LEFT VENTRICULAR EJECTION TIME MEASURED BY FINGER-TIP PLETHYSMOGRAPHY IN HEALTHY YOUNG JAPANESE ITS CORRECTION FOR HEART RATE
| Autor: | Mototsugu Saishin, Tadashi Kagoshima, Hideo Nonaka, Michiaki Doi, Hyoe Ishikawa, Akira Honjo |
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| Rok vydání: | 1975 |
| Předmět: |
Adult
Male medicine.medical_specialty Time Factors Adolescent Bazett formula Physiology Statistics as Topic Left Ventricular Ejection Time Fingers Asian People Japan Heart Rate Internal medicine Heart rate Humans Ventricular Function Medicine Plethysmograph Young male business.industry Plethysmography Cardiology Female Cardiology and Cardiovascular Medicine business |
| Zdroj: | Japanese Circulation Journal. 39:133-141 |
| ISSN: | 1347-4839 0047-1828 |
| Popis: | Finger-tip plethysmograms were recorded photoelectrically on 200 young males and females each. The relation between the left ventricular ejection time (ET) and the preceding heart rate (HR) and a method for correcting ET for the heart rate were studied. The values calculated by the formula ET/S-S or ET/square root S-S varied with the HR, so these formulae cannot be used for correcting the ET for HR. Thus from the relationship between ET and HR, a formula for converting the measured ET to the ET at an HR OF 70, I.E. ETc, was deduced. ETc equals ET + HR - 70. This formula can be used for both sexes of Japanese juveniles and the values obtained by it can be directly compared, irrespective of the HR. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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