Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Comparative Evaluation of Cardiac Output using Echocardiography in Beagle Dogs

비글견에서 심초음파를 이용한 심박출량 측정에 관한 비교 연구

  • Park, Kitae (Research Institute of Life Sciences, College of Veterinary Medicine, Gyeongsang National University) ;
  • Yeon, Seongchan (Research Institute of Life Sciences, College of Veterinary Medicine, Gyeongsang National University) ;
  • Lee, Heechun (Research Institute of Life Sciences, College of Veterinary Medicine, Gyeongsang National University)
  • 박기태 (경상대학교 생명과학연구원) ;
  • 연성찬 (경상대학교 생명과학연구원) ;
  • 이희천 (경상대학교 생명과학연구원)
  • Accepted : 2012.10.17
  • Published : 2012.10.31
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Abstract

Echocardiographic measurements of cardiac output, including the modified Simpson's method, Automated Contour Tracking(ACT) method, and left ventricular outflow method are well described methods of evaluating cardiac function due to its reliability and the benefits of its non-invasive technique in human medicine. The purpose of this study was to evaluate the accuracy of an echocardiography estimate of cardiac output in isoflurane-anesthetized beagle dogs and was to compare the ACT method to the other methods used in measurement of cardiac output. In healthy beagle dogs, cardiac output results by echocardiography estimate methods showed an excellent correlations with those by the thermodilution method (The modified Simpson's method : r = 0.815, $r^2=0.665$, y = 0.434x + 0.311 ; ACT method : r = 0.86, $r^2=0.748$, y = 0.391x + 0.242 ; ventricular outflow method : r = 0.691, $r^2=0.478$, y = 0.593x + 0.242). Among the results obtained, the ACT method showed the highest correlation coefficient. In conclusion, our study demonstrated that echocardiography estimate methods did not prove to be suitable in accurately measuring absolute cardiac output values but showed an excellent correlation with thermodilution method. Therefore, by using the measurement of cardiac output as supplemental data, echocardiography estimate methods can be used for detection and correction of hemodynamic disturbances during emergency and anesthesia in veterinary practice.

본 연구는 심초음파를 이용한 심박출량 측정의 정확성을 평가하고, 수의학에서 심박출량 측정을 위해 처음 적용되는 Automated Contour Tracking method (ACT method)와 다른 심초음파 측정 방법간의 비교를 위한 목적으로 실시되었다. 따라서 본 연구에서는 흡입마취된 비글견에서 심초음파를 이용한 세가지 심박출량 측정 방법 (modified Simpson's method, left ventricular outflow method 그리고 ACT method)과 절대적 표준법으로 사용되어 오고 있는 열희석법의 성적을 비교 분석하였다. 결과의 검정은 피어슨 상관계수와 선형 회귀 분석법을 사용하였다. 실험에 사용된 실험견은 심혈관계 및 전신상태에 이상이 없는 10마리 비글견이며 호흡마취 유도하에 평가가 실시되었다. 실험은 심초음파법으로 측정한 다음 연이어 열희석법으로 측정하는 순서로 진행되었다. 세 가지 심초음파 측정법들은 모두 열 희석법과 유의적인 상관관계(p < 0.05)에 있음을 알 수 있었고 특히, 세 가지 방법 중에서는 ACT method에서 상관관계가 가장 높음을 확인할 수 있었다. 본 실험에서 심초음파를 이용한 심박출량 측정법은 절대적인 심박출량을 제시하지 못하였다. 하지만 심박출량 측정의 절대적 표준법으로 사용되는 열희석법과 유의적인 상관관계가 있음이 확인 되었으므로 심박출량의 간접적인 정보로 활용함으로써 환자의 마취시에 발생할 수 있는 혈역학적 장애의 발견이나 교정을 위해서 유용하게 사용될 수 있음을 확인하였다.

Keywords

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