Lemola Kristina, Yamada Elina, Jagasia Dinesh, Kerber Richard E
Cardiology Division, Department of Internal Medicine, University of Iowa Hospitals, Iowa City, Iowa, USA.
Echocardiography. 2003 May;20(4):309-12. doi: 10.1046/j.1540-8175.2003.03035.x.
A hand-carried personal ultrasound device (HCPUD) may be used for rapid cardiac screening by physicians with limited echo training. Our objective was to determine the accuracy of rapid HCPUD evaluation of left ventricular (LV) size and function when used by a Cardiology Fellow. Forty-five patients underwent an HCPUD exam using a 2.4-kg device with a 2- to 4-MHz curved transducer and color power Doppler (SonoSite). The results were compared with sonographer-performed and echocardiographer-interpreted exams using conventional equipment. The HCPUD exam lasted 6 +/- 2 minutes. There was 100% agreement between HCPUD and conventional echo on qualitative assessment of LV systolic function. Comparing the HCPUD and conventional linear measurements of left ventricular end-diastolic dimension (LVEDD) and of interventricular septal (IVS) thickness: LVEDD is HCPUD = 0.94 conventional -0.2,r = 0.82, P < 0.0001; IVS is HCPUD= 0.59 conventional+0.6, r = 0.69, P < 0.0001. Thus, an HCPUD can effectively be used after limited training to rapidly screen for qualitative abnormalities of LV systolic function. Quantitative measurements of smaller structures with the HCPUD are more challenging.
一种手持式个人超声设备（HCPUD）可被接受有限超声心动图培训的医生用于快速心脏筛查。我们的目的是确定心脏病专科住院医师使用HCPUD快速评估左心室（LV）大小和功能的准确性。45名患者使用一台重2.4千克、配备2至4兆赫弯形探头和彩色能量多普勒的设备（SonoSite）接受了HCPUD检查。将结果与超声检查技师操作并由超声心动图医生解读的、使用传统设备的检查结果进行比较。HCPUD检查持续6±2分钟。在对左心室收缩功能的定性评估方面，HCPUD与传统超声心动图检查结果的一致性为100%。比较HCPUD与传统超声心动图对左心室舒张末期内径（LVEDD）和室间隔（IVS）厚度的线性测量结果：LVEDD方面，HCPUD测量值 = 0.94×传统测量值 - 0.2，r = 0.82，P < 0.0001；IVS方面，HCPUD测量值 = 0.59×传统测量值 + 0.6，r = 0.69，P < 0.0001。因此，经过有限培训后，HCPUD可有效用于快速筛查左心室收缩功能的定性异常。使用HCPUD对较小结构进行定量测量更具挑战性。
