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Clinical Reasons (clinical + reason)
Selected AbstractsLatest news and product developmentsPRESCRIBER, Issue 5 2008Article first published online: 3 APR 200 Newer antidepressants no better than placebo? A new meta-analysis suggests that newer antidepressants are no superior to placebo in most patients with depression , the exception being those with very severe depression, who can expect a small benefit. Writing in the online-only open access journal PLoS Medicine (5:e45.doi:10.1371/ journal.pmed.0050045), researchers from Hull and the US analysed published and unpublished trials submitted to the Food and Drug Administration in marketing applications for fluoxetine, paroxetine, venlafaxine (Efexor) and nefazodone (no longer available). Using the Hamilton Rating Scale for Depression (HRSD) score as an endpoint, meta-analysis of 35 trials involving 5133 patients and lasting six to eight weeks showed that mean HRSD score improved by 9.6 points with drug treatment and 7.8 with placebo. The authors say the difference of 1.8 was statistically significant but below the criterion for clinical significance (3.0) set by NICE in its clinical guideline on depression. A review of the study by the NHS Knowledge Service (www.nhs.uk) points out that it omits trials published after the drugs were licensed (1999) and those not sponsored by the pharmaceutical industry. It did not include any patients with severe depression and only one trial in patients with moderate depression. An earlier US study of data submitted to the FDA (N Eng J Med 2008;358:25260) showed that published trials of antidepressants were more likely to be positive (37/38) than unpublished ones (3/25). Further, FDA analysts concluded that 51 per cent of trials (published and unpublished) demonstrated positive findings compared with 94 per cent of those that were published. Audit reveals variations in hospital psoriasis care There are unacceptably large variations in the quality of care for patients with psoriasis in UK hospitals, a report by the British Association of Dermatologists and the Royal College of Physicians reveals. The audit of 100 hospital units found that 39 per cent restricted access to biological therapies because of cost, and over one-third of pharmacies could not supply ,specials' such as topical coal tar preparations. More positively, the units are adequately resourced to provide timely communication with GPs. RCGP responds to Public Accounts Committee The Royal College of General Practitioners has agreed with the Commons Public Accounts Committee that drug package labelling should include the cost of the medication. The suggestion was made by the Committee in its report Prescribing Costs in Primary Care. While recognising the importance of generic prescribing, the RCGP cautions against frequent medication switches because it may unsettle patients. ,Any changes must be carried out for sound clinical reasons with good communication between GPs and their patients,' it adds. Statins for patients with kidney disease? Statins reduce cardiovascular risk in people with chronic kidney disease, a new study suggests, but their effects on renal function remain unclear (BMJ 2008; published online doi: 10.1136/bmj. 39472.580984.AE). The meta-analysis of 50 trials involving a total of 30 144 patients found that statins reduced lipids and cardiovascular events regardless of the severity of kidney disease. However, all-cause mortality was unaffected and, although proteinuria improved slightly, there was no change in the rate of decline of glomerular filtration rate. An accompanying editorial (BMJ 2008; published online doi:10.1136/ bmj.39483.665139.80) suggests that the indications for statin therapy to reduce cardiovascular risk in patients with chronic kidney disease should be the same as for those with normal renal function. New NICE guidance New clinical guidelines from NICE (see New from NICE, pages 14,15) include the diagnosis and management of irritable bowel syndrome in adults in primary care, the care and management of osteoarthritis in adults, and the diagnosis and treatment of prostate cancer. In a public health guideline on smoking cessation services, NICE endorses the use of nicotine replacement patches for 12,17 year olds. Suspect additives in children's medicines The Food Commission (www.foodcomm.org.uk) has drawn attention to the presence in children's medicines of food additives it says are linked with hyperactivity. The Commission, a national nonprofit organisation campaigning for ,the right to safe, wholesome food', says that seven common additives (including tartrazine, sodium benzoate and Ponceau 4R) are associated with hyperactivity in susceptible children. Checking the SPCs, it found that 28 of 70 children's medicines , including formulations of paracetamol, ibuprofen, amoxicillin, erythromycin and codeine phosphate throat linctus , contain at least one suspect additive. Digoxin may increase mortality in AF patients An observational study has suggested that digoxin may increase deaths in patients with atrial fibrillation (Heart 2008;94:191,6). The study was a planned subgroup analysis of a trial evaluating anticoagulant therapy in 7329 patients with atrial fibrillation. Of these, 53 per cent were treated with digoxin. Mortality was significantly higher among digoxin users than nonusers (4.22 vs 2.66 per cent per year); myocardial infarction and other vascular deaths (but not stroke, systemic embolic episodes and major bleeding events) were significantly more frequent with digoxin. Poor communications cause readmission Elderly hospital patients are often discharged with inadequate information or arrangements for care, causing almost three-quarters to be readmitted within a week, say investigators from Nottingham (Qual Safety Health Care 2008;17:71,5). Retrospective review of records for 108 consecutive patients aged over 75 found that readmission was related to medication in 38 per cent and, of these, 61 per cent were considered avoidable. Almost two-thirds had no discharge letter or were readmitted before the letter was typed; two-thirds of discharge letters had incomplete documentation of medication changes. Copyright © 2008 Wiley Interface Ltd [source] Successful behavioral strategy to unite mother and infant rhesus monkeys (Macaca mulatta) after cesarean delivery ,AMERICAN JOURNAL OF PRIMATOLOGY, Issue 6 2009Angela M. Ruggiero Abstract Developmental studies of