A&A practice
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Congenital methemoglobinemia is a rare disease that is easily overlooked in its mild form. It can lead to tissue hypoxia as methemoglobin does not possess oxygen-carrying capacity. ⋯ The perioperative management of congenital methemoglobinemia is well described in the literature; however, its management in children with congenital heart disease and undergoing cardiac surgery using cardiopulmonary bypass has not been reported. We present a case and its management where congenital methemoglobinemia was detected in the operating room in a child scheduled for cardiac surgery.
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Case Reports
Potential Patent Blue V Overdose in a Patient Undergoing Free-Flap Breast Reconstruction: A Case Report.
The case of a patient who experienced serious adverse effects following a potential overdose of Patent Blue V dye (PVB) is presented here. A 65-year-old woman developed cardiac arrythmias and circulatory instability 35 minutes after receiving 100 mg PVB during breast cancer surgery. ⋯ However, mast-cell tryptase levels were normal and subsequent allergy testing for all potential allergens was negative. This case highlights that life-threatening reactions to perioperative PVB should not always be attributed to anaphylaxis; systemic toxicity could occur with an overdose.
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Case Reports
Palliative Nerve Block for Penile Calciphylaxis: A Case Report on Ultrasound-Guided Phenol Neurolysis.
A 78-year-old man with uncontrolled diabetes, heart failure, and hemodialysis-dependent end-stage renal disease presented with intractable penile pain secondary to calciphylaxis and necrosis of his glans penis. Given pain refractory to pharmacologic management and refusal of surgery, treatment entailed an ultrasound-guided dorsal penile nerve block with 5 mL of aqueous 4% phenol bilaterally. The patient reported immediate relief and died pain-free 3 months later. While phenol nerve blocks are increasingly uncommon due to local tissue toxicity, the precision of ultrasound leverages phenol's denaturing and axonal demyelinating properties to facilitate long-term targeted neurolysis to palliate chronic nonmalignant pain.
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This case describes a patient who underwent mitral valve replacement (MVR) surgery with preservation of the subvalvular apparatus who suffered anterolateral papillary muscle rupture (PMR) postseparation from cardiopulmonary bypass. This patient had no history of coronary artery disease (CAD); subsequent pathology of the papillary muscle showed evidence of amyloid deposition. Although most PMRs are caused by ischemia from CAD, cardiac amyloidosis must be considered in the absence of CAD and worked up appropriately as cardiac involvement of amyloidosis, especially the amyloid light-chain (AL) subtype, is prognostic of increased mortality that can be mitigated with therapy.
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We present a case of a child with Aicardi-Goutières Syndrome (AGS) undergoing general anesthesia for placement of a laparoscopic gastrostomy tube. AGS is a rare genetic leukodystrophy that can affect most organ systems with extensive neurologic effects. ⋯ We describe our anesthetic management and discuss these implications. The patient had a prolonged duration of action of rocuronium and an otherwise uneventful anesthetic course.