Application of the Mechanocardiopolygram in Cattle

Tohru KURITA; Takeshi SATO; Daishi OKADA; Hidekazu KOYAMA; Setsuo MITANI; Tomiya UCHINO; Shigekatsu MOTOYOSHI

doi:10.11276/jsvc1984.19.38

Tohru KURITA, Takeshi SATO, Daishi OKADA, Hidekazu KOYAMA, Setsuo MITANI, Tomiya UCHINO, Shigekatsu MOTOYOSHI

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JOURNAL FREE ACCESS

1986 Volume 19 Issue 19 Pages 38-44

DOI https://doi.org/10.11276/jsvc1984.19.38

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Published: 1986 Received: - Available on J-STAGE: September 17, 2009 Accepted: - Advance online publication: - Revised: -
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Date of correction: September 17, 2009 Reason for correction: - Correction: ABSTRACT Details: Wrong : A Mechanocardiogrphic polygram (MCG) was recorded from 19 normal heifers and 21 dairy cows. Carotid arterial pulse (CAP) wave pattern and left ventricular systolic time intervals (STI) were studied.
1) The wave form of CAP in cattle was similar to that in human beings. All the important points (points of change in curve) were clearly demonstrated on the CAP.
2) There was a significant correlation (r=0.99, n=8) in the ejection time (ET) between the pulse waves recorded from MCG and CAP.
3) There was a high inverse relation between the heart rate and the electromechanical systole (Q II a)or ET which made it possible to calculate a QII a index (QIIal) or ET index (ETI). The pre-ejection period (PEP) and the ejection index (ET/PEP) were reliable indices, because they were free from influence of the heart rate.
4) Comparison was made on QII aI, ETI, PEP and ET/PEP between the normal heifers and the dairy cows. ETI was significantly longer, PEP significantly shorter, and ET/PEP significantly higher in the latter than in the former.
Right : A Mechanocardiogrphic polygram (MCG) was recorded from 19 normal heifers and 21 dairy cows. Carotid arterial pulse (CAP) wave pattern and left ventricular systolic time intervals (STI) were studied.
1) The wave form of CAP in cattle was similar to that in human beings. All the important points (points of change in curve) were clearly demonstrated on the CAP.
2) There was a significant correlation (r=0.99, n=8) in the ejection time (ET) between the pulse waves recorded from MCG and CAP.
3) There was a high inverse relation between the heart rate and the electromechanical systole (QIIa) or ET which made it possible to calculate a QIIa index (QIIal) or ET index (ETI). The pre-ejection period (PEP) and the ejection index (ET/PEP) were reliable indices, because they were free from influence of the heart rate.
4) Comparison was made on QII aI, ETI, PEP and ET/PEP between the normal heifers and the dairy cows. ETI was significantly longer, PEP significantly shorter, and ET/PEP significantly higher in the latter than in the former.

Date of correction: September 17, 2009 Reason for correction: - Correction: AFFILIATION Details: [in Japanese]

Date of correction: September 17, 2009 Reason for correction: - Correction: CITATION Details: [in Japanese]

Abstract

A Mechanocardiogrphic polygram (MCG) was recorded from 19 normal heifers and 21 dairy cows. Carotid arterial pulse (CAP) wave pattern and left ventricular systolic time intervals (STI) were studied.
1) The wave form of CAP in cattle was similar to that in human beings. All the important points (points of change in curve) were clearly demonstrated on the CAP.
2) There was a significant correlation (r=0.99, n=8) in the ejection time (ET) between the pulse waves recorded from MCG and CAP.
3) There was a high inverse relation between the heart rate and the electromechanical systole (QIIa) or ET which made it possible to calculate a QIIa index (QIIal) or ET index (ETI). The pre-ejection period (PEP) and the ejection index (ET/PEP) were reliable indices, because they were free from influence of the heart rate.
4) Comparison was made on QII aI, ETI, PEP and ET/PEP between the normal heifers and the dairy cows. ETI was significantly longer, PEP significantly shorter, and ET/PEP significantly higher in the latter than in the former.

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