Currently, the gold standard method to estimate CO in patients with PAH or RV dysfunction is pulmonary artery catheter (PAC), however, the invasiveness and complexity of PAC has limited its usefulness in many clinical scenarios. By measuring the thoracic electrical bioimpedance, electrical cardiometry (EC) technique has been reported to noninvasively estimate cardiac output (CO) and other parameters related to cardiac contractility and fluid status in various cardiovascular disorders. However, in patients with pulmonary arterial hypertension (PAH) and/or right ventricular (RV) dysfunction, few study has been reported. The aim of this study is to evaluate the agreement between CO measured by PAC as the referenced method and CO measured by EC technique in patients with PAH and/or RV dysfunction.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
199
transfer a patient from semi-recumbent position to supine position with a 45° leg lifting
infusion dobutamine
nitric oxide inhalation
Zhongshan hospital Fudan University
Shanghai, Shanghai Municipality, China
RECRUITINGcardiac output by pulmonary artery catheter
measuring cardiac output using pulmonary artery catheter
Time frame: 5minutes after the patients was sedated
cardiac output by electrical cardiometry
measuring cardiac output using electrical cardiometry
Time frame: 5minutes after the patients was sedated
cardiac output by pulmonary artery catheter
measuring cardiac output using pulmonary artery catheter
Time frame: 2 minutes after passive leg raising
cardiac output by electrical cardiometry
measuring cardiac output using electrical cardiometry
Time frame: 2 minutes after passive leg raising
cardiac output by pulmonary artery catheter
measuring cardiac output using pulmonary artery catheter
Time frame: 15 minutes after termination of passive leg raising
cardiac output by electrical cardiometry
measuring cardiac output using electrical cardiometry
Time frame: 15 minutes after termination of passive leg raising
cardiac output by pulmonary artery catheter
measuring cardiac output using pulmonary artery catheter
Time frame: 30 minutes after dobutamine infusion
cardiac output by electrical cardiometry
measuring cardiac output using electrical cardiometry
Time frame: 30 minutes after dobutamine infusion
cardiac output by pulmonary artery catheter
measuring cardiac output using pulmonary artery catheter
Time frame: 30 minutes after termination of dobutamine infusion
cardiac output by electrical cardiometry
measuring cardiac output using electrical cardiometry
Time frame: 30 minutes after termination of dobutamine infusion
cardiac output by pulmonary artery catheter
measuring cardiac output using pulmonary artery catheter
Time frame: 30 minutes after nitric oxide inhalation
cardiac output by electrical cardiometry
measuring cardiac output using electrical cardiometry
Time frame: 30 minutes after nitric oxide inhalation
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