Stewart J H, Rose R J, Barko A M
Equine Vet J. 1984 Jul;16(4):332-41. doi: 10.1111/j.2042-3306.1984.tb01938.x.
Simultaneous echocardiograms, phonocardiograms and electrocardiograms were performed on 16 foals at the following times after birth: 15 mins, 60 mins, 2, 4, 12, 24, 48 h, four, seven, 14 days and four, eight and 12 weeks. Positive correlations were found between both age and body weight and the following measurements: left ventricular end-diastolic dimension, right ventricular end-diastolic dimension, left atrial dimension and aortic root dimension, posterior left ventricular wall thickness and interventricular septal thickness. Heart rate was negatively correlated with left ventricular electromechanical systole, ejection time and isovolumic contraction time. Means and standard deviations are presented for 29 echocardiographic parameters and the results are discussed against the background of the transitional neonatal circulation.
对16匹新生马驹在出生后的以下时间点同时进行了超声心动图、心音图和心电图检查：出生后15分钟、60分钟、2小时、4小时、12小时、24小时、48小时、4天、7天、14天以及4周、8周和12周。发现年龄和体重与以下测量值之间存在正相关：左心室舒张末期内径、右心室舒张末期内径、左心房内径和主动脉根部内径、左心室后壁厚度和室间隔厚度。心率与左心室机电收缩期、射血时间和等容收缩时间呈负相关。给出了29个超声心动图参数的均值和标准差，并结合新生儿循环过渡的背景对结果进行了讨论。
