نتایج جستجو برای: pulmonary artery hypertension
تعداد نتایج: 527701 فیلتر نتایج به سال:
We describe a 54-year-old woman with isolated pulmonary arterial hypertension accompanied by hyperthyroidism due to Graves' disease. Her pulmonary artery hypertension resolved spontaneously after restoration of euthyroidism. This case suggests that hyperthyroidism should be considered a reversible cause of pulmonary arterial hypertension.
Our study aimed to determine the prevalence of occult left-heart disease in patients with scleroderma and pulmonary hypertension. In patients with pulmonary hypertension (mean pulmonary artery pressure (mean PAP)≥25 mmHg), differentiation between pre- and post-capillary pulmonary hypertension has been made according to pulmonary artery wedge pressure (PAWP) less than or more than 15 mmHg, respe...
precapillary pulmonary resistance. Pulmonary hypertension is deemed present when the mean pulmonary artery pressure exceeds 25 mm Hg at rest, or 30 mm Hg with exercise. The presence of pulmonary arterial hypertension further requires normal left heart filling pressures (i.e. a normal left ventricular end diastolic pressure directly measured, or indirectly approximated by a pulmonary artery occl...
CASE SERIES SUMMARY Two cats were evaluated for progressive exercise intolerance, dyspnea and unilateral infiltrate of the left lung. Computed tomography angiography (CTA) revealed absence of the right pulmonary artery in both cats with systemic arterial collateral vessels perfusing the right segmental pulmonary arteries. In one case, the collateral vessels arose from the esophageal artery, whi...
Pulmonary hypertension is characterised by a progressive increase in pulmonary arterial resistance due to endothelial and smooth muscle cell proliferation resulting in chronic obstruction of small pulmonary arteries. There is evidence that inflammatory mechanisms may contribute to the pathogenesis of human and experimental pulmonary hypertension. The aim of the study was to address the role of ...
Pulsus alternans of the pulmonary artery without systemic pulsus alternans is uncommon and is associated with multiple diseases. Two cases of pulmonary hypertension with pulmonary arterial pulsus alternans and right-sided heart failure are described. Primary pulmonary hypertension was demonstrated at autopsy in both cases. These two case reports constitute another previously unreported cause fo...
The use of systemic vasodilator drugs in reducing pulmonary artery pressures in patients with pulmonary hypertension is controversial. The effect of hydralazine in four patients with pulmonary hypertension resulting from interstitial lung disease (group 1) and nifedipine in four patients with pulmonary hypertension secondary to progressive systemic sclerosis (group 2) was investigated. Hydralaz...
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