Noninvasive measurement of isovolumetric contraction time during hypoxemia and acidemia: Fetal lamb validation as an index of cardiac contractility

Early Human Development

Volumn 81, Issue 7, 2005, Pages 635-642

  Yumoto, Yasuo ^a   Satoh, Shoji ^b   Fujita, Yasuyuki ^a   Koga, Tsuyoshi ^a   Kinukawa, Naoko ^b   Nakano, Hitoo ^a  

^a KYUSHU UNIVERSITY   (Japan)

^b KYUSHU UNIVERSITY HOSPITAL   (Japan)

Author keywords

Fetal lamb; Isovolumetric contraction time; Myocardial contractility

Indexed keywords

ACIDEMIA; ARTERIAL OXYGEN TENSION; ARTICLE; COMPARATIVE STUDY; CORRELATION ANALYSIS; FEMALE; FETUS; HEART MUSCLE CONTRACTILITY; HYPOXEMIA; LINEAR REGRESSION ANALYSIS; MEASUREMENT; NONHUMAN; PH; PREGNANCY; STATISTICAL SIGNIFICANCE;

ACIDOSIS; ANIMALS; ANOXEMIA; ECHOCARDIOGRAPHY, DOPPLER; FEMALE; FETAL HEART; FETUS; HYDROGEN-ION CONCENTRATION; MYOCARDIAL CONTRACTION; OXYGEN; PREGNANCY; REFERENCE STANDARDS; SHEEP; TIME FACTORS; ULTRASONOGRAPHY, PRENATAL;

EID: 21844457930     PISSN: 03783782     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.earlhumdev.2005.04.004     Document Type: Article

References (16)

1. A.M. Weissler, W.S. Harris, and C.D. Schoenfeld Systolic time intervals in heart failure in man Circulation 37 1968 149 159
2. C.E. Martin, J.A. Shaver, M.E. Thompson, P.S. Reddy, and J.J. Leonard Direct correlation of external systolic time intervals with internal indices of left ventricular function in man Circulation 44 1971 419 431
3. C.C. Metzger, C.B. Chough, F.W. Kroetz, and J.J. Leonard True isovolumetric contraction time. Its correlation with two external indexes of ventricular performance Am J Cardiol 25 1970 434 442
4. J.M. Simpson, and A. Cook Repeatability of echocardiographic measurements in the human fetus Ultrasound Obstet Gynecol 20 2002 332 339
5. Y. Murata, and C.B. Martin Jr. Systolic time intervals of the fetal cardiac cycle Obstet Gynecol 44 1974 224 232
6. H.P. Robinson, A.H. Adam, J.E. Fleming, A. Houston, and D.M. Clark Fetal electromechanical intervals in labour Br J Obstet Gynaecol 85 1978 172 177
7. T. Koga, N. Athayde, B. Trudinger, and H. Nakano A new and simple Doppler method for measurement of fetal cardiac isovolumetric contraction time Ultrasound Obstet Gynecol 18 2001 264 267
8. T. Koga, N. Athayde, and B. Trudinger A new ultrasound technique to measure the isovolumetric contraction time as an index of cardiac contractility: fetal lamb validation J Soc Gynecol Investig 10 2003 194 199
9. T. Koga, N. Athayde, and B. Trudinger The fetal cardiac isovolumetric contraction time in normal pregnancy and in pregnancy with placental vascular disease: the first clinical report using a new ultrasound technique Br J Obstet Gynaecol 108 2001 179 185
10. W.L. Gleason, and E. Braunwald Studies on the first derivative of the ventricular pressure pulse in man J Clin Invest 41 1962 80 91
11. T. Nakamura BMDP program for piecewise linear regression Comput Methods Programs Biomed 23 1986 53 55
12. Y. Murata, C.B. Martin, T. Ikenoue, and R.H. Petrie Cardiac systolic time intervals in fetal monkeys: pre-ejection period Am J Obstet Gynecol 132 1978 285 293
13. R.S. Comline, I.A. Silver, and M. Silver Factors responsible for the stimulation of the adrenal medulla during asphyxia in the foetal lamb J Physiol 178 1965 211 238
14. L.W. Organ, J.E. Milligan, J.W. Goodwin, and M.J. Bain The pre-ejection period of the fetal heart: response to stress in the term fetal lamb Am J Obstet Gynecol 115 1973 377 386
15. R.I. Cargill, D.G. Kiely, and B.J. Lipworth Left ventricular systolic performance during acute hypoxemia Chest 108 1995 899 902
16. J.C. Fouron, J.S. Lafond, and H. Bard Effects of hypoxemia with and without acidemia on the isometric contraction time and the electromechanical delay of the fetal myocardium: an experimental study on the ovine fetus Am J Obstet Gynecol 162 1990 262 266