Clinical, biochemical, and haemodynamic studies in man during refractory hypotension

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Vasopressin for refractory hypotension during cardiopulmonary bypass.

Studies in Clinical Shock and Hypotension

a rapid infusion of dextran. Cardiac output returned to normal in 20 patients and shock or hypotension was corrected in 16. In 10 patients with evidence of vasoconstriction and normal cardiac function, dextran reversed the circulatory abnormality, returning blood pressure, cardiac output, and peripheral vascular resistance to normal. Twelve patients with hypotension without evidence of reflex v...

Hypotension during subarachnoid anaesthesia: haemodynamic effects of ephedrine.

We have compared the haemodynamic effects of ephedrine alone with ephedrine and colloid for the treatment of hypotension produced by subarachnoid anaesthesia in 30 patients aged 60-90 yr with fractures of the neck of femur. Group one received ephedrine as an initial bolus dose of 0.2 mg kg-1 followed by an infusion of 0.5 mg kg-1 h-1. Group two received ephedrine and colloid (polygeline, Haemac...

HYPOTENSION Incomplete filling and incoordinate contraction as mechanisms of hypotension during ventricular tachycardia in man

We sought to determine mechanisms for decrease of cardiac output and for hypotension during ventricular tachycardia (VT) in man. Two-dimensional and M mode echocardiograms and left ventricular pressure from micromanometer-tipped catheters were obtained in 20 patients before, during, and at the end of induced hypotensive VT. Patients were divided into two groups according to left ventricular fun...