Determination of Quantitative Left Ventricular Function by M-mode Echocardiography Together with Other Noninvasive Parameters
M-mode echocardiography, which was first introduced in cardiology in order to identify valve disease, has since been shown to be very useful for studying left ventricular (LV) function. The advantage of this method is its noninvasive nature and therefore its suitability for sequential studies in the same patient. Due to its high repetition rate in comparison with angiography and radionuclide techniques, M-mode echocardiography allows a detailed analysis of the dynamic changes in LV dimension and wall thickness within one cardiac cycle. In order to take full advantage of the high repetition rate of this technique for LV dimension analysis, echocardiograms must be digitized. Computer analysis of the M-mode echocardiogram then enables continuous computation of a number of variables throughout one cycle and hence the possibility of following LV cavity dimension, and its rate of change, during systole and diastole. It is also possible to analyse wall thickness changes of the septum and of the left ventricular posterior wall, which is not possible using any other technique.
KeywordsLeft Ventricle Mitral Valve High Repetition Rate Left Ventricular Dimension Left Ventricular Wall Movement
Unable to display preview. Download preview PDF.
- 3.Roelandt J, W Walsh, PG Hugenholtz: Advantages of combined hemodynamic and ultrasonic studies in man. In: Echocardiology (Bom N, ed.), p. 95. Martinus Nijhoff, The Hague, 1977.Google Scholar
- 4.Hanrath P: Abnormal LV relaxation and filling patterns. In: Echocardiology ( Lancée ChT, ed.), Martinus Nijhoff, The Hague, 1979.Google Scholar
- 6.Upton MT, DG Gibson: The study of left ventricular function from digitized echocardiograms. Progress in Cardiovasc. Diseases 20: 314, 1978.Google Scholar
- 7.Hirschfield S, J Lietman, G Boshat, C Borsmith: Intracardiac pressure-sound correlates of echographic aortic valve closure. Circulation 55: 602, 1977.Google Scholar
- 12.Mensing H, P Kremer, P Hanrath, M Matsumoto, D Mathey, W Bleifeld, WM Meigel: Detection of cardiac involvement in patients with scleroderma by M-mode echocardiography. Transactions of the European Congress of Cardiology p 112, 1980.Google Scholar
- 14.Sutton John MGSt, AY Olukotun, AJ Tajik, JL Lorett, ER Giulani: Left ventricular function in Friedrich’s ataxia. An echocardiographical study. Br Heart J 44: 399, 1980.Google Scholar
- 16.Bonow RO, DR Rosing, StL Bacharach, MV Green, KM Kent, LC Lipson, JC Condt, MB Leon, StE Epstein: Left ventricular systolic function and diastolic filling in patients with hypertrophic cardiomyopathy: effect of Verapamil. (abstr.) Circulation Suppl II, 62:III-317Google Scholar
- 17.Hanrath P, P Kremer: The effect of Verapamil on abnormal left ventricular diatolic performance in patients with secondary left ventricular hypertrophy due to hypertension. International Symposium on Calcium Antagonisms in Cardiovascular Therapy. Experiences with Verapamil. Florence, Italy October 2–4, Excerpta Medica (In Press).Google Scholar
- 20.Kremer P, P Hanrath, BA Langenstein, M Matsumoto, C Tams, W Bleifeld: The evaluation of left ventricular function at rest and during exercise by transesophageal echocardiography in aortic insufficiency. Am J 47-II: 412, 1981.Google Scholar