(n.) An instrument which, when placed in contact with the chest, will register graphically the comparative duration and intensity of the heart's movements.
Example Sentences:
(1) Serial cardiographic studies and determinations of blood imipramine concentrations showed that the heart block was directly related to the plasma concentration of the drug and occurred below the atrioventricular node in the His-Purkinje system.
(2) A Marquette Augmented Cardiograph was used to obtain 12-lead electrocardiogram (ECGs) at baseline and at 3, 10, and 25 minutes after ingestion of 200 or 400 ml ice water.
(3) Apex-carotid diagram (ACD) is a new mechanic-cardiographic method, consisting in integration of carotis-sphygmogram and apex-cardiogram in one diagram.
(4) Several electrical impedance cardiographic and mechanocardiographic methods for assessing left ventricular ejection time (LVET) were compared with the aortic valve LVET echogram to determine whether values from an impedance method allow an exact measurement of LVET.
(5) On volunteers without heart diseases the cardiac output according to the Fick principle, the impedance-cardiographic and sphygmographic method at rest and under pharmacological influence is synchronously measured and statistically compared with the found cardiac output according to Fick.
(6) The thoracic impedance was measured with the Minnesota Impedance Cardiograph Model 304A and the impedance was considered as an expression of the thoracic fluid volume.
(7) Considering the typical course of the complication, the relatively late onset of cyanosis or its increase in heart diseases with primary right-to-left shunt, the X-ray pictures of the thorax depicting a drastic fall of pulmonary flow, and most of all the angio-cardiographic clues for the presence of an intravasal thrombus, it appears, that the correct diagnosis could be made early enough to permit life saving surgery.
(8) The object of this study was to identify vector-cardiographic parameters (VCG) dependant on the size of myocardial infarction and its consequences on segmental left ventricular wall motion.
(9) Colour-coded Doppler echocardiography (Colour Flow Imaging) is a new noninvasive method that offers new perspectives in the cardiographical diagnosis of cardiac defects with regard to diagnostic safety, easily interpreted manner of presentation, and in coping with the complexities of cardiac blood flow.
(10) The characteristic ultrasono-cardiographic (UCG) findings of prolapsed mitral valve were studied in 9 cases by means of ultrasonocardiotomography (UCT).
(11) Cardiographic reflections of fetal movements were assessed using cardiogram synchronous ultrasonic examination in 44 normotrophic and 40 hypotrophic fetuses with body weights less than or equal to 10th percentile.
(12) In a series of studies, cardiac activity, assessed with an impedance cardiograph, was monitored as college students performed either a visual search or pursuit rotor task.
(13) The degree of fetal respiratory and body movements as well as of fetal heart rate reactivity was checked by synchronous ultrasonic and cardiographic monitoring of 18 normotrophic fetuses in the early and late dilation period.
(14) The course includes cardiopulmonary resuscitation, mechanical ventilation, endotracheal intubation, intravenous cannulation, interpretation of certain electro-cardiographic dysrhythmias, synchronized cardioversion, defibrillation and the use of intravenous vasopressors, cardiotonics, and antiarhythmics.
(15) Further data must be obtained by different cardiographic techniques in order to obtain a solid basis for the use of indirect methods, where the electrical model would be helpful as a noninvasive integrative tool in the assessment of the cardiovascular function.
(16) This study used high speed recordings of the electrocardiogram to investigate the cardiographic effects of phenelzine and mianserin and to compare these to the effects of imipramine, amitriptyline, and placebo.
(17) Correlative analysis has also shown several important relationships between rheographic-cardiographic and polycardiographic parameters, which may facilitate the assessment of heart failure.
(18) In our study we measured stroke-volume and cardiac output during and after Ethrane anaesthesia using the IFM-Minnesota Impedance Cardiograph 304 A.
(19) It may be concluded that in order to assure maximal reproducibility, technical characteristics of the apex cardiograph transducer should be taken into account and an optimal recording technique should be used.
(20) Stroke volume (SV), heart rate (HR), and cardiac output (Q) were determined continuously during the exercise by using an automated impedance cardiograph.
