Objective: to study a new catheter method to measure blood flow of the pulmonary circuit.
目的：研究一种新的导管法测定肺循环血流量。
Objective To study the correct deal method of incarceration of urethral catheter with air sac.
目的：探讨留置气囊导尿管嵌顿后的正确处理方法。
Objective To study the correct deal method of incarceration of urethral catheter with air sac.
目的：探讨留置气囊导尿管嵌顿后的正确处理方法。
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