Perioperative pulmonary hypertensive crisis mandates immediate management to decrease pulmonary vascular resistance
by pulmonary vasodilators either intravenous or inhalational, inotropic support and identification of the cause.
We decided to use a lumbar plexus block, in addition to the posterior sciatic nerve block and this provided adequate anesthesia with no impact on systemic vascular resistance
Multivariate general linear model analyses were performed for microalbuminuria status (no microalbuminuria and microalbuminuria versus albuminuria), renal vascular resistance
status (normal versus increased renal RI/PI), and health status (control versus PDH) as outcomes and predictors.
Caption: Figure 1: Haemodynamic parameters: (a) mean arterial pressure (MAP), (b) heart rate (HR), (c) cardiac index (CI), and (d) total peripheral vascular resistance
(TPVR) in experimental groups.
The main goals intraoperatively are (i) maintenance of a balance between the systemic vascular resistance
(SVR) and pulmonary vascular resistance
(PVR)--hemodynamic stability and (ii) maintenance of normocarbia.
Transcatheter PDA closure was performed successfully after hemodynamic assessment, pulmonary arterial pressure, and pulmonary vascular resistance
45], reported a six-fold higher risk of the progression of glaucomatous visual field deficiency with an end-diastolic velocity decrease and a vascular resistance
increase above 0.
This is the effect that would be expected since minoxidil had a preferential effect on peripheral arterioles, and not renal arterioles, as evidenced by a marked decrease in total peripheral resistance but no significant changes in renal vascular resistance
(4, 6, 14, 22, 28).
Subsequently, it results in a decrease in vascular resistance
which leads to an increase in uterine artery blood flow observable in early pregnancy.
Physiologically, obesity results in an increased oxygen requirement, which leads to increased cardiac output, increased stroke volume, decreased vascular resistance
, and increased cardiac work.
Following at suitable interval when the pulmonary artery hypertension and the pulmonary vascular resistance
were overcome the definitive repair of VSD(s) was carried out by putting a synthetic patch at the defect.
The latter two are a part of the renal vasodilator system, whereas the renin-angiotensin system represents the renal vasoconstrictor, with the vasodilator systems modulating vasoconstrictive effects of angiotensin II on one hand, and angiotensin II stimulating the secretion of vasodilatory components on the other, which prevents substantial increase in the renal vascular resistance
The perfusion index is increased by vasodilation and decreased by vasoconstriction, and may reflect changes in vascular resistance
that are not seen at the level of blood pressure or heart rate changes.
nitric oxide, prostaglandins, adenosine, hydrogen and potassium); and this can influence the reduction in peripheral vascular resistance
The rapid reduction of pulmonary vascular resistance
allows the naturally occurring pressure gradients to initiate reversal of right-to-left shunting and normalization of cardiopulmonary hemo-dynamic pressures.