Elective Caesarean Section (elective + caesarean_section)

Distribution by Scientific Domains
Distribution within Medical Sciences


Selected Abstracts


Elective caesarean section increases the risk of respiratory morbidity of the newborn

ACTA PAEDIATRICA, Issue 1 2009
Line Borgwardt
No abstract is available for this article. [source]


Increased rate of prematurity associated with antenatal antiretroviral therapy in a German/Austrian cohort of HIV-1-infected women

HIV MEDICINE, Issue 1 2008
I Grosch-Woerner
Objective The aim of the study was to assess the risk of adverse pregnancy outcomes after antenatal antiretroviral therapy in a well-defined prospective cohort of nontransmitting HIV-infected women. Methods Prospective monitoring of 183 mother,child pairs from 13 centres in Germany and Austria, delivering between 1995 and 2001, was carried out. Following German,Austrian guidelines recommending an elective Caesarean section (CS) at 36 weeks, prematurity was defined as <36 weeks' gestation for these analyses. Results Of 183 mother,child pairs, 42% were exposed to antenatal monotherapy and 17% to dual therapy. Of the 75 women exposed to highly active antiretroviral therapy (HAART), 21 (28%) received protease inhibitor (PI)-based HAART and the remaining 54 received nonnucleoside reverse transcriptase inhibitor-based HAART. In multivariable analysis (176 pregnancies), PI-based HAART exposure during pregnancy was associated with an increased risk of premature delivery [adjusted odds ratio 3.40; 95% confidence interval (CI) 1.13,10.2; P=0.029, compared with monotherapy]. Congenital abnormalities affected 3.3% infants. Perinatally, 18.9% of children (34 of 179) had respiratory problems requiring interventions, which were associated with prematurity but not with type of treatment exposure. From adjusted regression analysis, the mean birth weight z -score for children exposed to HAART with PI (+0.46; 95% CI 0.01,0.92; P=0.047) or dual therapy (+0.43; 95% CI 0.03,0.82; P=0.034) was slightly but significantly higher than that for those exposed to monotherapy; head circumference was appropriate for gestational age and there were no significant differences between treatment groups. Conclusions Use of antenatal PI-based HAART initiated before or during pregnancy was associated with a significantly increased risk of premature delivery at <36 weeks' gestation. The overall crude prematurity rate was 34% (63 of 183; 95% CI 28,42). [source]


National review of maternity care for women with HIV infection

HIV MEDICINE, Issue 5 2006
C McDonald
Objective To assess adherence to the British HIV Association (BHIVA) 2001 guidelines for the management of HIV-infected pregnant women. Methods A survey and a case note review were carried out using structured questionnaires sent to providers of adult HIV care in the UK and Ireland. Participants were women with HIV infection who delivered a live or stillborn infant between October 2002 and September 2003. The main outcome measures were the appropriate use of antiretroviral therapy, the use and timing of elective Caesarean section, and support for the avoidance of breast-feeding. Results Of 186 centres, 100 (54%) responded with data on 501 eligible pregnancies. Conclusions In general, practice was in accordance with the BHIVA 2001 guidelines. However, in a number of cases Caesarean sections were planned later than the recommended 38 weeks. [source]


Warming of patients during Caesarean section: a telephone survey,

ANAESTHESIA, Issue 1 2009
M. J. Woolnough
Summary We contacted the duty obstetric anaesthetist in 219 of the 220 consultant-led maternity units in the UK (99.5%) and asked about departmental and individual practice regarding temperature management during Caesarean section. Warming during elective Caesarean section was routine in 35 units (16%). Intravenous fluid warmers were available in 213 units (97%), forced air warmers were available in 211 (96%) and warming mattresses were available in 42 (19%). Only 18 (8%) departments had specific guidelines for temperature management during Caesarean section. Personal intra-operative practice was variable, although all of those contacted would initiate some form of active temperature management after a mean (SD) volume of blood loss of 1282 (404) ml, length of surgery of 78 (24) min, or core body temperature (if measured) of median (IQR [range]), 36 (35.5,36 [34,37.2]) °C. [source]


