Hung-Chan Kou

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Fracture of a polyethylene tibial post in a knee prosthesis after a total knee arthroplasty (TKA) is an uncommon but severe complication of polyethylene tibial post wear. A fractured tibial post results in an unstable and malfunctioning knee. Revision knee surgery is necessary to restore function of the affected knee. We report a case of a nontraumatic(More)
Electrophysiologic study, isoproterenol infusion, and serial treadmill exercise tests before and after administration of propranolol, verapamil, lidocaine, and procainamide were done in three patients with exercise-triggered ventricular tachycardia. In all three patients, organic heart diseases were absent. Ventricular tachycardia was reproducibly provoked(More)
Electrophysiologic studies were performed before and 2 hours after the oral administration of 270 mg of diltiazem in 3 divided doses at 8-hour intervals in 36 patients with paroxysmal supraventricular tachycardia (SVT). Before diltiazem, all 36 patients had induction of sustained SVT: 24 with atrioventricular (AV) reentrance incorporating an accessory(More)
We studied the effects of succinylcholine (SCC) on serum levels of myoglobin (Mb) and CK in children under halothane or enflurane anesthesia. Forty-five children, aged 2 years 11 months to 12 years 6 months were subjected to this study. They were divided into four groups; the two groups were injected with SCC 1 mg.kg-1 intravenously to facilitate tracheal(More)
In 14 patients with atrioventricular reentrant tachycardia incorporating an accessory pathway, electrophysiologic studies were performed before and serially at 0.5--1-hour intervals for 6 hours after the fourth dose of 80 mg of oral verapamil given every 6 hours. Verapamil increased both the longest atrial paced cycle length producing type 1(More)
In 22 patients with atrioventricular reentrant tachycardia incorporating a retrogradely conducting accessory pathway, electrophysiologic studies were done before and after oral digoxin, 1.25 mg, and propranolol, 160 to 240 mg, each given in 4 divided doses at 6-hour intervals. Before digoxin and propranolol, all 22 patients had induction of sustained(More)
A 53-year-old female visited our out-patient department complaining of right flank pain. Ultrasonography revealed a solid mass lesion in the lower pole of the right kidney and further evaluation was scheduled. A few days later, she suddenly felt pain at the abdominal enlarged mass. Computed tomographic (CT) scan revealed a huge retroperitoneal mass with(More)
Serum potassium (K+) levels were measured after intravenous injection of succinylcholine (SCh) in 10 children with chronic renal failure, 10 normal children aged 1 to 10 years and 10 children with chronic renal failure after pretreatment with pancuronium prior to SCh. Arterial blood gas was maintained within normal ranges. The serum K+ level increased(More)
Factors determining tachycardia induction using ventricular stimulation in atrioventricular (AV) nodal reentrant tachycardia utilizing the slow pathway for anterograde and the fast pathway for retrograde conduction were analyzed in 53 patients. Sixteen patients had tachycardia induced by ventricular stimulation. In 15, tachycardia was inducible with(More)
Nineteen patients with ischemic heart disease were studied to determine plasma levels of isosorbide dinitrate (ISDN) and its metabolites, isosorbide-2-mononitrate (2-ISMN) and isosorbide-5-mononitrate (5-ISMN) for 6 hrs during intravenous administration of ISDN, using gas chromatography. Differences in plasma levels of these substances were also evaluated(More)