Pulsed radiofrequency lesioning of the median nerve in a patient with bilateral carpal tunnel syndrome: A case report

Carpal tunnel syndrome, compression of the median nerve in the carpal tunnel at the wrist, is the most common entrapment syndrome of peripheral nerve. It is characterized by sensory and motor symptoms and signs in the distribution of the median nerve. Radiofrequency thermocoagulation is a neuroablative treatment for various chronic pain disorders, but is associated with neural injury, neuritis, and occasional neuroma. Unlike RF, pulsed radiofrequency, the use of the high current intensity and electrical fields, has been proposed for the modulation of the excited nervous system pathway of pain without neuro-destruction and other potential complications. We report a case of bilateral carpal tunnel syndrome that was relieved after PRF lesioning of both median nerves.

Acute-on-chronic subdural hematoma by spinal anesthesia in a patient with undiagnosed chronic subdural hematoma: A case report / 대한마취과학회지

Subdural hematoma is a serious but rare complication of spinal anesthesia. A 70-year-old woman patient underwent elective total knee replacement under spinal anesthesia. At 4 days postoperatively, the patient complained of headache and vomiting. Brain computed tomography revealed an acute-on-chronic subdural hematoma with midline shift. The patient recovered completely after surgical decompression. We report a patient with an undiagnosed chronic subdural hematoma, who developed acute-on-chronic subdural hematoma after spinal anesthesia.

Air embolism during anesthesia in the beach chair position for shoulder surgery: A case report

A 60-year-old man was scheduled for elective right shoulder surgery. The patient was placed in the beach chair position. A venous air embolism was suspected because of a sudden decrease in the end-tidal carbon dioxide concentration, hypoxemia, tachycardia, and hypotension 5 mins after a stab incision in the surgical site. We inserted a central venous access catheter and provided hemodynamic support and cardiopulmonary resuscitation, but the patient died. We present this case to make surgeons and anesthesiologists aware of the possibility of air embolism during shoulder surgery in the beach chair position.

Long QT syndrome provoked by induction of general anesthesia: A case report / 대한마취과학회지

Long QT syndrome (LQTS) is an arrhythmogenic cardiovascular disorder resulting from mutations in cardiac ion channels. LQTS is characterized by prolonged ventricular repolarization and frequently manifests itself as QT interval prolongation on the electrocardiogram (ECG). A variety of commonly prescribed anesthetic drugs possess the adverse property of prolonging cardiac repolarization and may provoke serious ventricular tachyarrhythmia called 'torsades de pointes', ventricular fibrillation, and sudden death. We experienced a case of ventricular tachycardia and ventricular fibrillation after anesthetic induction and it came out into the open that anesthetic induction provoked long QT syndrome.