COMPARISION OF THE ACCURACY OF CARDIAC INDEX MEASUREMENT

BY USCOM TO PICCO IN SEPTIC PATIENTS.

Nguy n Th Thúy Ngân, Nguy n Qu c Kínhễ ị ễ ố

Anesthesia and resuscitation department

Vi t Đ c hospitalệ ứ

BACKGROUND

Catheter Swan Ganz-gold standard measured CO, haemodynamic index Complications and not applied to children

Picco: monitoring hemodynamic state continuostly Invasive procedure, risk of infection. Need of a non invasive and safe procedure applied for

all patientsUSCOM: measures blood flow across the aortic or pulmonary

valves using continuous wave Doppler ultrasound. Invase, safe Applicable to children Evaluate left heart and right heart function.

STUDY OBJECTIVES

Comparing the accuracy of cardiac index measured by USCOM (ultrasound cardiac output monitor) to PICCO (Pulse contour cardiac output) in patients with septic shock.

STUDY METHOD

A clinical trial, prospectively descriptive and analytical study

15 patients with septic shock over 80 turns of measurement comparing USCOM to PICCO at the same time.

Place: ICU, VietDuc hospital Exlusion: Patients with cardiac diseases, thoracic

trauma, coagulation disorder, using anticoagulation agents, catheter related ifection, missed data.

STUDY METHOD

Data colected: using USCOM with stadard criteria

the correlation of cardiac index measured by two methods Picco and USCOM based on the correlation coefficient; diaphragms and linear

regression equation y=ax+b. Bland-Altman Plot was used to estimate the limit of

agreement between two methods when < 20% of the values was out of 2 SD interval.

RESULTS

Features of patients Age: 22-85 Inotropic agent supported

The correlation coefficient

The cardiac indexes measured by USCOM and PICCO had a strong positive linear correlation (r=0.8, p<0.001) Sophia Horster et al: r=0.89

RESULT

Linear regression equation was y=0,67*x+1.63. According to Bland Altman Plot, there was only

5% out of ±2SD interval (compared to the limit less than 20%).

CONCLUSION

The cardiac index measured by USCOM method had a high accuracy and could replace the invasive method to evaluate the hemodynamic state in clinic.

THANK YOU FOR YOUR ATTENTION!

THANK YOU FOR YOUR ATTENTION!