Variation in rapid sequence induction techniques: current practice in Wales

ANAESTHESIA, Issue 1 2009
J. P. Koerber
Summary A questionnaire survey examining rapid sequence induction techniques was sent to all anaesthetists in Wales. The questionnaire presented five common clinical scenarios: emergency appendicectomy; elective knee arthroscopy with a symptomatic hiatus hernia; elective knee arthroscopy with an asymptomatic hiatus hernia; elective Caesarean section; and emergency laparotomy for bowel obstruction. Completed surveys were received from 421 anaesthetists, a 68% response rate. Rapid sequence induction was chosen by 398/400 respondents (100%) for bowel obstruction, 392/399 (98%) for Caesarean section, 388/408 (95%) for appendicectomy, 328/395 (83%) for symptomatic hiatus hernia but only 98/399 (25%) for asymptomatic hiatus hernia (p < 0.001). Trainees were more likely to use a rapid sequence induction technique than consultants and staff grades for the appendicectomy (p = 0.025), symptomatic hiatus hernia (p = 0.004) and asymptomatic hiatus hernia (p = 0.001) scenarios and were also more likely to use a thiopental,suxamethonium combination for rapid sequence induction (p < 0.001). [source]


Caesarean section in a complicated case of central core disease

ANAESTHESIA, Issue 5 2008
R. N. Foster
Summary We describe the anaesthetic management of a 21-year-old lady with central core disease for elective Caesarean section. Central core disease is characterised by muscle weakness, skeletal deformities and susceptibility to malignant hyperthermia. Total intravenous anaesthesia was used because of the combination of potential malignant hyperthermia, severe kyphoscoliosis and extensive spinal scarring. The authors believe there is no previous report of propofol and remifentanil being used in these circumstances. A short review of central core disease and its anaesthetic implications is provided. [source]


Anaesthetic considerations in a parturient with varicella presenting for Caesarean section

ANAESTHESIA, Issue 11 2003
N. W. Brown
Summary A parturient with varicella (chickenpox) presented for an elective Caesarean section and spinal anaesthesia was employed for surgery. A review of the literature is presented and the anaesthetic issues are discussed. [source]


Oxygen administration for elective Caesarean section under spinal anaesthesia

ANAESTHESIA, Issue 12 2002
Article first published online: 18 NOV 200
No abstract is available for this article. [source]


Prevention and management of hypotension during spinal anaesthesia for elective Caesarean section: a survey of practice

ANAESTHESIA, Issue 8 2001
S. M. Burns
Hypotension during obstetric spinal anaesthesia has traditionally been managed by such measures as fluid preloading, positioning of the patient and the use of vasoconstrictors. However, studies and reports have regularly appeared in the literature disputing the value of conventional management, in particular, the fluid preload. With this in mind, we surveyed UK consultant obstetric anaesthetists to determine current practice in this area. Of the 558 respondents, 486 (87.1%) stated that they routinely give a fluid preload. The fluid chosen by 405 (83.3%) of the preloaders was Hartmann's solution and the usual volume, chosen by 194 (39.9%), was 1000 ml. A simple left lateral position was preferred by 221 respondents (39.6%) overall and in the treatment of hypotension, ephedrine was the sole vasoconstrictor selected by 531 (95.2%). Heavy bupivacaine 0.5% was the local anaesthetic chosen by 545 (97.7%) and 407 (72.9%) respondents indicated the use of additional spinal drugs. [source]


Twin pregnancy outcomes for women with gestational diabetes mellitus compared with glucose tolerant women

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 1 2003
Robert G. Moses
Abstract Objective: To examine pregnancy outcomes for women with gestational diabetes mellitus (GDM) and a twin pregnancy compared with glucose tolerant women with a twin pregnancy. Design: Comparison of selected pregnancy outcomes. Setting: Wollongong, New South Wales, Australia. Population: Women with GDM seen over a 10-year period by an endocrinologist, and women from a selected year of an obstetric database including Wollongong and Shellharbour Hospitals. Methods: Examination of pregnancy outcome data from the two sources. Main outcome measures: Fetal birthweights and method of delivery. Results: There were 28 GDM women with a twin pregnancy from 1229 consecutive referrals (2.3%) of women with GDM for medical management. For comparison there were 29 glucose tolerant women with twin pregnancies evaluable who had delivered over a 1-year period. For the women with GDM and a twin pregnancy there were no significant differences in demographics or outcomes except for a higher rate of elective Caesarean section. Conclusion: The higher rate of Caesarean section appeared to be related to the combination of a twin pregnancy and GDM rather than the twin pregnancy or the GDM independently. [source]


Maternal plasma level of antimicrobial peptide LL37 is a major determinant factor of neonatal plasma LL37 level

