Prevalence and potential determinants of exertional dyspnea after acute pulmonary embolism

Lung mechanics and exertional dyspnea in pulmonary arterial hypertension.

inspiratory capacity is often decreased in PAH, and that this is associated with a decreased aerobic exercise capacity and a shorter life expectancy. Inspiratory capacity is the difference between total lung capacity and functional residual capacity, and as such increases in the presence of expiratory airflow limitation or dynamic hyperinflation. The authors measured in 50 patients with PAH an ...

Prevalence of pulmonary embolism

The series studied comprised 6197 patients who had died of or who had cancer at death and represents all patients with cancer from 21530 necropsies performed at this department from 1960-84. Pulmonary embolism was significantly more common among cancer patients than in those with non-neoplastic diseases. Among those palliatively treated, patients with ovarian cancer, cancer of the extrahepatic ...

Acute Pulmonary Embolism after Radiofrequency Catheter Ablation

The prevalence of pulmonary embolism in acute exacerbations of COPD.

With great interest we read the systematic review by Rizkallah et al1 in CHEST reporting a high prevalence of pulmonary embolism (PE) during an acute exacerbation of COPD (AECOPD). The authors suggest that one of four COPD patients who require hospitalization for an acute exacerbation may have a PE. In our opinion however, the results of their study are skewed due to inadequate study sampling a...

Exertional dyspnea and ventilation in hyperthyroidism.

Dyspnea is recognized to be an important feature in patients with hyperthyroidism at rest and during exercise. However, its etiology is not well-understood. Since dyspnea is thought to be related to the perception of excessive ventilatory effort, we explored the possibility that dyspnea in these patients might be related to an inappropriate ventilatory response to the increased metabolic rate. ...