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

Postpneumonectomy interatrial right-to-left shunt.

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 ...

Right-to-left interatrial shunt causing platypnea after pneumonectomy. A recent experience and diagnostic value of dynamic magnetic resonance imaging.

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...

Right-to-Left Shunt

The patient is a 25-year-old woman transferred to Hermann Hospital 3 days after admission to an outlying facility. The patient initially woke up at 3 AM with acute onset of nausea, mild headache, hemoptysis (1⁄4/4 cup of fresh blood), and worsening shortness of breath. She then noticed weakness in the right half of her body associated with dysarthria. She had no associated chest pain or palpita...

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 ...