The role of patent foramen ovale (PFO) in cryptogenic stroke has received increasing attention in recent times (1). Cryptogenic stroke via PFO is a form of paradoxical embolism. Formerly diagnosable during life only by cardiac catheterization (2), PFOassociated paradoxical embolism can nowadays be diagnosed noninvasively by echocardiography. Performance of a Valsalva maneuver is an integral par...

Introduction: Spontaneous pneumomediastinum (SP) is the accumulation of air in mediastinum without a surgical or traumatic etiology. It thought that basic mechanism triggering SP pressure difference develops after strong Valsalva maneuver.
 Case report: We presented 50-year-old male patient was admitted to emergency department with sudden onset chest and epigastric pain started standing up...

Compensated cardiac patients, like normal subjects, on performing the Valsalva maneuver show a decrease in systolic, diastolic, and pulse pressures during the blowing effort and a characteristic hy-pertensive overshoot after the release of the strain. Cardiac patients in congestive failure show the "failure response" with a maintenance of the systolic, diastolic, and pulse pressures during the ...

A PATIENT was found to have a mediastin-al inass on a routine chest x-ray. The inat-Lne of the lesion, anl intrathoracic. goiter, was determined only after several diagnostie procedures. In r etrospect, the correct diagnosis could have been made during the initial physical examiniationi by mleanis of the Valsalva mnaneuver. A seconid patienit was reeelntly seeni with a sinmilar lesion. The Vals...

Protective Effects of Acetazolamide and Hyperbaric Oxygenation on Experimentally Induced Syncope • The protective effects of acetazolamide and hyperbaric oxygenation on experimentally induced syncope were evaluated in seven healthy male subjects. Syncope was induced by vigorous hyperventilation and Valsalva maneuver. Each subject performed these procedures three times in each of the following c...

Pneumomediastinum (PnM) is an uncommon phenomenon, though it is one of the most common causes of chest pain in young adults. It may be particularly important among aviators, as it may result in in-flight incapacitation. Spontaneous PnM is a variant usually associated with the Valsalva maneuver, used during high-performance flight. This may increase the risk of PnM recurrence and raises concern ...