ACTA PAEDIATRICA, Issue 6 2010
A Mandic Havelka
Abstract Aim:, To determine cathelicidin antimicrobial peptide LL37subcellular distribution in cord neutrophils and normal plasma LL37 levels in mothers and neonates, relate them to delivery mode and relevant biochemical markers, including 25-OHvitamin D [25(OH)D] as this molecules increases cathelicidin gene expression. Methods:, A total of 115 infants were included, n = 68 with normal delivery and n = 47 with elective Caesarean section (C-section), a subset of these being 50 mother,infant pairs. Biomarkers were determined in maternal and cord blood. Subcellular peptide LL37 distribution was analysed with immunoelectron microscopy. Results:, Cord plasma LL37 levels were three-times higher after normal delivery compared with C-section. A highly significant correlation was observed between maternal and cord plasma LL37 levels, regardless of delivery mode. No relationship was found between LL37 and 25(OH)D levels. Neutrophils from cord blood after normal delivery contained 10-times more cytoplasmatic cathelicidin peptide compared with corresponding cells after C-section where a strict granular localization was found. Conclusion:, These data are consistent with a placental transfer of LL37 and identifies maternal stores as the critical factor determining neonatal plasma LL37 level. An additional enhancement of neonatal cathelicidin mobilization and release is connected to normal delivery stress. [source]


Is attendance of a paediatrician at elective Caesarean sections routinely indicated?

JOURNAL OF PAEDIATRICS AND CHILD HEALTH, Issue 6 2006
David I Tudehope Professor
No abstract is available for this article. [source]


Identification and management of women with inherited bleeding disorders: a survey of obstetricians and gynaecologists in the United Kingdom

HAEMOPHILIA, Issue 4 2006
C. CHI
Summary., A mail survey of members and fellows of Royal College of Obstetricians and Gynaecologists was carried out to determine current practices of obstetricians and gynaecologists in the United Kingdom in the management of women with inherited bleeding disorders. In total, 3929 questionnaires were sent, 707 returned and analysis was limited to 545 valid questionnaires. In the past 5 years, 91% have managed women with inherited bleeding disorders. The majority (83%) considered inherited bleeding disorders to be under diagnosed in obstetrics and gynaecology. More than 80% considered the prevalence of von Willebrand's disease (VWD) to be <0.2% in the general population and <1% in women with menorrhagia and no gynaecological pathology, although the reported prevalence is 1% and 5,25% respectively. Twelve percent of the respondents would arrange testing for VWD when reviewing an 18-year-old with menorrhagia and no pelvic pathology, while only 2% would do the same for a 35-year-old with the same presentation. Twenty-one percent thought elective caesarean section is indicated in all fetuses known to be at risk of being affected by haemophilia. Eighty-four percent considered vacuum extraction unsafe in these cases, but 76% would consider the use of low forceps. In conclusion, obstetricians and gynaecologists underestimate inherited bleeding disorders as an underlying cause for menorrhagia. Increased awareness and management guidelines are essential in minimizing haemorrhagic complications and improving quality of care of these women. [source]


Prediction of post-operative pain by an electrical pain stimulus

ACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 5 2007
P. R. Nielsen
Background:, Treatment of post-operative pain is still a significant problem. Recently, interest has focused on pre-operative identification of patients who may experience severe post-operative pain in order to offer a more aggressive analgesic treatment. The nociceptive stimulation methods have included heat injury and pressure algometry. A simple method, Pain Matcher® (PM), using electrical stimulation, is validated for pain assessment, but has not been evaluated as a tool for prediction of post-operative pain. Our aim was to assess the predictive value of pre-caesarean section pain threshold on intensity of post-caesarean section pain using the PM. Patients and methods:, Thirty-nine healthy women scheduled for elective caesarean section were studied. The anaesthetic/analgesic procedures included spinal anaesthesia, paracetamol, diclofenac, controlled-release (CR) oxycodone and morphine on request. Pre-operatively, the sensory and pain thresholds were measured using the PM. Post-operatively, a midwife, blinded for pre-caesarean pain threshold assessments, assessed the pain at rest and during mobilization every 12 h for 2 days. Consumption of analgesics was also recorded. Results:, Pre-operative pain threshold correlated significantly with post-caesarean pain score (VAS) at rest and mobilization: [Spearman's rho =,0.65 (,0.30 to ,0.75), P < 0.01] and [Spearman's rho =,0.52 (,0.23 to ,0.72), P < 0.01], respectively. There was no significant correlation between pre-operative PM assessment of sensory threshold and post-operative pain. Conclusion:, Electrical pain threshold before caesarean section seems to predict the intensity of post-operative pain. This method may be used as a screening tool to identify patients at high risk of post-operative pain. [source]


