The utility of impedance monitoring in refractory reflux patients with primary complaints of chest pain or extraesophageal symptoms is unproven.
在最初抱怨胸痛或者食管外症状的难治反流病人,阻抗检测有效性未得到证实。
2
While fulfilling the qualification of test technique, it can test the voltage, current, time and insulation impedance for 13 kinds of time mechanisms, and has replaced 13 primary test equipments.