pre- to postnatal continuities in rhesus monkeys sometimes require infants be reared with their mothers. However, complications during pregnancy or experimental designs may require cesarean delivery. Owing to lack of published information on this subject, strategies are needed to introduce mothers to their infants following cesarean delivery. Using positive and negative reinforcement techniques we attempted to unite six infant rhesus macaques, Macaca mulatta, to their mothers following c-sections. For our seventh subject, we attempted to cross-foster an infant onto an unrelated female after she had undergone a cesarean surgery for a late-term spontaneous abortion. The mothers varied in age, parity, previous postnatal mothering experience with infants, housing earlier to delivery, and housing subsequent to introduction. Although there were large individual differences among the mother,infant pairs, all seven introductions were successful. The mothers learned to accept and care for their infants from the continuous application of operant conditioning techniques. These data suggest that mother-rearing following cesarean section is a realistic possibility whether required for clinical reasons or for proper experimental control. Furthermore, the ability to successfully mother-rear infants produced from cesarean delivery lessens the impact this potential confound of not being reared by their mothers exerts on many types of developmental studies. Am. J. Primatol. 71:510,522, 2009. © 2009 Wiley-Liss, Inc. [source] Candidate's Thesis: Direct Evidence of Bacterial Biofilms in Otitis Media,THE LARYNGOSCOPE, Issue 12 2001J. Christopher Post MD Abstract Objectives/Hypothesis Bacteriologic studies of otitis media with effusion (OME) using highly sensitive techniques of molecular biology such as the polymerase chain reaction have demonstrated that traditional culturing methods are inadequate to detect many viable bacteria present in OME. The presence of pathogens attached to the middle-ear mucosa as a bacterial biofilm, rather than as free-floating organisms in a middle-ear effusion, has previously been suggested to explain these observations. The suggestion has been speculative, however, because no visual evidence of such biofilms on middle-ear mucosa has heretofore been collected. The hypotheses motivating the current study were: 1) biofilms of nontypable Hemophilus influenzae will form on the middle-ear mucosa of chinchillas in an experimental model of OME, 2) these biofilms will exhibit changes in density or structure over time, and 3) biofilms are also present on tympanostomy tubes in children with refractory post-tympanostomy otorrhea. The objective of this study was to collect visual evidence of the formation of bacterial biofilms in these situations. Study Design Laboratory study of bacteriology in an animal model and on medical devices removed from pediatric patients. Methods Experimental otitis media was induced in chinchillas by transbullar injection of nontypable H. influenzae. Animals were killed in a time series and the surface of the middle-ear mucosa was examined by scanning electron microscopy (SEM) for the presence of bacterial biofilms. Adult and fetal chinchilla uninfected controls were similarly examined for comparison. In addition, tympanostomy tubes that had been placed in children's ears to treat OME and removed after onset of refractory otorrhea or other problems were examined by SEM and by confocal scanning laser microscopy for bacterial biofilms, and compared with unused control tubes. Results Bacterial biofilms were visually detected by SEM on the middle-ear mucosa of multiple chinchillas in which H. influenzae otitis media had been induced. Qualitative evaluation indicated that the density and thickness of the biofilm might increase until at least 96 hours after injection. The appearance of the middle-ear mucosa of experimental animals contrasted with that of uninjected control animals. Robust bacterial biofilms were also visually detected on tympanostomy tubes removed from children's ears for clinical reasons, in contrast with unused control tubes. Conclusions Bacterial biofilms form on the middle-ear mucosa of chinchillas in experimentally induced H. influenzae otitis media and can form on tympanostomy tubes placed in children's ears. Such biofilms can be directly observed by microscopy. These results reinforce the hypothesis that the bacterial aggregates called biofilms, resistant to treatment by antibiotics and to detection by standard culture techniques, may play a major etiologic role in OME and in one of its frequent complications, post-tympanostomy otorrhea. [source] Rest Premature Ventricular Contractions on Routine ECG and Prognosis in Heart Failure PatientsANNALS OF NONINVASIVE ELECTROCARDIOLOGY, Issue 1 2010Vy-Van Le M.D. Background: Premature ventricular contractions (PVC) at rest are frequently seen in heart failure (HF) patients but conflicting data exist regarding their importance for cardiovascular (CV) mortality. This study aims to evaluate the prognostic value of rest PVCs on an electrocardiogram (ECG) in patients with a history of clinical HF. Methods and Results: We considered 352 patients (64 ± 11 years; 7 females) with a history of clinical HF undergoing treadmill testing for clinical reasons at the Veterans Affairs Palo Alto Health Care System (VAPAHCS) (1987,2007). Patients with rest PVCs were defined as having ,1 PVC on the ECG prior to testing (n = 29; 8%). During a median follow-up period of 6.2 years, there were 178 deaths of which 76 (42.6%) were due to CV causes. At baseline, compared to patients without rest PVCs, those with rest PVCs had a lower ejection fraction (EF) (30% vs 45%) and the prevalence of EF , 35% was higher (75% vs 41%). They were more likely to have smoked (76% vs 55%). The all-cause and CV mortality rates were significantly higher in the rest PVCs group (72% vs 49%, P = 0.01 and 45% vs 20%, P = 0.002; respectively). After adjusting for age, beta-blocker use, rest ECG findings, resting heart rate (HR), EF, maximal systolic blood pressure, peak HR, and exercise capacity, rest PVC was associated with a 5.5-fold increased risk of CV mortality (P = 0.004). Considering the presence of PVCs during exercise and/or recovery did not affect our results. Conclusion: The presence of PVC on an ECG is a powerful predictor of CV mortality even after adjusting for confounding factors. Ann Noninvasive Electrocardiol 2010;15(1):56,62 [source] | ||||||||||