Search Results - "Schaal, S F"

Prolonged atrial conduction. A major predisposing factor for the development of atrial flutter by Leier, C V, Meacham, J A, Schaal, S F

“…Electrophysiological studies were performed during sinus rhythm on 21 patients who had demonstrated the spontaneous occurrence of sustained atrial flutter. The…”
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Clinical Significance of an Equivocal Signal-Averaged Electrocardiogram by Nelson, Steven D, Meier, Mark, Mehdirad, Ali A, Love, Charles J, Schaal, Stephen F

“…Patients with an equivocal signal averaged electrocardiogram (SAECG) had less heart disease and better prognosis than patients with overtly abnormal SAECGs. An…”
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Mitral valve prolapse: cardiac arrest with long-term survival by Boudoulas, H, Schaal, S F, Stang, J M, Fontana, M E, Kolibash, A J, Wooley, C F

“…Cardiac arrest has been reported in patients with mitral valve prolapse; however, clinical characteristics and survival information are limited since most of…”
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Hemodynamic and electrophysiologic effects of disopyramide enantiomers in a canine blood superfusion model by Kidwell, G A, Lima, J J, Schaal, S F, Muir, 3rd, W W

“…The use of disopyramide is often limited because of adverse hemodynamic or electrophysiologic side effects. We compared the S(+) and R(-) enantiomers of…”
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The noninvasive localization of ventricular pacing sites by radionuclide phase imaging by BASHORE, T. M, STINE, R. A, SHAFFER, P. B, BUSH, C. A, LEIER, C. V, SCHAAL, S. F

“…This study was designed to investigate the potential role of radionuclide angiographic phase imaging in defining ventricular pacing sites. Twenty patients were…”
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Clinical experience and grading of amiodarone keratopathy by Orlando, R G, Dangel, M E, Schaal, S F

“…Eighteen patients receiving the cardiac drug amiodarone were followed prospectively for the development of amiodarone keratopathy. Seventeen of 18 patients…”
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The Konservat-Lagerstatte Menat --an overview and new insights by Wedmann, S, Uhl, D, Lehmann, T, Garrouste, R, Nel, A, Gomez, B, Smith, K, Schaal, S.F.K

“…The Konservat-Lagerstatte Menat (Puy-de-Dome, France) is an outstanding archive of a Paleocene ecosystem, which was deposited in a former maar lake…”
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Antiarrhythmic activity and unbound concentrations of disopyramide enantiomers in patients by Lima, J J, Wenzke, S C, Boudoulas, H, Schaal, S F

“…Six patients with reproducible inducible atrial flutter randomly received, in double-blinded fashion, 77 mg of S(+)-disopyramide and R(-)-disopyramide over 20…”
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Electrophysiologic interactions of procainamide and N-acetylprocainamide in isolated canine cardiac Purkinje fibers by Coyle, J D, Carnes, C A, Schaal, S F, Muir, 3rd, W W

“…The study objective was to characterize the electrophysiologic interactions of procainamide (PA) and its metabolite, N-acetylprocainamide (NAPA), in canine…”
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Repolarization variant vs acute pericarditis. A prospective electrocardiographic and echocardiographic evaluation by Wanner, W R, Schaal, S F, Bashore, T M, Norton, V J, Lewis, R P, Fulkerson, P K

“…Patients with ECG nonischemic ST segment elevation were prospectively studied to determine the accuracy of the initial ECG diagnoses. Evaluations were made of…”
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Clinical significance of terminal QRS abnormalities in the setting of inferior myocardial infarction by Babbitt, D G, Binkley, P F, Schaal, S F

“…To ascertain the clinical relevance of terminal electrocardiographic (ECG) QRS prolongation in the setting of inferior myocardial infarction, 32 patients were…”
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Electrophysiologic mechanisms of provoked atrial flutter in mitral valve prolapse syndrome by Dobmeyer, David J., Stine, Ronald A., Leier, Carl V., Schaal, Stephen F.

“…To examine the electrophysiologic determinants of provoked atrial flutter (AF) in patients with mitral valve prolapse (MVP), studies were performed in 4 groups…”
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Effect of cimetidine on quinidine bioavailability by MacKichan, J J, Boudoulas, H, Schaal, S F

“…Elevations in quinidine steady-state serum concentrations have been reported in patients who received cimetidine concurrently. Studies in normal volunteers…”
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Stereospecific effects of disopyramide enantiomers following pretreatment of canine cardiac Purkinje fibers with verapamil and nisoldipine by Kidwell, G A, Schaal, S F, Muir, 3rd, W W

“…The effect of racemic disopyramide and its enantiomers on the action potential was studied in Tyrodes (4.0 mM KCL)-superfused canine cardiac Purkinje fibers…”
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Negative inotropic effect of lidocaine in patients with coronary arterial disease and normal subjects by Boudoulas, H, Schaal, S F, Lewis, R P, Welch, T G, DeGreen, P, Kates, R E

“…The effect of administration of lidocaine on left ventricular performance was studied using systolic time intervals in nine normal subjects, eight patients…”
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Dissimilar atrial rhythms. A patient with interatrial block by Leier, C V, Schaal, S F

“…A patient with type A Wolff-Parkinson-White syndrome and prolonged interatrial conduction intervals developed atrial flutter during the course of an…”
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Localization of the site of ventricular premature complexes by radionuclide angiographic phase imaging by Bashore, Thomas M., Rasor, Tim, Rolfe, Stephen J., Schaal, Stephen F., Stine, Ronald A., DiBlasio, Gary H., Hatton, Patricia A., Shaffer, Phillip

“…To investigate whether gated radionuclide angiographic phase imaging is useful for visually displaying the origin of ventricular premature complexes (VPCs), 82…”
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Digitalis in the sick sinus syndrome. The effects of digitalis on sinoatrial automaticity and atrioventricular conduction by Engel, T R, Schaal, S F

“…The effect of digitalis in patients with sinoatrial node dysfunction was studied. Atrial pacing studies were performed while His bundle electrograms were…”
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The electrophysiologic effects of upright posture by Hermiller, J B, Walker, S S, Binkley, P F, Kidwell, G, Schaal, S F, Wooley, C F, Stang, J M, Leier, C V

“…In order to determine the effects of upright posture on the electrophysiologic properties of the human heart, 12 patients underwent electrophysiologic studies…”
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Implantable Defibrillators Impedance Measurement Using Pacing Pulses Versus Shock Delivery with Intact and Modified High Voltage Lead System by MEHDIRAD, ALI A., STOHR, ERICH C., LOVE, CHARLES J., NELSON, STEVEN D., SCHAAL, STEPHEN F.

“…At present the only method for measuring the high voltage system lead impedance in patients with an ICD is to deliver a low energy test shock. This is painful,…”
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