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Perfusion Catheter (perfusion + catheter)

Distribution by Scientific Domains
Medical Sciences100%

Selected Abstracts

Clinical Experience with a Novel Intracoronary Perfusion Catheter to Treat No-Reflow Phenomenon in Acute Coronary Syndromes

JOURNAL OF INTERVENTIONAL CARDIOLOGY, Issue 2 2010
GABRIEL MALUENDA M.D.
Background:,The no-reflow phenomenon is an often seen complication in patients presenting with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI). This event is associated with poor prognosis and poses a therapeutic challenge. Methods:,This retrospective study cohort was composed of 30 patients who presented with ACS between September 2007 and April 2009, and developed no-reflow during subsequent PCI. The primary end-point was defined as normal Thrombolysis In Myocardial Infarction (TIMI) 3 flow with myocardial blush grade (MBG) ,2 or an increase in TIMI flow by ,2 grades with a MBG ,2 after intracoronary drug infusion via the ClearWay (CW) RX perfusion catheter. Results:,The population presented with a relatively high prevalence of cardiovascular risk factors. ST-elevation myocardial infarction was the most common presentation (60.0%), while 20% of the patients presented with cardiogenic shock. After intracoronary infusion of nicardipine or nitroprusside using the CW catheter, TIMI flow improved from the baseline in 19 cases (63.3%, P < 0.001), and 16 patients (53.3%, P < 0.001) achieved normal coronary flow at the end of the procedure. The rate of in-hospital death was 6.7% (2 cases). No clinical differences were noted between those patients who successfully achieved normal coronary flow and those with persistent no-reflow. Conclusion:,The infusion of intracoronary drugs using the novel perfusion CW RX catheter seems to be safe and could help to improve myocardial perfusion in a selected group of patients presenting with ACS who developed no-reflow during PCI. (J Interven Cardiol 2010;23:109-113) [source]

Oxytocin stimulates colonic motor activity in healthy women

NEUROGASTROENTEROLOGY & MOTILITY, Issue 2 2004
B. Ohlsson
Abstract, The effects of oxytocin in the gastrointestinal tract are unclear. The aim of this study was to examine the effect of infusion of oxytocin on colonic motility and sensitivity in healthy women. Fourteen healthy women were investigated twice. A 6-channel perfusion catheter, with three recording points (2 cm apart) proximally and three recording points distally to a barostat balloon, was inserted to the splenic flexure. An intestinal feeding tube was placed in the mid-duodenum. A 90-min duodenal lipid infusion of 3 kcal min,1 was administered. Thirty minutes after the start of the lipid infusion, the subject randomly received either 20 or 40 mU min,1 of oxytocin, or isotonic saline as intravenous infusions for 90 min. Meanwhile, the colonic motility was recorded. During the last 30 min of oxytocin and saline infusion, the visceral sensitivity to balloon distensions was examined. During lipid infusion the number of antegrade contractions per hour was 0.7 ± 0.3 after saline and 3.9 ± 1.4 after oxytocin (P = 0.03), indicating more pronounced lumen-occlusive contractile activity after oxytocin administration. Some of these consisted of high-amplitude (> 103 mmHg in amplitude) antegrade contractions. Lipid infusion evoked a decrease of the balloon volume, reflecting increased colonic tone, but there was no difference between saline and oxytocin. Sensory thresholds did not differ significantly between saline and oxytocin. Infusion of oxytocin stimulates antegrade peristaltic contractions in stimulated colon in healthy women. The effects of oxytocin on colonic motor activity deserve to be further explored, especially in patients with colonic peristaltic dysfunction. [source]

Prognostic Factors for Adult Patients Receiving Extracorporeal Membrane Oxygenation as Mechanical Circulatory Support,A 14-Year Experience at a Medical Center

ARTIFICIAL ORGANS, Issue 2 2010
Chinchun Lan
Abstract Extracorporeal membrane oxygenation (ECMO) is a resource-consuming and highly invasive treatment. There were 1100 ECMO cases at the National Taiwan University Hospital between August 1994 and November 2008. Of these, 607 were adults (>18 years old) who received ECMO as mechanical circulatory support. In this study, patient characteristics and complications during the ECMO course were evaluated for their correlation with prognosis. The following factors were significantly different between survivors and nonsurvivors: age, coronary artery disease, diabetes mellitus, brain death, stroke during ECMO, the need for dialysis during ECMO, pre-ECMO infection, hypoglycemia, acidosis, alkalosis, the need for a distal perfusion catheter, and the amount of red blood cells transfused. Six independent predictors of mortality were identified: age, stroke, the need for dialysis during ECMO, pre-ECMO infection, hypoglycemia, and alkalosis. Our institution has comparatively extensive experience with adult patients, which may be quite different from other medical centers with respect to distribution of patient age. The findings should lead to better utilization of ECMO for adult patients in the future. [source]