Evaluation of the utility of cardiac ultrasonography of patients in a surgical intensive care unit

Prichayudh, Supparerk; Uthaithammarat, Tatsana; Chatrkaw, Phornlert; Poonyathawon, Sahadol; Thawitsri, Thammasak; Kumwilaisak, Kanya; Kongwibulwut, Manasnun; Chokengarmwong, Nalin

doi:10.5372/1905-7415.1002.479

Abstract

Background

Ultrasonography is being more commonly used by intensivists to assess the hemodynamic status of patients in intensive care units (ICUs) and for other purposes.

Objective

To review the indications for and evaluate the impact of cardiac ultrasonography (CUS) on the management of patients in a surgical ICU (SICU).

Method

We conducted a retrospective observational cohort study of patients in the SICU who underwent CUS performed by intensivists at King Chulalongkorn Memorial Hospital from January 2011 to March 2013. CUS was used to determine (1) preload (using inferior vena cava (IVC) diameter and collapsibility index), (2) cardiac contractility (using subjective assessment and fractional shortening), and (3) other miscellaneous findings.

Result

We included data from 157 patients (96 male and 61 female) whose age ranged from 15 to 99 years (mean 63.5 years) in the study. CUS was performed 190 times in these 157 patients. The most common indication for CUS was hemodynamic status assessment (78), followed by shock (69), oliguria (35), and other (8). CUS results led to 71 changes in management (37% of cases) ; namely, fluid challenge (38), inotropic drug management (7), drainage of pleural/abdominal fluid (12), and other changes (14). A weakly-positive correlation between the IVC diameter and CVP (Pearson’s r = 0.45) was demonstrated. The overall mortality rate was 14.6%.

Conclusion

CUS performed by intensivists can be used to assess the hemodynamic status of patients in the SICU, especially those with shock or oliguria, and lead to changes in the management of these patients.

References

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