Patent Ductus Arteriosus in the Dog

견(犬)에서의 개방성(開放性) 동맥관(動脈管) 증례(症例)

The ductus arteriosus (Botallo's duct) is a vascular communication between the pulmonary artery near its bifurcation and the aorta distal to the origin of the left subclavian artery. A surgical operation was tried in the shepherd dog which was affected by patent ductus arteriosus. The patient was six months old and weighed about 11kg. Pentobarbital sodium, 26 mg/kg was used intravascularly for the anesthesia. And then a respirator was used for the patient. The thoracotomy incision was made over the fourth intercostal space on the left and the ductus arteriosus was ligated twice. But the patient revealed ventricular fibrillation at three minutes after ligations of ductus arteriosus. So the cardiac massage was done after incision of pericardium and then the defibrillator was used for the defibrillation. But the patient was not recovered without effect. It was considered that if there is complication or cyanosis, the adaptability of surgical operation should be specially considered. Histologically, chronic passive congestion of liver was observed.

충남대학교 부속가축병원에 내원(來院)한 shepherd 견(犬)을 대상으로 임상진단(臨床診斷), 심전도(心電圖) 및 X-ray 검사(檢査)를 실시하여 개방성(開放性) 동맥관(動脈管)으로 진단된 예(例)에 있어서 이를 확인하고 또 치료할 목적(目的)으로 진단적(診斷的) 개흉술(開胸術)을 시도하였다. Pentobarbital sodium을 사용한 마취로 좌측 제(第)4늑간(肋間)에서 개흉(開胸)하여 동맥관(動脈管) 이중결찰법(二重結紮法)으로 시술(施術)하였다. 시술결과(施術結果)는 개방성(開放性) 동맥관(動脈管)의 결찰 3 분준(分俊)에 심실세동(心室細動)이 발생하였기에 defibrillator 로 제세동(除細動)을 실시하였으나 효과(效果)없이 회복하지 못하였다. 합병증이나 cyanosis가 있을 경우에는 수술적합성 여부를 신중히 고려하여야 될 것으로 생각된다. 조직학적(組織學的) 소견(所見)으로는 간(肝)의 만성(慢性) 수동성(受動性) 충혈소견(充血所見)이 인정(認定)되었다.