Effect of delayed supine positioning after induction of spinal anaesthesia for caesarean section

ACTA ANAESTHESIOLOGICA SCANDINAVICA, Issue 4 2002
F. Køhler
Background: The study tested the hypothesis that the incidence of hypotension during spinal anaesthesia for caesarean section is less in parturients who remain in the sitting position for 3 min compared with parturients who are placed in the modified supine position immediately after induction of spinal anesthesia. Methods: Spinal anaesthesia was induced with the woman in the sitting position using 2.8 ml hyperbaric bupivacaine 0.5% at the L3,4 or L2,3 interspace. Ninety-eight patients scheduled for elective caesarean section under spinal anaesthesia were randomised to assume the supine position on an operating table tilted 10° to the left (modified supine position) immediately after spinal injection (group 0, n=52) or to remain in the sitting position for 3 min before they also assumed the modified supine position (group 3, n=46). Isotonic saline 2,300 ml was given intravenously over 15 min before spinal injection followed by 15 ml/kg over 15,20 min after induction of spinal anaesthesia. If the systolic blood pressure decreased to less than 70% of baseline or to less than 100 mmHg or if there was any complaint of nausea, ephedrine was given in 5 mg boluses intravenously every 2 min. Results: The blood pressure decreased significantly in both groups following spinal injection (P<0.001). Blood pressure variations over time differed significantly between the two groups (P<0.05). However, the incidence of maternal hypotension before delivery was similar in the two groups. The difference was caused by the time to the blood pressure nadir being significantly shorter in group 0 compared with group 3 (9.1±4.5 min vs. 11.7±3.7 min, P<0.01). Similar numbers of patients received rescue with ephedrine before delivery: 35 (67%) in group 0 vs. 26 (57%) in group 3 (NS). The mean total dose of ephedrine before delivery was 10.9 mg in group 0 vs. 9.2 mg in group 3 (NS). There were no differences in neonatal outcome between the two groups. Conclusion: At elective caesarean section, a 3-min delay before supine positioning does not influence the incidence of maternal hypotension after induction of spinal anaesthesia in the sitting position with 2.8 ml of bupivacaine 0.5% with 8% dextrose. [source]


Congenital diaphragmatic hernia: prenatal diagnosis permits immediate intensive care with high survival rate in isolated cases.

PRENATAL DIAGNOSIS, Issue 7 2004
A population-based study
Abstract Objectives To estimate the prognosis of prenatally diagnosed isolated congenital diaphragmatic hernia (PDICDH) treated with ,immediate planned care' (IPC) between 1999 and 2003 in Eastern Brittany. Methods The prognosis of PDICDH was compared with the prognosis of the other live-born CDH, either prenatally undiagnosed or not having had IPC. IPC consisted in prenatal lung maturation with corticosteroids, elective caesarean section at 37 weeks, immediate intubation, surfactant, high- frequency ventilation or oscillation, nitric oxide, intravenous prostacyclin, anaesthesia and haemodynamic support. Surgical repair was performed in the NICU 34 h after birth. Results The incidence of CDH was 0.8, with a prenatal diagnosis rate of 27/30 (90%), leading to a termination of pregnancy in nine cases. Ten CDH were associated with other malformations. IPC in PDICDH was performed in 12 cases. The survival rate of PDICDH with IPC was 11/12 versus 1/9 in CDH with no IPC or no prenatal diagnosis (p < 0.01). Logistic regression analysis showed that IPC was determinant for survival (p < 0.01). Conclusion Prenatal diagnosis of isolated CDH treated with immediate planned care is associated with a high survival rate. This suggests that prenatal diagnosis associated with specifically adapted postnatal procedure may improve the prognosis of isolated CDH. Copyright © 2004 John Wiley & Sons, Ltd. [source]


ORIGINAL ARTICLE: Urocortin Increases IL-4 and IL-10 Secretion and Reverses LPS-induced TNF-, Release from Human Trophoblast Primary Cells

