Key result
Electrical cardiometry provided accurate and reliable cardiac output measurements with strong correlation to transthoracic echocardiography before (r=0.957) and after lung surgeries.
Why the study?
Lung surgeries may alter anatomy and decrease cardiac output, making noninvasive cardiac output monitoring valuable for clinical decision-making.
Does electrical cardiometry accurately measure cardiac output compared to transthoracic echocardiography in patients undergoing elective lung surgery?
Cohort (n=60)
Single-blind
No
Does electrical cardiometry accurately measure cardiac output compared to transthoracic echocardiography in patients undergoing elective lung surgery?
Mean Difference: 0.01
Absolute Event Rate: 6.06% vs 6.07%
p-value: p=<0.001
Electrical cardiometry provides accurate and reliable noninvasive measurements of cardiac output, stroke volume, and heart rate comparable to transthoracic echocardiography in patients undergoing lung surgery.
May support EC as noninvasive CO alternative in lung surgery; hypothesis-generating pending randomized validation.
Background: The anatomical changes associated with lung surgeries may decrease cardiac output and heart function. Therefore, monitoring of cardiac output (CO) is of significant value in these patients for clinical decision-making. Objective: This study is to evaluate the reliability of electrical cardiometry (EC) for the noninvasive continuous determination of CO after lobectomy or pneumonectomy compared to transthoracic echocardiography (TTE). Patients and Methods: This study was carried out on 60 patients, age ≥18 years scheduled for elective lung surgery (lobectomy or pneumonectomy). All patients underwent simultaneous measurement by EC using the ICON_ device and by TTE by measuring left ventricle outflow tract diameter (LVOT) and velocity time integral (VTI). Heart rate (HR), systolic and diastolic blood pressure (SBP and DBP), stroke volume (SV), stroke volume index (SVI), CO, and cardiac index (CI) were measured 1 day before the surgery and 7 days after the surgery. Results: There was no significant difference between TTE and EC regarding preoperative and postoperative HR, SV, SVI, CO, and CI. There was a strong positive correlation between TTE and EC as regard preoperative and postoperative HR, SV, SVI, CO, and CI. Bland and Altman analysis showed low bias with accepted limits of agreement of HR, SV, SVI, CO, and CI. Postoperative readings showed a significant increase in HR and a significant decrease in SV and CO (either by TTE or EC), SBP, and DBP as compared to preoperative reading. Conclusion: Compared to the TTE, EC provides accurate and reliable CO, SV, and HR measurements before and even after lung surgeries.
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Elgebaly et al. (2020) conducted a cohort in Elective lung surgery (lobectomy or pneumonectomy) (n=60). Electrical cardiometry (EC) vs. Transthoracic echocardiography (TTE) was evaluated on Agreement of cardiac output (CO) measurement between TTE and EC (mean bias 0.01 L/min (r=0.957), 95% CI 0.928-0.974, p=<0.001). Electrical cardiometry provided accurate and reliable cardiac output measurements with strong correlation to transthoracic echocardiography before (r=0.957) and after lung surgeries.
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