Monitoring that can predict fluid responsiveness is an unsettled matter for spontaneously breathing patients. Based on the convincing results with dynamic monitoring based on preload variations induced by mechanical ventilation, we hypothesised that the extra systolic post-ectopic beat could constitute a similar intermittent preload shift inducing a brief variation in blood pressure and that the magnitude of this variation could predict the hemodynamic response to volume expansion in sedated pigs. Ten pigs were sedated and hemodynamically monitored and four intravascular volume shifts were made: blood depletion (25% of estimated blood volume; 660 ml), retransfusion (of 500 ml depleted blood), and two sequential volume expansions (500 ml colloid each).
View Article and Find Full Text PDFThe above article has been retracted by the authors, as they have withdrawn the data upon which it was based. The retraction was made before the article reached its final form in the publication process. However, the authors' manuscript, prior to copy editing, page layout and proofing, was initially made available online upon acceptance as an Accepted Preprint.
View Article and Find Full Text PDFClin Endocrinol (Oxf)
February 2008
Objective: Recent studies suggested that the effect of adiponectin on insulin-stimulated glucose metabolism is mediated primarily by the high molecular weight (HMW) form of adiponectin. In the present study we evaluated total and HMW adiponectin in polycystic ovary syndrome (PCOS) patients and controls and examined possible mechanisms for increased insulin sensitivity during pioglitazone treatment.
Study Subjects: Thirty PCOS patients randomized to pioglitazone, 30 mg/day, or placebo for 16 weeks and 14 weight-matched healthy females were studied.
Context: Pubertal stages have been shown to influence total adiponectin (ADPN) levels. Furthermore, testosterone has been shown to alter the isomer distribution of ADPN.
Objective: The goal of this study was to investigate whether pubertal stages and testosterone levels influenced total serum ADPN levels and the distribution of ADPN isomers.