Prävalenz von Herzgeräuschen, Aorten- und Pulmonalstenosen bei Zuchtuntersuchungen von Boxern in der Schweiz

Abstract

Boxer are predisposed to subaortic (SAS) and pulmonic stenosis (PS). To decrease the prevalence, pre-breeding cardiologic exams were performed in the last years. In our study the results of 309 pre-breeding exams of boxers presented between 1999 and 2008 were evaluated retrospectively. The overall prevalence of heart murmurs was 26.5 %. A SAS was diagnosed in 25 (8.1 %) and a PS in 10 (3.3 %) dogs. A combination of both defects was found in 7 (2.3 %) Boxers. Animals with a heart murmur of at least grade 3/6 had a significantly higher peak aortic flow velocity (VmaxAo) than animals without or only soft heart murmurs. Over the study period both the frequency of heart murmurs and diagnosis of SAS and PS decreased. Boxer are predisposed to subaortic (SAS) and pulmonic stenosis (PS). To decrease 34 the prevalence, pre-breeding cardiologic exams were performed in the last years. In 35 2 our study the results of 309 pre-breeding exams of boxers presented between 1999 36 and 2008 were evaluated retrospectively. The overall prevalence of heart murmurs 37 was 26.5 %. A SAS was diagnosed in 25 (8.1 %) and a PS in 10 (3.3 %) dogs. A 38 combination of both defects was found in 7 (2.3 %) Boxers. Animals with a heart 39 murmur of at least grade 3/6 had a significantly higher peak aortic flow velocity 40 (VmaxAo) than animals without or only soft heart murmurs. Over the study period 41 both the frequency of heart murmurs and diagnosis of SAS and PS decreased. 42 43 Keywords 44Boxer, heart murmur, aortic stenosis, pulmonic stenosis, pre-breeding exam 45 46 Einführung 47