The Meal Test in Clinical Electrocardiography

Abstract

The fact theat all ordinary Illeal induces (definite Two criteria were used for differentiation bet\-een a normal and abnormal response of the electrocardiogram to a meal: the response wras considered to be abnormal (1) when, according to accepted standards,14 it was normal or borderline before the meal but abnormal after the meal;(2) when the changes exceeded the expectancy range for 98 per cent of the normal population.13In normal subjects it was found that the changes of CF4 or V4 were very similar,"3 so that the normal standards for V4 may also be applied for CF4.Patients. All patients were ambulatory and in a state of apparent compensation at the time of the test. Most of them were between 40 and 60 years of age. About half of the patients (45) were members of a large experimental group of 500 subjects presently under study of this Laboratory l5 In 29 patients, the electrocardiograms were the only abnormal (or borderline) findings of a thorough physiologic and clinical examination. Thus, the majority of our patients were in an incipient phase of cardiovascular degeneration, except a group of 23 patients with diagnosed corona'y insufficiency,.The patients were grouped into six major categories: (I) Suspected coronary insufficiency (16 pa-

Non-invasive method for blood glucose monitoring using ECG signal

“…According to studies, a decrease in T wave amplitude occurs commonly within half an hour of eating. [54][55] The same T wave amplitude behavior occurred throughout the exercises. 56 It has been established that low potassium levels can result in T-wave flattening.…”

“…In comparison to night hypoglycemia, diurnal hypoglycemia can be affected by several hormonal counterregulation components. 53 Other factors that can affect T wave amplitude morphology such as meals 54-55 , exercise 55-56 or medications 54 . According to studies, a decrease in T wave amplitude occurs commonly within half an hour of eating.…”

Russian Research on the Role of Visceral Reflexes in Coronary Insufficiency

“…In acute myoeardial inifarctioni, astroinitestin-ial syinptoms were present in the mnajority of patientsj" alid in one third of all Since meal intake includes imechanical as well as chemical gastroi it estinal stimulation the reflex meclanismys investigated by Ganielina navy well be inv-olved in the electrocardiographic ehang-es after meals,26 and particularlv in the abnormal response in a substantial percentage of patienits witlh coronar artery disease.21 As a diagnostic lest the meal test appears to be superior to Gaitlina's mustard test, because of the availabilitv of a larger, statisticaliv analyzedl conitrol g-rOUp2" and the more pronounced electrocardiographic changes in a positive nieal test. 24 Ganeli,iia however, was primarily concerned with the meehanism involved and its significance in coronary insufficiency and myocardial infarction.…”