In 12 patients with atrial septal defect or anomalous pulmonary venous connection, pulmonary vein wedge mean pressure uniformly exceeded mean pressure in the left atrium or pulmonary vein and with one exception was less than mean pressure in the pulmonary artery. There was a positive correlation between pulmonary arteriolar resistance and the difference in pressure between pulmonary artery and ...

The abnormalities of pulmonary arterial blood supply in mitral stenosis, consisting primarily of constriction of lower lobe vessels with resultant upper lobe preferential flow, was assessed by means of pulmonary angiography in 30 patients with mitral stenosis uncomplicated by other cardiac diseases. The abnormalities in blood flow correlated best with both the pulmonay artery pressure and the p...

conclusions cp could be considered as an index for the prediction of vasoreactivity in patients with ipah. prediction of long-term response to calcium channel blockers in patients with ipah and a positive vasoreactive test by this index should be addressed in further studies. patients and methods fourteen patients with ipah and a vasoreactive adenosine vasoreactivity testing according to the es...

Keywords: chest radiograph; haemodialysis catheter; jugular vein and a triple lumen catheter in the right. Four days post-operatively, she developed a fever, pericardial tamponade; central venous cannulation; complications hypotension, a worsening systemic acidosis and olig-uria. Pulmonary artery catheter readings revealed a pulmonary artery wedge pressure of 23 mmHg, pulmonary artery pressure ...

BACKGROUND Pressure and waveform at the catheter tip are continuously monitored during catheterization of pulmonary artery to ensure accurate catheter placement. We present a case in which pulmonary venous blood was unexpectedly collected from the pulmonary artery catheter despite pulmonary artery pressure and waveform detection at the catheter tip, and describe the measures taken to correct th...

Victor Pretorius, MBchB Division of Cardiothoracic Surgery University of California San Diego La Jolla, CA Chronic thromboembolic pulmonary hypertension (CTEPH) is defined as a mean pulmonary artery pressure 25 mm Hg and pulmonary artery wedge pressure 15 mm Hg in the presence of occlusive thrombi within the pulmonary arteries. Surgical pulmonary thromboendarterectomy (PTE) is considered the be...

To determine their usefulness in estimating pulmonary artery pressure, left ventricular systolic time intervals (STI) were determined by echocardiography in 65 patients with dextro-transposition of the great arteries (TGA). The STI were measured from recordings of pulmonary valve motion at 100 mm/sec paper speed. The pre-ejection period (PEP) and the ratio of PEP to left ventricular ejection ti...

Pulmonary artery wedge and plasma colloid osmotic pressures and their relationship to pulmonary edema were investigated in 26 patients with acute myocardial infarction of whom 14 developed pulmonary edema. In the absence of pulmonary edema, both the pulmonary artery wedge pressure and plasma colloid osmotic pressure were in normal range; after onset pulmonary edema, a moderate increase in pulmo...

AIM To characterize the buffering function of the pulmonary artery in vivo and to determine the role of vascular smooth muscle (VSM) activation in vessel wall elasticity. MATERIAL AND METHOD Pulmonary artery pressure and diameter were measured in 9 anesthetized sheep. Pulmonary artery hypertension was induced by mechanical occlusion of the pulmonary artery and by phenylephrine infusion (5 mic...

BACKGROUND There are limited data on the prevalence, pathophysiology, and management implications of pulmonary hypertension in patients with obstructive hypertrophic cardiomyopathy and advanced heart failure. METHODS AND RESULTS To assess the clinical significance of measured cardiopulmonary hemodynamics in hypertrophic cardiomyopathy patients with heart failure, we retrospectively assessed r...