Results 111 to 120 of about 19,806 (155)
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2001
The pacemaker current If of the sinoatrial node (SAN) is a major determinant of cardiac diastolic depolarization and plays a key role in controlling heart rate and its modulation by neurotransmitters. Substantial expression of two different mRNAs (HCN4, HCN1) of the family of pacemaker channels (HCN) is found in rabbit SAN, suggesting that the native ...
D. DiFrancesco +3 more
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The pacemaker current If of the sinoatrial node (SAN) is a major determinant of cardiac diastolic depolarization and plays a key role in controlling heart rate and its modulation by neurotransmitters. Substantial expression of two different mRNAs (HCN4, HCN1) of the family of pacemaker channels (HCN) is found in rabbit SAN, suggesting that the native ...
D. DiFrancesco +3 more
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Medical & Biological Engineering, 1971
A cardiac pacemaker model is described based on a close approximation of the properties of cardiac pacemaker cells. It is a minimum-parameter model which has a simple relaxation oscillator circuit as its main element. The pacemaker model is analyzed in detail in order to show that its behaviour is similar to that of cardiac pacemaker cells.
F A, Roberge, P, Bhéreur, R A, Nadeau
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A cardiac pacemaker model is described based on a close approximation of the properties of cardiac pacemaker cells. It is a minimum-parameter model which has a simple relaxation oscillator circuit as its main element. The pacemaker model is analyzed in detail in order to show that its behaviour is similar to that of cardiac pacemaker cells.
F A, Roberge, P, Bhéreur, R A, Nadeau
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Electrosurgery and cardiac pacemakers
Journal of the American Academy of Dermatology, 1983There are two basic types of cardiac pacemakers: (1) Fixed-rate pacemakers stimulate the heart at a regular rate independent of the intrinsic heart rate. (2) Demand pacemakers sense the heart's spontaneous rhythm. They are more commonly used because they are noncompetitive with the heart.
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An appraisal of cardiac pacemaking
Irish Journal of Medical Science, 1969The origins of the concept and the historical developments of electrical pacing of the heart have been traced.
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Rechargeable Cardiac Pacemaker
Postgraduate Medicine, 1973A modified space satellite power cell is the rechargeable power source for a new cardiac pacemaker that should last 20 years.
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JAMA: The Journal of the American Medical Association, 1973
To the Editor.— I would question the medical wisdom of having patients use a magnet at home to change their demand pacemaker to the fixed rate (222:1379, 1972). The first time a physician encounters a ventricular fibrillation in a patient and the patient dies, he is going to be liable not only for wrongful death, but for punitive damages, because of ...
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To the Editor.— I would question the medical wisdom of having patients use a magnet at home to change their demand pacemaker to the fixed rate (222:1379, 1972). The first time a physician encounters a ventricular fibrillation in a patient and the patient dies, he is going to be liable not only for wrongful death, but for punitive damages, because of ...
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IMPLANTABLE CARDIAC PACEMAKERS*
Annals of the New York Academy of Sciences, 1964P M, ZOLL, H A, FRANK, A J, LINENTHAL
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THE RADIOLOGY OF CARDIAC PACEMAKERS
Radiologic Clinics of North America, 1971W M, Hall, H D, Rosenbaum
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