Nelson Lynne, Reidesel Elizabeth, Ware Wendy A, Christensen William F
Department of Veterinary Clinical Sciences, Washington State University, Pullman 99164-7060, USA.
J Vet Intern Med. 2002 Jul-Aug;16(4):418-25. doi: 10.1892/0891-6640(2002)016<0418:earcaw>2.3.co;2.
The purpose of this study was to assess the effects of systemic hypertension (SHT) on echocardiographic and radiographic cardiovascular variables in affected cats compared with healthy geriatric cats. Secondary objectives were to determine whether there were any relationships between these findings and age or systolic blood pressure (SBP). Fifteen healthy cats (>8 years of age with normal SBP) and 15 hypertensive cats (SBP > 180 mm Hg) were studied. Each cat was evaluated for standard echocardiographic parameters and 4 different aortic root dimensions. Seventeen variables were measured from right lateral and dorsoventral radiographic views. Left ventricle wall thickness was greater in the SHT group (5.1 +/- 0.9 mm) than in the healthy cats (4.2 +/- 0.5 mm). Left ventricular hypertrophy in the SHT cats often was not severe, and mean measures were considered normal. Some cats had asymmetrical septal hypertrophy (ASH) in the basilar portion of the septum as determined from the 2-dimensional view of the left ventricular outflow tract. ASH was greater in cats with SHT. Comparisons of the proximal ascending aorta indicated the presence of dilatation in the SHT cats, and comparison of the ascending aorta to the aortic annulus was helpful in differentiating between the 2 groups. The distal aortic root measurements and ratios evaluated by echocardiography were significantly different between the 2 groups of cats (P = .0001) and were significantly correlated with SBP (P = .0001) but not age (P > .3).
本研究的目的是评估与健康老年猫相比，全身性高血压（SHT）对患猫超声心动图和放射影像学心血管变量的影响。次要目标是确定这些结果与年龄或收缩压（SBP）之间是否存在任何关系。研究了15只健康猫（年龄>8岁，SBP正常）和15只高血压猫（SBP>180 mmHg）。对每只猫进行标准超声心动图参数和4种不同主动脉根部尺寸的评估。从右侧和背腹位放射影像学视图测量了17个变量。SHT组的左心室壁厚度（5.1±0.9 mm）大于健康猫（4.2±0.5 mm）。SHT猫的左心室肥厚通常不严重，平均测量值被认为是正常的。从左心室流出道的二维视图确定，一些猫在室间隔基部有不对称性室间隔肥厚（ASH）。SHT猫的ASH更明显。升主动脉近端的比较表明SHT猫存在扩张，升主动脉与主动脉瓣环的比较有助于区分两组。两组猫通过超声心动图评估的主动脉根部远端测量值和比率有显著差异（P = 0.0001），并且与SBP显著相关（P = 0.0001），但与年龄无关（P>.3）。
