Background: A 42-year-old woman with limited cutaneous systemic sclerosis presented with rapid-onset dyspnea on exertion, which had developed over the previous 8 weeks. She had not experienced any ...

A high index of suspicion combined with a meticulous history and physical examination is paramount in the evaluation of patients with pulmonary hypertension. Careful attention should be given to prior ...

This article, the last in a five-part series on nuclear medicine imaging techniques, explains how ventilation/perfusion scintigraphy works and what precautions are required when it is used Nuclear ...

A heart perfusion imaging scan, or myocardial perfusion scan, is a test that tells doctors how well a person’s heart pumps blood. Doctors may use this test when diagnosing the cause of chest pain or ...

MDCT pulmonary angiography is replacing the ventilation-perfusion lung scan to diagnose suspected pulmonary embolism in hospitalized patients, say researchers from Rhode Island Hospital in Providence.

Backround A 40-year-old woman presented with dyspnea in the fifth month of pregnancy followed by a sudden onset of pleuritic chest pain 2 weeks postpartum. She was diagnosed as having pulmonary ...

When you breathe, a certain fraction of your air enters the lungs and blood flows through the capillaries. When this ratio is above or below 0.8, you may have ventilation/perfusion (V/Q) mismatch. A V ...

THE present study was undertaken to determine if the pattern of ventilation, by itself, may influence oxygenation during anesthesia and surgery. The hypothesis was examined that progressive pulmonary ...

The influence of gravity on the distributions of ventilation and blood flow, as demonstrated by the effects of posture, is discussed and explained on the theoretical basis of gravitational gradients ...

Background A 42-year-old woman with limited cutaneous systemic sclerosis presented with rapid-onset dyspnea on exertion, which had developed over the previous 8 weeks. She had not experienced any ...