Action of Promethazine on Systemic Blood Pressure, Pulmonary Artery Pressure, and Pulmonary Blood-flow

Efficacy of High Dose Vitamin D on Pulmonary Artery Pressure in Thalassemia Patients Undergoing Blood Transfusion: A Randomized Trial

Background: Pulmonary arterial hypertension (PAH) may result in cardiomyopathy which is a major cause of death in thalassemia patients. Vitamin D is associated with benefits in cardiovascular disorders. Our purpose was to study effects of vitamin D on pulmonary artery pressure in thalassemia major and intermedia patients. Materials and Methods: This randomized trial was performed on 26 patient...

Increase of alveolar pressure reduces systemic-to-pulmonary bronchial blood flow in humans.

We studied the effect of positive alveolar pressure (PA) on systemic to pulmonary bronchial blood flow, Q?? in humans. The Q?? was measured during total cardiopulmonary bypass as the volume of blood accumulating in the left heart. This blood was vented by gravity from the left heart via a cannula introduced in the right upper pulmonary vein and advanced to the lowest portion of the left heart. ...

Visible pulsation in relation to blood flow and pressure in the pulmonary artery.

Pulmonary blood flow distribution after banding of pulmonary artery.

Radioisotope lung scanning was used to investigate the distribution of pulmonary blood flow after banding of the pulmonary artery in children with a left-to-right shunt and pulmonary hypertension. An abnormal distribution of blood flow in the lung on the side of the operation approach was observed in all patients in the first three weeks following surgery. Abnormalities were still observed in 1...

Results of systemic-to-pulmonary artery anastomosis for tricuspid atresia with reduced pulmonary blood flow.

Fifty-six patients with tricuspid atresia and decreased pulmonary blood flow received a systemic-to-pulmonary artery anastomosis as a preliminary operation. Thirty-five had a Waterston shunt, 12 a Blalock-Taussig anastomosis, and nine various other procedures. The age at operation ranged from 2 days to 10 years (median 4.5 months). Pulmonary atresia was present in eight newborn infants. Four pa...