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8. Atrial Pacing: Intracardiac Conduction Assessed by His Bundle Electrograms Acquired from the Permanent Atrial Electrode at Implantation.

Author

O'Keeffe, Declan Barry and Geddes, John S.

Subjects
ELECTRODES, PATIENTS, DISEASES, SINOATRIAL node, ANODES
Abstract

His bundle electrograms were recorded from conventional J-shaped atrial electrodes at implantation in twelve consecutive patients who had sinus node disorder. Five patients with impairment of atrioventricular conduction, received atrioventricular (DVI) pacemakers. His bundle recording by this method is simple and reliable, avoids the discomfort of the conventional technique, and represents a new application for the well established atrial "J" electrode. [ABSTRACT FROM AUTHOR]

Published
1983
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9. LETTERS AND CORRECTIONS.

Author

Weeks, James L., Cass, Roger M., Shapiro, Michael J., Schultz, Alvin L., Kapp, Marshall B., Mulcahy, Risteard, McComb, Janet M., Khan, Mazher M., Geddes, John S., Fuenzalida, Charles E., Zoneraich, Samuel, Ballas, Mayer, Zoneraich, Olga, Rosner, Fred, Fisher, Jeffrey R., Padnick, Marvin B., Olstein, Simon, Badawy, A.A.B., and Evans, M.

Subjects
LETTERS to the editor, INTERNAL medicine
Abstract

Presents letters to the editor and corrections on articles on internal medicine. Features of the U.S. federal black lung program; Considerations regarding the patient-physician relationship as a partnership or contract; Predisposition of young women for mitral valve prolapse; Case report on erythromelalgia.

Published
1983

10. Amiodarone-Induced Hypothyroidism: A Common Complication of Prolonged Therapy: A Report of Eight Cases

Author

Hawthorne, Gillian C., Campbell, Norman P. S., Geddes, John S., Ferguson, W. Rodney, Postlethwaite, William, Sheridan, Brian, and Atkinson, A. Brew

Abstract

• Amiodarone is a widely used antiarrhythmic drug, which contains 75 mg of iodide per 200 mg of active substance. Eight of our patients receiving long-term amiodarone therapy became hypothyroid. Seven of these patients had no previous history of thyroid dysfunction or goiter. Antithyroid antibodies were absent, and standard perchlorate discharge tests were positive in seven patients when hypothyroidism was diagnosed. In one patient, amiodarone therapy was withdrawn; over the next nine months, the hypothyroidism resolved, and results of the perchlorate discharge test reverted to normal. We conclude that amiodarone-induced hypothyroidism is similar to previously described iodide-induced hypothyroidism. It may develop in the absence of a previous history of thyroid disease, and all patients receiving long-term amiodarone therapy should therefore be regularly monitored for hypothyroidism.(Arch Intern Med 1985;145:1016-1019)

Published
1985
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