Pistolesi M, Milne E N, Miniati M, Giuntini C
Radiology. 1984 Jul;152(1):9-17. doi: 10.1148/radiology.152.1.6729142.
To establish the value of the chest radiograph in assessing the hemodynamic status of the systemic circulation, the vascular pedicle width ( VPW ) and vena azygos width (AW) were correlated with total blood volume (TBV) and other parameters in 61 cardiac patients. In both ischemic and valvular cardiac disease a highly significant linear correlation was found between VPW and TBV (r = 0.80, p less than 0.001). In patients with dilated neck veins VPW was greater than 62 mm (normal 48 +/- 5 mm). A less significant correlation was found between VPW and mean right atrial pressure ( MRAP ). Change in VPW correlated strongly (r = 0.93, p less than 0.001) with change in TBV (0.5-cm change in VPW = 1.0-liter change in TBV). Correlation between AW and TBV was poor (r = 0.50, p less than 0.01), but between AW and MRAP the correlation was stronger (r = 0.74, p less than 0.001). Changes in AW usually occurred in the same direction as changes in MRAP , but the correlation was not significant (r = 0.45). VPW and AW did not correlate with pulmonary blood volume, pulmonary arterial pressure, stroke volume, or heart rate. Radiologic assessment of VPW and AW adds an additional clinically useful dimension to the evaluation of cardiac disease.
为确定胸部X线片在评估体循环血流动力学状态中的价值，对61例心脏病患者的血管蒂宽度（VPW）和奇静脉宽度（AW）与总血容量（TBV）及其他参数进行了相关性研究。在缺血性和瓣膜性心脏病中，均发现VPW与TBV之间存在高度显著的线性相关性（r = 0.80，p < 0.001）。颈静脉扩张的患者VPW大于62 mm（正常为48±5 mm）。VPW与平均右心房压（MRAP）之间的相关性较弱。VPW的变化与TBV的变化密切相关（r = 0.93，p < 0.001）（VPW每变化0.5 cm = TBV变化1.0升）。AW与TBV之间的相关性较差（r = 0.50，p < 0.01），但AW与MRAP之间的相关性较强（r = 0.74，p < 0.001）。AW的变化通常与MRAP的变化方向相同，但相关性不显著（r = 0.45）。VPW和AW与肺血容量、肺动脉压、每搏量或心率均无相关性。对VPW和AW进行放射学评估为心脏病的评估增加了一个额外的临床有用维度。
