Bladder volume measurement with electrical impedance analysis in spinal cord-injured patients
Bladder volume measurement with electrical impedance analysis in spinal cord-injured patients
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DOI：
10.1097/00002060-199811000-00009
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发表时间：
1998-11-01
影响因子：
3
通讯作者：
Yoon, H
中科院分区：
文献类型：
--
作者：
Kim, CT;Linsenmeyer, TA;Yoon, H
本文所含研究的目的是确定电阻抗对于测量脊髓损伤患者膀胱容量的有用性，并专门评估电阻抗与膀胱容量之间的关系。该研究是在尿动力学研究期间进行的，以匹配准确的膀胱体积。招募了 13 名脊髓完全损伤的患者。我们使用由一对电流和振幅电极组成的银-氯化银复合电极，以尽量减少表面皮肤阻抗的影响。清洁皮肤后，将每个复合电极贴在双侧下腹部。施加由9V直流电转换而来的恒定电流（60kHz-1.0mA），并在“前”（尿动力学空膀胱之前）、“满”（尿动力学充满膀胱）和“后”（尿动力学空膀胱之后）状态测量相应的电阻抗（欧姆）。所有受试者全状态下的电阻抗明显低于术前和术后状态，差异有统计学意义（P < 0.001）。电阻抗与膀胱体积之间的相关性为负相关（r = -0.7988），并且估计了膀胱体积的变化可以解释多少电阻抗的变化（r(2) = 0.6381）。根据这些发现，我们确定电阻抗分析技术可以作为间接测量膀胱体积的替代方法。
The purpose of the study contained herein was to determine the usefulness of electrical impedance for measurement of bladder volume in spinal cord-injured patients, with an assessment of the relationship between electrical impedance and bladder volume exclusively. The study was performed during urodynamic studies to match the exact bladder volume. Thirteen patients with complete spinal cord injuries were recruited. We used silver-silver chloride compound electrodes composed of one pair of current and amplitude electrodes to minimize the influence of superficial skin impedance. Each compound electrode was attached on the lower abdomen bilaterally after skin cleansing. Constant current (60 kHz-1.0 mA), converted from 9 V of direct current, was applied, and corresponding electrical impedance (Ohm) was measured at "pre" (before urodynamic empty bladder), "full" (with a urodynamic filled bladder), and "post" (after urodynamic empty bladder) status. Electrical impedance at the full status was definitely lower than that at the pre and post statuses in all subjects, with a statistically significant difference (P < 0.001). The correlation between electrical impedance and bladder volume was negative (r = -0.7988), and the fact of how much the variation in electrical impedance could be explained by variation in bladder volume was estimated (r(2) = 0.6381). From these findings, we have determined that the electrical impedance analysis technique can be an alternative measure of bladder volume indirectly.