AMERICAN JOURNAL OF REPRODUCTIVE IMMUNOLOGY, Issue 4 2009
Michela Torricelli
Problem, As urocortin (Ucn) is a placental peptide belonging to the corticotrophin-releasing hormone (CRH) family that modulates immune function in other biological models, this study evaluated Ucn effects on cytokines secretion from cultured human trophoblast cells. Method of study, Placentas were collected from normal term pregnancies after elective caesarean section, and primary trophoblast culture was prepared followed by the treatment of Ucn and/or CRH selective antagonists, antalarmin and astressin 2b. The anti-inflammatory cytokines IL-4 and IL-10 and the pro-inflammatory cytokine TNF-, were measured by ELISA. Results, Urocortin treatment induced a significant and dose-dependent increase of IL-4 and IL-10, whereas it did not affect TNF-, secretion. When incubated in the presence of LPS, Ucn reversed LPS-induced TNF-, release from cultured trophoblast cells, an effect that was blocked by the CRH-R2 selective antagonist, astressin 2b. Conclusion, Urocortin stimulates IL-4 and IL-10 secretion and reverses LPS-induced TNF-, release from trophoblast cells through action on CRH-R2 receptors, suggesting that this peptide may play a possible role as an anti-inflammatory agent. [source]


Fasting periods and dehydration before elective caesarean section

ANAESTHESIA, Issue 1 2010
M. Mackenzie
No abstract is available for this article. [source]


Closed-loop feedback computer-controlled infusion of phenylephrine for maintaining blood pressure during spinal anaesthesia for caesarean section: a preliminary descriptive study,

ANAESTHESIA, Issue 12 2007
W. D. Ngan Kee
Summary We describe the novel use of a closed-loop feedback computer-controlled infusion of phenylephrine for maintaining blood pressure in 53 patients having spinal anaesthesia for elective caesarean section. A simple on,off algorithm was used that activated an intravenous phenylephrine infusion at 100 ,g.min,1 when systolic blood pressure was less than or equal to baseline and stopped the infusion when systolic blood pressure exceeded baseline. Up to uterine incision, 94.6% of all systolic blood pressure measurements were within the range (baseline ± 20%). Seven patients (13.2%) had one or more episodes of hypotension (systolic blood pressure < 80% of baseline) and 23 patients (37.7%) had one or more episodes of hypertension (systolic blood pressure >,120% of baseline). No patient had nausea or vomiting and in no case was umbilical arterial blood pH < 7.2. Calculated system performance parameters were comparable with those of previously published closed-loop systems and provide a reference for the potential development and comparison of more advanced algorithms. [source]


POST CAESAREAN VESICOUTERINE FISTULAE , YOUSSEF SYNDROME: OUR EXPERIENCE AND REVIEW OF PUBLISHED WORK

ANZ JOURNAL OF SURGERY, Issue 4 2006
M. Prasad Rao
Objective: To analyse the incidence, symptomatology, diagnosis and therapeutic aspects of Youssef syndrome (post caesarean vesicouterine fistula), and to review relevant published work. Methods: A retrospective study from the urosurgical unit of a tertiary care referral hospital was carried out. In a retrospective analysis of urogenital fistulae over 10 years, we identified 14 patients with uterovesical fistulae, resulting from caesarean section. All the patients were evaluated by history, physical examination, radiological tests and cystoscopy. All patients underwent transperitoneal repair of these fistulae with omental interposition. Results of surgery were evaluated by absence of cyclic haematuria, stoppage of urinary incontinence, and achievement of fertility. Results: A total of 12 patients who had minimum follow up was included in the present study. The results showed that 50% of the fistulae resulted from emergency caesarean operation with 58% of patients presenting after their second caesarean section. The mean age of the patients was 19 years (range 15,29) and mean duration of symptoms was 7 months (range 3,16). Menouria and amenorrhoea were predominant presenting symptoms. The results of surgical treatment were excellent with good continence and resolution of the cyclic haematuria. Three pregnancies (37.5%) which resulted in elective caesarean section were recorded. Conclusion: Vesicouterine fistulae, despite being infrequent, are no longer a rare diagnosis and are most commonly secondary to lower segment caesarean section. With patient history and selected investigations diagnosis is relatively easy. The surgical repair of these fistulae is standard treatment, especially with delayed fistulae with achievement of total continence, and complete resolution of cyclic haematuria. Meticulous practice of obstetric and surgical principles during caesarean section can prevent the formation of these fistulae. [source]


An Australian and New Zealand survey of practice of the use of oxytocin at elective caesarean section

