Ambulatory Electrocardiography
Mostrando 13-22 de 22 artigos, teses e dissertações.
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13. Ambulatory electrocardiography in squash players.
Ambulatory electrocardiography was carried out in 21 healthy, fit, male squash players (aged 23-43 years) before, during, and after match play. Resulting electrocardiograms were analysed with respect to heart rate and changes in rhythm. The results indicate that squash increases the heart rate to 80% of an individual's predicted maximum heart rate for the du
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14. Electrocardiographic findings in male veteran endurance athletes.
Twenty male veteran endurance runners and 20 controls underwent resting, exercise, and ambulatory electrocardiography. Four athletes and three controls satisfied voltage criteria for left ventricular hypertrophy. The PR interval was longer in the athletes and they had longer mean (SD) treadmill exercise times (19 (4) v 16 (2) min) than the controls. Four ath
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15. Symptomatic and silent myocardial ischaemia in hypertensive patients with left ventricular hypertrophy.
OBJECTIVE--To assess the prevalence of symptomatic and silent myocardial ischaemia in patients with hypertensive left ventricular hypertrophy. DESIGN--Cross sectional study. SETTING--University department of medical cardiology. PATIENTS--90 patients (68 men and 22 women; mean age 57 (range 25 to 79)) with left ventricular hypertrophy due to essential hyperte
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16. Ambulatory electrocardiography in car workers.
A previous study in a car assembly plant showed that production-line workers had a lower incidence rate of heart attacks than executive staff. In the present study some major coronary risk factors and 24-hour ambulatory electrocardiograms were investigated in two age-matched samples of 30 middle-aged men drawn from these occupations. Men with a known history
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17. Cardiac asystole associated with epileptic seizures: a case report with simultaneous EEG and ECG.
Cardiac arrhythmias occurring in association with epileptic seizures are a potential source of diagnostic confusion and a possible cause of sudden unexpected death in epilepsy. A case is described in which simultaneous ambulatory electroencephalography and electrocardiography revealed periods of asystole coinciding with epileptic seizures. The aystole appear
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18. Permanent pacing after cardiac transplantation.
OBJECTIVE--To determine the need for long-term pacing and optimum mode of pacing in cardiac transplant recipients. DESIGN--(a) A retrospective review of patient records. (b) A prospective study of pacemaker use by 24 hour ambulatory electrocardiography before and after reprogramming to minimise use of pacemakers. SETTING--Outpatient clinic, supra-regional ca
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19. 48-hour ambulatory electrocardiography in dynamite workers and controls
ABSTRACT Sudden deaths and chronic cardiovascular diseases have been reported in excess frequency from the explosives industry. Forty-two active dynamite workers and 43 healthy, unexposed workers have been studied by ambulatory electrocardiographic monitoring during two 24-hour periods covering an exposed shift and the “abstinence phase,” 40-64 hours aft
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20. Cardiac involvement in tuberous sclerosis.
OBJECTIVE--To assess the incidence, importance, and history of cardiac involvement in infants and children with tuberous sclerosis. DESIGN--Prospective study; clinical examination, sector and Doppler echocardiography, standard and ambulatory electrocardiography. SETTING--A tertiary referral centre. PATIENTS--21 patients with tuberous sclerosis aged 1 day to
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21. Effect of oral aminophylline in patients with angina and normal coronary arteriograms (cardiac syndrome X).
BACKGROUND: Patients with syndrome X (exertional angina, positive exercise test, normal coronary arteriogram) have an altered perception of cardiac pain. This symptom may arise from increased sensitivity to adenosine. Previous studies suggest that intravenous aminophylline (an adenosine receptor blocker) improves exercise tolerance in patients with this diso
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22. Value of the bipolar lead CM5 in electrocardiography.
Only bipolar lead recording are available during ambulatory monitoring. Their sensitivity in detecting ST segment changes in relation to standard electrocardiographic leads is not known. The magnitude and direction of ST segment changes in the bipolar lead CM5 were compared with those in standard electrocardiographic leads in patients during exercise testing