EXERTIONAL HYPOXEMIA DUE TO RIGHT TO LEFT INTERATRIAL SHUNT AFTER LEFT PNEUMONECTOMY

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Right-to-left shunt with hypoxemia in pulmonary hypertension

BACKGROUND Hypoxemia is common in pulmonary hypertension (PH) and may be partly related to ventilation/perfusion mismatch, low diffusion capacity, low cardiac output, and/or right-to-left (RL) shunting. METHODS To determine whether true RL shunting causing hypoxemia is caused by intracardiac shunting, as classically considered, a retrospective single center study was conducted in consecutive ...

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Shortness of breath after pneumonectomy is a common finding that has multiple causes. We report the cases of two patients with shortness of breath on assuming an upright posture (platypnea) that followed pneumonectomy; these individuals developed right-to-left shunt across a patent foramen ovale (PFO) with normal right-sided intracardiac pressures. Both contrast echocardiography and magnetic re...

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Right-to-Left Shunt

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Dyspnoea and hypoxaemia after lung surgery: the role of interatrial right-to-left shunt.

After lung surgery, some patients complain of unexplained increased dyspnoea associated with hypoxaemia. This clinical presentation may be due to an interatrial right-to-left shunt despite normal right heart pressure. Some of these patients show postural dependency of hypoxaemia, whereas others do not. In this article, the pathogenesis and mechanisms involved in this post-surgical complication ...

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ژورنال

عنوان ژورنال: Journal of the American College of Cardiology

سال: 2021

ISSN: 0735-1097

DOI: 10.1016/s0735-1097(21)03755-4