A 70-year-old woman was referred to cardiac evaluation because of the detection of dilation of the main pulmonary artery by chest computed tomography performed before the removal of a thoracic lipoma. The computed tomography scan with contrast also excluded arterial thromboembolism of the main and distal pulmonary branches. The patient had a previous diagnosis of mild pulmonary stenosis with a ...

A 46-year old female patient was admitted after a 5-m height fall. Contrast-enhanced CT scan discovered dissection of the right pulmonary artery (Figs 1 and 2) as well as rib fractures, pneumo-/ haemothorax, pulmonary contusions and pneumomedistinum. The dissection was confirmed by another CT scan 6 days later. The course was nonoperatively and uneventful. Figure 1: CT scan revealed dissection ...

The present study was undertaken to determine participation of nitric oxide (NO) in noradrenergic, noncholinergic relaxation induced by electrical field stimulation (EFS) of perivascular nerves in isolated rat main pulmonary artery and its extralobar branches. Electrical field stimulation caused a frequency-dependent relaxation of main pulmonary artery of the rat precontracted with phenylephrin...

Idiopathic dilatation of the pulmonary artery is an uncommon cause of a large main pulmonary artery whose diagnosis is dependent on the exclusion of other causes of central pulmonary artery dilatation. We present four new cases who have been known to have large central pulmonary arteries for many years, and suggest that a long period of observation should be considered to be a further criterion...

background the nasal septal deviation (nsd) is one of the major causes of nasal obstruction. this condition increases upper airway resistance. in this study we evaluated the mean pulmonary artery pressure (mpap) in patients with markedly deviated septum. methods sixty two patients with nsd (age range: 26-45 years, 34 men and 28 women) were included in the study. mean pulmonary artery pressure w...

THE behavior of the vascular bed appears to be contradictory. A number of papers indicate that the pulmonary circulation in man shows slight variations in arterial pressure during muscular exercise," after pulmonary resections" or following the occlusion of a main branch of the pulmonary artery." Conversely, other experimental and clinical studies appear to demonstrate that the pulmonary vascul...