deep vein thrombosis (dvt) is an important life threatening condition that is difficult to diagnose, particularly in the early stages. looking for dvt in lower limb can be considered ancillary in suspected cases of pulmonary embolism (pe) indirectly highlighting a cause and effect relationship of a single disease (i.e cause being dvt and effect is the assault on the lung vasculature). prompt an...

Bachground: The aim of this study was to determine of diagnostic value of albumin, anti-thrombin Ш, and fibrinogen factors in the diagnosis of pulmonary embolism compared to lung perfusion scan in patients with nephrotic syndrome referred to Hazrat Ali Asghar hospital of Tehran city (Iran) in 2018-2019.  Methods: This study was cross sectional study that was carried out on 30 patients with nep...

Introduction: The aim of this study was to evaluate the impact of measurement of coronary artery calcification score (CAC) in patients with suspected coronary artery disease (CAD) and a normal myocardial perfusion scan. Methods: In a prospective study we measured the calcium score of 74 patients (29 m, 45 f, mean age 58.7 (m) and 64.4 (f)) with suspicion of CAD and a normal perfusion scan. In ...

Pulmonary arterial hypertension (PAH) is defined as a group of diseases characterized by a progressive increase in pulmonary vascular resistance leading to right ventricular failure and premature death. Recently, the diagnostic approach has been more clearly defined according to the new clinical classification and with consensus reached on algorithms of various investigative tests and procedure...

BACKGROUND Noninvasive ventilation (NIV) tolerance has been identified as an independent predictor of survival in amyotrophic lateral sclerosis (ALS). Volume control continuous mandatory ventilation (VC-CMV) NIV has been associated with poor tolerance. The aim of this study was to determine the tolerance of subjects with ALS to VC-CMV NIV. METHODS This was a prospective study involving subjec...

The regional distribution of pulmonary ventilation and perfusion and regional alveolar ventilation/perfusion ratios were measured with radioactive xenon ((133)xenon) in 10 patients with asthma in remission. Four subjects had normal ventilation distribution, four had hypoventilation in some regions and normal ventilation in others, and two patients had abnormal ventilation in almost all lung reg...

A V/Q lung scan was obtained in a patient with LLL collapse who was receiving IPPV and PEEP. This revealed absent ventilation and hyperperfusion to the collapsed lobe. After a reduction in PEEP from 12 to 5 cm H O, a repeat V/Q scan showed a more even distribution of pulmonary perfusion. Arterial hypoxemia improved. (Chest 1991; 99:1034-36) D espite continuing controversy regarding the most app...