Electrocardiograph
Definition:
Example Sentences:
(1) In patients with coronary artery disease, electrocardiographic signs of left atrial enlargement (LAE-negative P wave deflection greater than or equal to 1 mm2 in lead V1) are associated with increased left ventricular end diastolic pressure (LVEDP).
(2) 800 of 993 patients presenting with clinical and electrocardiographic features of acute myocardial infarction up to three hours after the onset of major symptoms.
(3) An improved technique to record high-equality electrocardiographic (ECG) signals on the surface, from immersed humans during rest and exercise, in both normothermic and hypothermic exposures, has been devised.
(4) These findings suggest that pretreatment with intracoronary nifedipine protects the myocardium against some of the mechanical and electrocardiographic consequences of regional ischemia during acute coronary occlusion.
(5) We conclude that: (1) two of the previously proposed criteria for diagnosis of entrainment (fixed fusion on the surface electrocardiogram and a first postpacing interval equal to the paced cycle length) are overly restrictive criteria for definition of "entrainment" of VT, (2) analysis of endocardial recordings from the site of origin of tachycardia during attempted entrainment of VT is useful for documenting the presence of entrainment, and (3) such analysis provides a basis for the understanding of surface electrocardiographic phenomenon associated with entrainment.
(6) Following washout of previous antiarrhythmic treatment, a 48-h ambulatory electrocardiographic (ECG) recording was obtained.
(7) On a series of 170 aortic valve replacement - 100 aortic stenoses (AS) and 70 aortic regurgitations (AR) - with an early post operative death rate of 5.3% and a late one of 8% (with a minimum follow up of 1 year and an average one of 25.4 months, two electrocardiographic and radiological checks could be done on 123 patients, 12 months on an average after the operation, and again for 116 patients, 21 months after the operation.
(8) There were no changes in the clinical, electrocardiographic or echocardiographic findings in the experimental group.
(9) During the electrocardiographic examinations bundle branch block was established, depending on heart rate.
(10) All patients underwent right and left heart catheterization, as well as M-mode and 2D-echocardiography, and 24-hour ambulatory electrocardiographic monitoring.
(11) Present-day data (histological, electrocardiographic, vectorcardiographic and coronarographic) are presented in the paper, forming the concept of quadrifascicular structure of the conduction system of the heart.
(12) Echocardiographic and electrocardiographic infarct localization were in agreement in 93%.
(13) Although commonly subacute in presentation, complications of endocarditis were frequent: arterial emboli in five patients, new electrocardiographic conduction system abnormalities in nine, congestive heart failure in eight, annular or myocardial abscesses in five, and disruption of valve leaflets in three.
(14) Although there was no significant difference in the sensitivity (66 percent) and specificity (100 percent) of electrocardiographic mapping and of the 12 lead system in identifying three vessel disease, there was a significant difference in sensitivity (electrocardiographic mapping 74 percent, 12 lead system 42 percent) in identifying isolated single vessel disease.
(15) Electrocardiographic (ECG) changes, ventricular arrhythmias, metabolic abnormalities and rare reports of myocardial infarction and sudden death further suggest the presence of an ischemic process in these patients.
(16) In patients with ventricular tachycardia with left bundle branch block pattern, the diagnosis of arrhythmogenic right ventricular dysplasia was substantiated by echocardiographic data and electrocardiographic findings such a T-wave inversion during sinus rhythm and ventricular post-excitation waves.
(17) Electrocardiographic criteria employed to diagnose LV hypertrophy included the Sokolow and Lyon index, the Romhilt-Estes voltage criteria, the Romhilt-Estes point score, the ratio of RV6:RV5 greater than 1 proposed by Holt and Spodick, and a method utilizing the sum of the amplitudes of the QRS complexes of all 12 leads.
(18) Thus, the electrocardiographic pattern termed left atrial enlargement appears to represent an interatrial conduction defect that can be produced by a variety of factors.
(19) Analysis of cumulative mortality data following antihypertensive regimens that included high dosages of diuretics revealed an association between electrocardiographic abnormalities at rest and diuretic treatment that related to adverse outcome.
(20) Therefore variation in signal-averaged electrocardiographic measurements was considerable (high-frequency voltage greater than durations).