Davainis Grace M, Meurs Kathryn M, Wright Nicola A
Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio 43210, USA.
J Am Anim Hosp Assoc. 2004 Jan-Feb;40(1):20-3. doi: 10.5326/0400020.
Electrocardiograms (ECG) from 35 dogs with subvalvular aortic stenosis (SAS) with a left ventricular outflow tract pressure gradient (PG) of > or =50 mm Hg were retrospectively evaluated for S-T segment depression (STD, > or =0.2 mV in lead II). Pressure gradient, age, heart rate (HR), and number of ventricular premature complexes (VPCs) on a 24-hour ambulatory ECG for dogs with STD were not significantly different from those for dogs without STD. The S-T segment deviation did not correlate significantly with PG, age, HR, or VPCs. The significance of STD in the dog with SAS remains uncertain. Long-term prospective studies are needed to fully understand this observation.
对35只患有瓣下主动脉狭窄（SAS）且左心室流出道压力阶差（PG）≥50mmHg的犬的心电图（ECG）进行回顾性评估，以观察ST段压低（STD，II导联中≥0.2mV）情况。患有STD的犬的压力阶差、年龄、心率（HR）以及24小时动态心电图上室性早搏复合体（VPC）的数量与未患STD的犬相比，并无显著差异。ST段偏移与PG、年龄、HR或VPC均无显著相关性。SAS犬中STD的意义仍不明确。需要进行长期前瞻性研究以充分理解这一观察结果。
