ISOLATED VENTRICLES AFTER IVH
نویسندگان
چکیده
منابع مشابه
Mechanical restitution of isolated perfused canine left ventricles.
We measured cardiac mechanical restitution curves, which describe the time course of recovery of ventricular contractile strength following a steady-state beat. In the first series of experiments, we studied left ventricles that beat isovolumically throughout the experiment, allowing use of dP/dtmax as a reliable index of contractile strength independent of the influence of changing ventricular...
متن کاملIVH - the rise (and fall) of the surfactant dose?
Given that a trend towards an increase in overall IVH incidence with natural surfactant was noted in the metaanalysis by Soll,2 an important question arises: Could a recent trend in higher concentrations/doses of natural surfactant lead to an increase in IVH? It is not suggested that there is a consistent association between surfactant treatment and IVH, but this is an interesting consideration...
متن کاملDynamics of intramural and transmural reentry during ventricular fibrillation in isolated swine ventricles.
The intramural dynamics of ventricular fibrillation (VF) remain poorly understood. Recent investigations have suggested that stable intramural reentry may underlie the mechanisms of VF. We performed optical mapping studies of VF in isolated swine right ventricles (RVs) and left ventricles (LVs). Nine RV walls were cut obliquely in their distal edge exposing the transmural surface. Six LV wedge ...
متن کاملAction potential transfer in cell pairs isolated from adult rat and guinea pig ventricles.
An enzymatic procedure was used to obtain ventricular cells from adult rat and guinea pig hearts. Isolated pairs of cells were selected to study the action potential transfer from cell to cell and determine the resistance of the nexal membrane, rn. For this purpose, each cell of a cell pair was connected to a patch pipette so as to enable whole-cell, tight-seal recording. Normal impulse transmi...
متن کاملDose-Dependent Inhibition of Stretch-Induced Arrhythmias by Gadolinium in Isolated Canine Ventricles
Transient diastolic dilatation of the isolated canine left ventricle predictably elicits arrhythmias. To test the hypothesis that such arrhythmias may be mediated by sarcolemmal stretch-activated channels, we attempted to inhibit stretch-induced arrhythmias with gadolinium (Gd3+), a potent stretch-activated channel blocker. In experiments with six isolated canine hearts, left ventricular volume...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Pediatric Research
سال: 1984
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-198404001-01729