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Mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (MELAS syndrome) is a mitochondrial disorder associated with neurologic, cardiac, neuromuscular, hepatic, metabolic and gastrointestinal dysfunction and potential anesthetic and obstetric complications. The case of a parturient with MELAS syndrome requiring labor analgesia is presented. A Medline literature search limited to the English language was undertaken to review cases of MELAS syndrome. Based on our experience and literature review, parturients with MELAS syndrome appear to benefit from neuraxial analgesia and anesthesia, which blunt excessive oxygen consumption and acidosis.

Wider selection of young patients for prosthetic valve replacement for valvular heart disease has resulted in an increase in number of women with heart disease reaching childbearing age. Such patients presenting in labor for emergency cesarean section require special consideration. We present a report of a parturient who presented at 36 weeks of gestation with severe aortic and mitral stenosis, pulmonary edema and severe preeclampsia. The goals of our anesthetic management included (1) careful airway management (2) maintaining stable hemodynamics (3) optimizing fluid status, and (4) preventing seizures. Issues related to management of patients with severe valvular disease, prosthetic valves and complications due to anticoagulant therapy during pregnancy are discussed.

Massive pulmonary thromboembolism (PTE) is a condition that can still be seen in the operating room despite the use of thromboprophylaxis. A high degree of suspicion of this condition is necessary to achieve an early diagnosis and a rapid treatment to improve patient outcome. We report on a 27-year-old patient who sustained a massive PTE while undergoing a second-stage anterior release and posterior fusion of his thoracolumbar spine for idiopathic scoliosis.