A&A practice
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We present the anesthetic management of a 23-year-old gravida 2 para 0-0-1-0 with a history of mitral valve replacement secondary to congenital mitral dysplasia. The hemodynamic changes of pregnancy had resulted in severe functional mitral stenosis of her mechanical valve, which was significantly undersized for her current body surface area. Her complex cardiac history required our multidisciplinary team to focus on peripartum anticoagulation management, extracorporeal membrane oxygenation (ECMO) preparation under a dural puncture epidural (DPE) technique, and managing the hemodynamic changes that are critical for a congenital heart disease parturient.
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Spinal muscular atrophy (SMA) is an autosomal recessive condition characterized by degeneration of the anterior horn cells of the spinal cord, which causes progressive muscle atrophy and weakness. SMA type 1 is the most common type and is associated with severe disability and early mortality. Concomitant restrictive respiratory physiology often manifests with significant implications for anesthetic management. Here, we describe a successful spinal anesthetic for orthopedic surgery in an SMA type 1 patient receiving intrathecal nusinersen maintenance therapy, an antisense oligonucleotide designed to increase expression of the survival motor neuron protein, and the first US Food and Drug Administration-approved drug to treat SMA.
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Case Reports
Transesophageal Echocardiography-Guided Cardiopulmonary Resuscitation After Rocuronium Anaphylaxis.
Anaphylaxis is a life-threatening hypersensitivity reaction that can quickly progress to circulatory collapse, even in the presence of timely epinephrine administration. This report describes a case of rocuronium anaphylaxis which progressed to circulatory arrest despite intravenous epinephrine and crystalloid resuscitation. Transesophageal echocardiography performed during cardiopulmonary resuscitation enabled rapid identification of the cause of shock and redirected management to prioritize further fluid administration, leading to return of spontaneous circulation with a good outcome. The etiology of shock in anaphylaxis can be variable, and transesophageal echocardiography can rapidly identify the likely mechanism and guide treatment without interrupting ongoing resuscitative efforts.
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Case Reports
Dual RVAD-ECMO Circuits to Treat Cardiogenic Shock and Hypoxemia Due to Necrotizing Lung Infection: A Case Report.
Utilization of venoarterial extracorporeal membrane oxygenation (VA-ECMO) is expanding, but dual VA-ECMO circuits to treat cardiogenic shock with refractory hypoxemia is unreported. We describe the case of combined cardiogenic and distributive shock due to necrotizing pulmonary blastomycosis. ⋯ After 4 months on support, he underwent successful heart-lung-kidney transplantation. Dual ECMO circuits are technically feasible and may be advantageous in specific circumstances of high pulmonary shunting resulting in excessive hypoxemia unbalanced with appropriate oxygen delivery.
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We present a case in which the Dräger Primus (Dräger Medical AG&Co KG, Lüberck, Germany) anesthesia monitor displayed false readings of low end-tidal carbon dioxide (EtCO2) immediately after intubation. The patient's physical examination, vital signs, and arterial blood gases were normal. ⋯ The defective monitor gas flow rates and gas calibration values were inappropriately low. Partial opening of the solenoid zero valve allowed entrainment of room air, which caused artifactual dilution of the gas sample.