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 1 2010
Joanne C. MOCKLER
Background:, The use of oxytocin to prevent postpartum haemorrhage at elective caesarean section is largely based on evidence derived from vaginal births. Overseas studies indicate wide variation in practice with regard to specific doses of oxytocin administered at caesarean section. No such surveys have been undertaken in Australia or New Zealand. Aims:, To survey and report Australian and New Zealand practice regarding oxytocin administration at elective caesarean section. Methods:, A structured questionnaire was posted to Fellows of the Royal Australian and New Zealand College of Obstetricians and Gynaecologists resident in Australia and New Zealand. Results:, One thousand five hundred and forty-seven questionnaires were distributed, of which 890 (58%) were returned. Of these, 700 Fellows, 600 from Australia and 100 from New Zealand, currently practiced obstetrics. Almost all Fellows, 686 (98%), reported that they administered an oxytocin bolus at elective caesarean section, most commonly 10 IU (n = 460) or 5 IU (n = 220). The choice of bolus dose was related to country, duration and type (private or public) of practice. A majority of Fellows, 683 (98%), used an additional oxytocin infusion, either routinely or selectively. A total of 68 different regimens were reported. The single most common regimen was 40 IU oxytocin in 1000 mL administered over four hours, used by 255 Fellows (37%). Conclusions:, There are wide variations in the usage of oxytocin at elective caesarean section in Australia and New Zealand, most likely due to a lack of high level evidence to guide practice. Appropriately designed clinical trials are needed to provide evidence to support future practice. [source]


Use of additional oxytocin to reduce blood loss at elective caesarean section: A randomised control trial

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 1 2010
Kemal GÜNGÖRDÜK
Objective:, The purpose of this prospective, randomised, double-blind, placebo-controlled study was to assess the effects of a 5-IU oxytocin bolus and placebo infusion versus a 5-IU oxytocin bolus and 30 IU infusion on the control of blood loss at elective lower segment caesarean section (C/S). Methods:, Participants with indication for elective C/S were randomly allocated to two groups. Group A, 360 women, received oxytocin 5 IU bolus and placebo; group B, 360 women received oxytocin 5 IU bolus and 30 IU infusion. Blood loss was estimated based on the haematocrit values before and 48 h after delivery. The primary outcome was the incidence of excessive bleeding (estimated blood loss of >1000 mL), while secondary outcomes included use of additional uterotonics, estimated blood loss, need for blood transfusion, duration of hospital stay and the incidence of adverse effects. Results:, No demographic difference was observed between groups. Mean estimated blood loss (P < 0.001) and the proportion of women with blood loss estimated to be greater than 1000 mL were significantly less for group B than for group A (relative risk (RR) 0.35, 95% confidence interval (CI) 0.20,0.63). In addition, more women in the group A required additional uterotonic agents (RR 0.35, 95% CI 0.22,0.56) and blood transfusion (RR 0.12, 95% CI 0.01,0.98). Conclusion:, An additional oxytocin infusion after 5 IU oxytocin bolus infusion at elective C/S may reduce blood loss and required blood transfusion. [source]


Women's expectations of management in their next pregnancy after an unexplained stillbirth: An Internet-based empirical study

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 6 2009
Stephen J. ROBSON
Background:, Unexplained stillbirth is the largest contributor to perinatal death, accounting for one-third of stillbirths. There appears to be no increase in perinatal death rates in the pregnancies that follow an unexplained stillbirth. However, these pregnancies have increased rates of induced labour and elective caesarean section, as well as preterm birth, low birthweight, instrumental delivery, ,fetal distress' and postpartum haemorrhage. Aim:, To study the wishes for future pregnancy management in women who have suffered an unexplained stillbirth. Methods: An Internet-based survey of women after an unexplained stillbirth, seeking demographic information and reproductive history, details of management of the index stillbirth and information about their wishes for subsequent pregnancy management (antenatal surveillance, early delivery and caesarean delivery). Results:, Of the total respondents included in the study, 93% wanted ,testing' over and above normal pregnancy care in their next pregnancy. Of the respondents, 81% wanted early delivery and 26% wanted a Caesarean delivery, irrespective of obstetric indications. These wishes were not influenced by socio-demographic factors, management of the index stillbirth (with the exception of having had a Caesarean delivery) or advice received on management of the next pregnancy (with the exception of being advised to have an early or Caesarean delivery). Conclusions:, The women surveyed wanted increased fetal surveillance and early delivery, but not necessarily elective caesarean section. [source]


Maternal height and length of gestation: Does this impact on preterm labour in Asian women?

