A comparison between cardiac output monitoring using (minimally invasive) esophageal Doppler and (noninvasive) thoracic electrical bioimpedance

Accuracy, precision and trending ability of electrical cardiometry cardiac output versus esophageal Doppler: a prospective, observational study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN43678006

Enrollment

Registered

2017-10-02

Start date

2009-08-25

Completion date

Unknown

Last updated

2017-10-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Measurement of cardiac output with different devices in patients sheduled for major abdominal surgery Surgery

Interventions

Participants are randomly sampled from patients undergoing major abdominal surgery. They receive the standard level of care during surgery. After induction of anesthesia, a esophageal Doppler probe an

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Patients scheduled for elective major abdominal surgery 2. > 18 years old 3. Informed consent

Exclusion criteria

Exclusion criteria: 1. Nasal, pharyngeal, laryngeal or esophageal pathologies 2. Beeding disorders 3. Cardiac arrhythmias 4. Age < 18 years 5. No informed consent

Design outcomes

Primary

Measure	Time frame
1. Accuracy and precision is measured using Bland Altman analysis by comparing results from the esophageal Doppler to the results of the bioimpedance cardiac output monitor at the eight timepoints. The esophageal Doppler is validated against pulmonary artery catheter, the more or less gold standard of cardiac output measurement. So, the Doppler technique represents the gold standard in this study 2. Trending ability of the techniques is evaluated applying four-quadrant plot and polar plot methodology	—

Measure

Time frame

1. Accuracy and precision is measured using Bland Altman analysis by comparing results from the esophageal Doppler to the results of the bioimpedance cardiac output monitor at the eight timepoints. The esophageal Doppler is validated against pulmonary artery catheter, the more or less gold standard of cardiac output measurement. So, the Doppler technique represents the gold standard in this study 2. Trending ability of the techniques is evaluated applying four-quadrant plot and polar plot methodology

—

Secondary

Measure	Time frame
Errors in bioimpedance measures are assessed using interruption of the skin's integrity and opening of the abdominal cavity by a surgical incision at the time of surgery	—

Countries

Netherlands

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026