Pre- and post-operative cardiac evaluation of dogs undergoing lobectomy and pneumonectomy |
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| Authors: | Meri? Kocatürk Hakan Salci Zeki Yilmaz A Sami Bayram J?rgen Koch |
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| Institution: | 1Department of Internal Medicine, Faculty of Veterinary Medicine, Uludag University, Bursa, Turkey.;2Department of Surgery, Faculty of Veterinary Medicine, Uludag University, Bursa, Turkey.;3Department of Thorax Surgery, Faculty of Medicine, Uludag University, Bursa, Turkey.;4Department of Small Animal Clinical Sciences, Faculty of Life Sciences, University of Copenhagen, Copenhagen, Denmark. |
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| Abstract: | This study aimed to assess the influence of lobectomy and pneumonectomy on cardiac rhythm and on the dimensions and function of the right-side of the heart. Twelve dogs undergoing lobectomy and eight dogs undergoing pneumonectomy were evaluated preoperatively and one month postoperatively with electrocardiography and Doppler echocardiography at rest. Pulmonary artery systolic pressure (PASP) was estimated by the tricuspid regurgitation jet (TRJ) via the pulse wave Doppler velocity method. Systemic inflammatory response syndrome criteria (SIRS) were also evaluated based on the clinical and hematological findings in response to lobectomy and pneumonectomy. Following lobectomy and pneumonectomy, we predominantly detected atrial fibrillation and varying degrees of atrioventricular block (AVB). Dogs that died within seven days of the lobectomy (n = 2) or pneumonectomy (n = 1) had complete AVB. Preoperative right atrial, right ventricular, and pulmonary artery dimensions increased gradually during the 30 days (p<0.05) following pneumonectomy, but did not undergo significant changes during that same period after lobectomy. Mean PASP was 56.0 ± 4.5 mmHg in dogs having significant TRJ after pneumonectomy. Pneumonectomy, but not lobectomy, could lead to increases (p<0.01) in the SIRS score within the first day post-surgery. In brief, it is important to conduct pre- and postoperative cardiac evaluation of dogs undergoing lung resections because cardiac problems are a common postoperative complication after such surgeries. In particular, complete AVB should be considered a life-threatening complication after pneumonectomy and lobectomy. In addition, pneumonectomy appears to increase the likelihood of pulmonary hypertension development in dogs. |
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| Keywords: | dog heart function lobectomy pneumonectomy pulmonary hypertension |
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