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CASE REPORTS
JOURNAL ARTICLE
REVIEW
Refractory Hypoxemia in a Patient with Submassive Pulmonary Embolism and an Intracardiac Shunt: A Case Report and Review of the Literature.
Permanente Journal 2018
INTRODUCTION: Acute pulmonary embolism is the third leading cause of cardiovascular death. Management options include anticoagulation with or without thrombolysis. Concurrent persistent hypoxemia should be a clue to the existence of an intracardiac shunt.
CASE PRESENTATION: A 46-year-old man experienced acute hypoxemic respiratory failure requiring mechanical ventilation after anesthesia induction for elective hip arthroplasty. He was found to have submassive bilateral pulmonary emboli with acute right ventricular dysfunction and a coexisting patent foramen ovale with right-to-left shunt. He remained profoundly hypoxemic despite catheter-directed thrombolysis. He underwent surgical embolectomy with partial endarterectomy, resulting in clinical improvement.
DISCUSSION: The management of acute submassive pulmonary embolism is undertaken on an individualized basis because of the wide spectrum of clinical presentations. In this report we review the literature and discuss the evidence behind the management of cases of acute pulmonary embolism complicated by hypoxemia from a patent foramen ovale. In a case of acute pulmonary embolism complicated by refractory hypoxemia from an intracardiac shunt, adjunctive therapies in addition to anticoagulation and thrombolysis must be considered.
CASE PRESENTATION: A 46-year-old man experienced acute hypoxemic respiratory failure requiring mechanical ventilation after anesthesia induction for elective hip arthroplasty. He was found to have submassive bilateral pulmonary emboli with acute right ventricular dysfunction and a coexisting patent foramen ovale with right-to-left shunt. He remained profoundly hypoxemic despite catheter-directed thrombolysis. He underwent surgical embolectomy with partial endarterectomy, resulting in clinical improvement.
DISCUSSION: The management of acute submassive pulmonary embolism is undertaken on an individualized basis because of the wide spectrum of clinical presentations. In this report we review the literature and discuss the evidence behind the management of cases of acute pulmonary embolism complicated by hypoxemia from a patent foramen ovale. In a case of acute pulmonary embolism complicated by refractory hypoxemia from an intracardiac shunt, adjunctive therapies in addition to anticoagulation and thrombolysis must be considered.
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