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 4 2009
Ben Chong-Pun CHAN
Background: Both maternal height and ethnicity may influence the gestation length, but their independent effect is unclear. Aim: This study was performed to examine the relationship between maternal height and gestational length in women with singleton pregnancies in a Chinese and southeast Asian population. Methods: A retrospective cohort study was performed on women carrying singleton pregnancies with spontaneous labour in a 48-month period managed under our department to determine the relationship between maternal height, expressed in quartiles, with the mean gestational age and incidence of preterm labour. Results: Of the 16 384 women who delivered within this period, the 25th, 50th and 75th percentile values of maternal height were 153 cm, 156 cm and 160 cm respectively. Excluded from analysis were 6597 women because of multifetal pregnancy, teenage pregnancy (maternal age , 19 years old), induction of labour or elective caesarean section, or incomplete data due to no antenatal booking in our hospital. Significant differences were found in the maternal weight and body mass index, incidences of multiparity and smokers, gestational age and birthweight among the four quartiles. There was significantly increased incidence of preterm birth between 32 and 37 weeks gestation in women with shorter stature. Conclusions: In our population, maternal height has an influence on gestational length, and the lower three quartiles was associated with increased odds of labour at > 32 to < 37 weeks. This effect should be taken into consideration in the adoption of international recommendations in obstetric management and intervention. [source]


Is routine cervical dilatation necessary during elective caesarean section?

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 3 2009
A randomised controlled trial
Objective: The purpose of this prospective randomised study was to determine the effect of routine cervical dilatation during elective caesarean section on maternal morbidity. Methods: Participants with indication for elective caesarean section were randomly allocated to two groups. Group A (n = 200) women with intraoperative cervical dilatation; group B (n = 200) women with no intraoperative cervical dilatation. Results: No demographic differences were observed between groups. There was no significant difference between groups in infectious morbidity (P = 0.87) (relative risk (RR) 1.11, 95% confidence interval (CI) 0.58,2.11), endometritis (P = 0.72) (RR 1.68, 95% CI 0.39,7.14), febrile morbidity (P = 0.66) (RR 1.21, 95% CI 0.51,2.87), wound infection (P = 0.82) (RR 1.11, 95% CI 0.44,2.81), endometritis (P = 0.72) (RR 1.68, 95% CI 0.39,7.14) or urinary tract infection (P = 1.00) (RR 1.00, 95% CI 0.28,3.50), and estimated blood loss (P = 0.2). However, group A had longer operative times compared with the group B (P = 0.01). Conclusion: Intraoperative digital cervical dilatation during elective caesarean section did not reduce blood loss and postoperative infectious morbidity. The routine digital cervical dilatation during elective caesarean section is not recommended. [source]


Transplacental haemorrhage may explain the intrapartum transmission of HIV.

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 6 2008
A pilot study uses flow cytometry to quantify maternal red blood cells in infants born vaginally or by caesarean section
Intrapartum transmission is epidemiologically important for some viruses such as HIV and hepatitis B virus, but its precise mechanism is unknown. We hypothesised that the ability of elective caesarean section to prevent HIV may be due to prevention of transplacental microtransfusions of blood during labour. Their frequency is not known so we performed a pilot study which showed evidence of transplacental transfusion from mother to fetus in one of ten mother,infant pairs delivering vaginally and none of ten delivering by elective caesarean section. We conclude that transplacental transfusion occurs and is one possible mechanism for the intrapartum transmission of viruses from mother to baby. [source]


The burden of caesarean section refusal in a developing country setting

BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 10 2007
CO Chigbu
Objective, To investigate the prevalence, aetiology and outcomes of caesarean section refusal in pregnant women. Design, A prospective controlled study. Setting, University of Nigeria Teaching Hospital and Aghaeze Hospital, Enugu, Nigeria. Population, A total of 62 Nigerian women who declined elective caesarean section. Method, Interviewer-administered questionnaires at the time of caesarean section refusal and postdelivery. The delivery outcomes of the subjects were compared with that of a matched control group of women who accepted caesarean section. Main outcome measures, Prevalence, maternal reasons for caesarean section refusal and the resultant maternal and perinatal mortality. Results, The prevalence of caesarean section refusal was 11.6% of all caesarean deliveries. Maternal reasons for refusing caesarean section include fear of death, economic reasons, desire to experience vaginal delivery and inadequate counselling. Outcomes were significantly worse among women who refused elective caesarean section than in the controls with a maternal mortality of 15% (versus 2%, P = 0.008) and a perinatal mortality of 34% (versus 5%, P < 0.001). Conclusion, There is a high prevalence of caesarean section refusal in south-eastern Nigeria. Women declining caesareans have very poor maternal and perinatal outcomes and need extra support. [source]


Trends in mode of delivery during 1984,2003: can they be explained by pregnancy and delivery complications?

BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 7 2007
CM O'Leary
Objectives, To describe trends in mode of delivery, to identify significant factors which affected mode of delivery, and to describe how these factors and their impact have changed over time. Design, Total population birth cohort. Setting, Western Australia 1984,2003. Participants, The analysis was restricted to all singleton infants delivered at 37,42 weeks of gestation with a cephalic presentation (n= 432 327). Methods, Logistic regression analyses were undertaken to estimate significant independent risk factors separately for elective and emergency caesarean sections compared with vaginal delivery (spontaneous and instrumental), adjusting for potential confounding variables. Main outcome measures, Trends in mode of delivery, demographic factors, and pregnancy and delivery complications. Estimated likelihood of elective caesarean section compared with vaginal delivery and emergency caesarean section compared with vaginal delivery. Results, Between 1984,88 and 1999,2003, the likelihood of women having an elective caesarean section increased by a factor of 2.35 times (95% CI 2.28,2.42) and the likelihood of an emergency caesarean section increased 1.89 times (95% CI 1.83,1.96). These caesarean section rate increases remained even after adjustment for their strong associations with many sociodemographic factors, obstetric risk factors, and obstetric complications. Rates of caesarean section were higher in older mothers, especially those older than 40 years of age (elective caesarean section, OR 5.42 [95% CI 4.88,6.01]; emergency caesarean section, OR 2.67 [95% CI 2.39,2.97]), and in nulliparous women (elective caesarean section, OR 1.54 [95% CI 1.47,1.61]; emergency caesarean section, OR 3.61 [95% CI 3.47,3.76]). Conclusions, Our data show significant changes in mode of delivery in Western Australia from 1984,2003, with an increasing trend in both elective and emergency caesarean section rates that do not appear to be explained by increased risk or indication. [source]


Poor uterine contractility in obese women

BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 3 2007
J Zhang
Objective, The aim of the study was to elucidate the reason for the high rate of caesarean section in obese women. We examined the following hypotheses: (1) obese women have a high incidence of complications related to poor uterine contractility,caesarean section for dysfunctional labour and postpartum haemorrhage. 2) The myometrium from obese women has less ability to contract in vitro. Design, First, a clinical retrospective analysis of data from 3913 completed singleton pregnancies was performed. Secondly, in a prospective study the force, frequency and intracellular [Ca2+] flux of spontaneously contracting myometrium were related to the maternal body mass index. Setting, Liverpool Women's Hospital and University of Liverpool. Population, The clinical study involved all women who delivered in one hospital in 2002. The in vitro study myometrial biopsies were obtained from 73 women who had elective caesarean section at term. Results, Maternal obesity carried significant risk of caesarean section in labour that was highest for delay in the first stage of labour (OR 3.54). The increased risk of caesarean section in obese women largely occurred in women with normal- and not with high-birthweight infants. Obese women delivering vaginally had increased risk of prolonged first stage of labour and excessive blood loss. Myometrium from obese women contracted with less force and frequency and had less [Ca2+] flux than that from normal-weight women. Conclusions, We suggest that these findings indicate that obesity may impair the ability of the uterus to contract in labour. [source]


Investigating the relationship between affluence and elective caesarean sections

BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 7 2005
Bernadette Alves
The proportion of women delivering by caesarean section has increased dramatically in England and many westernised countries. It has been suggested that one important reason for this increase is the growing proportion of women opting for elective caesareans for lifestyle reasons, a trend that is, it is argued, most common among the affluent. We investigated the hypothesis that affluent women are more likely to deliver by elective caesarean section. Logistic regression modelling was used to analyse data from half a million women who delivered in English NHS hospitals between 1996 and 2000. We found that women living in the most affluent areas of England were significantly more likely to have an elective caesarean section than their deprived counterparts. [source]