Radioelectrocardiography during Exercise in Patients with Angina Pectoris

Bellet, Samuel; Eliakim, M; Deliyiannis, Stavros; Lavan, Donald

doi:10.1161/01.cir.25.1.5

Cited by 42 publications

(7 citation statements)

References 20 publications

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“…(1) It should be safe, (2) should require a limited amount of special equipment, (3) should not be too time consuming, (4) should be adaptable enough in design so that it does not overstress some and understress other cardiac patients, (5) should use a familiar form of exercise, and (6) results should be reproducible.9, [12][13][14] The reproducible association between the exercise work load and the onset of S-T segment depression has been documented by Areskag,12 Burkart and their associates, 13 and others.9' 1 The product of systolic blood pressure multiplied by the pulse rate has been found by others to be even more predictive of the end point in patients with coronary insufficiency.16 It has been our impression that the more severe the disease, the more reproducible the test.…”

Section: Discussionmentioning

confidence: 99%

Maximal Treadmill Stress Testing for Cardiovascular Evaluation

et al. 1969

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SUMMARYExperience with a maximal treadmill stress testing procedure which is relatively safe, simple, and reproducible is reported. It Circulation, Volume XXXIX, April 1969 Peak predicted pulse rates were chosen for detailed analysis. Information as to their previous health was only known for 284 executives previously examined and thought to be normal by history and resting ECG. Many of the remainder were sent for evaluation of known or suspected angina, and many were sent for screening prior to embarking on a physical fitness program. Careful questioning as to symptoms, medication, and previous cardiac disease was done to rule out unstable coronary insufficiency and congestive failure. In the group were 205 females and 795 males with ages varying between 7 and 83 years.No special attempt was made to standardize the time of day or the relationship of the last meal.The patients are prepared by applying gel (Lectrocardiographic Gel) to the Telectrode electrode and affixing these self-adherent electrodes to the upper part of the manubrium sterni and the standard left chest V5 position (CM-5).5 The cable attachments are then snapped to the electrodes and the cable is connected to a directwriting Sanborn electrocardiograph. The electrocardiographic complexes are monitored continually with an oscilloscope. An aneroid sphygmomanometer is placed on the right arm for measurements of blood pressure. A cardiotachometer gives a constant read-out of the heart rate. Oxygen, emergency drugs, and a DC defibrillator are available in the room.Resting electrocardiograms are taken while the patient is sitting and also while standing, before and after hyperventilation, and are used

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Section: Discussionmentioning

confidence: 99%

Maximal Treadmill Stress Testing for Cardiovascular Evaluation

et al. 1969

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“…By this means ischaemic change can be detected immediately, even if unaccompanied by anginal pain, and the exercise terminated (Sandler, 1967). Depression of the ST segment of plane or sagging contour lasting at least 0.08 second, in either the radiocardiogram or the V5, was taken as evidence of myocardial ischaemia (Lloyd-Thomas, 1961 ;Master and Rosenfeld, 1961;Bellet et al, 1962). Junctional depression, when it occurred, was accepted as significant of ischaemia only when the QX/QT ratio exceeded 50% (Master and Rosenfeld, 1961).…”

Section: Methodsmentioning

confidence: 99%

Glyceryl trinitrate in angina pectoris: tablet or aerosol?

Sandler¹,

Clayton²

1967

BMJ

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“…[23][24][25] The following were considered to be "definitely abnormal": (1) ischemiic (flat or downward) ST-segment depression of 1 mim. or more; (2) ST-segment elevation of 1 mm.…”

Section: Methodsmentioning

confidence: 99%

“…The recently introduced radioelectrocardiograph eliminates most of the difficulties of recording electrocardiograms during exercise.18-23 We have previously described the changes that occur during the Master two-step test in normal subjects as well as in patients with hypertensive or arteriosclerotic cardiovascular disease23' 24 and in patients with angina pectoris. 24 Here, are presented the changes that occur in normal individuals during the performance of exercise more strenuous than the Master test.…”

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confidence: 99%

Radioelectrocardiographic Changes during Strenuous Exercise in Normal Subjects

et al. 1962

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The effect of strenuous exercise (riding a stationary bicycle at 20 to 25 mph for 3 minutes) on the electrocardiogram was studied in 135 normal subjects, aged 17 to 64 years. Radioelectrocardiography was used to record the tracings during and after the period of exercise. The following electrocardiographic alterations during exercise were interpreted as representing a normal physiologic response; sinus tachycardia (100 per cent of the cases), increased P-wave amplitude (85 per cent), ST-segment depression of the junction type, 1 mm. or more (75 per cent), diminished (68 per cent) or increased (9 per cent) T-wave amplitude. A few ventricular premature beats were observed in only two subjects (1.4 per cent). All these changes were observed, although less frequently, in the period after exercise (1 minute after the cessation of exercise). According to criteria for abnormality described previously, 23 34 of the 135 subjects (24.8 per cent) exhibited abnormal responses to the bicycle exercise test. Sixteen of the 34 "definitely" and "probably abnormal" responses (47 per cent) occurred only during the period of exercise, 12 were observed both during and after the exercise and six occurred only in the postexercise period. The incidence of abnormalities in the group of subjects in the age group 40 to 64 years was 37 per cent, while that in subjects in the age group 17 to 40 years was 22.5 per cent. A comparison between the Master two-step and the bicycle tests suggests that the latter may be more diagnostic for the detection of latent coronary artery disease and the evaluation of the state of physical fitness in subjects below the age of 40 years.

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Radioelectrocardiography during Exercise in Patients with Angina Pectoris

Abstract: a negative T wave to an upright position, (4) frank inversion of the U wave, (5) widening

Cited by 42 publications

References 20 publications

Maximal Treadmill Stress Testing for Cardiovascular Evaluation

Maximal Treadmill Stress Testing for Cardiovascular Evaluation

Glyceryl trinitrate in angina pectoris: tablet or aerosol?

Radioelectrocardiographic Changes during Strenuous Exercise in Normal Subjects

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