JOURNAL ARTICLE

Echocardiography for prognostication during the resuscitation of intensive care unit patients with non-shockable rhythm cardiac arrest

Uri Adrian Prync Flato, Edison Ferreira Paiva, Mariana Teixeira Carballo, Anna Maria Buehler, Roberto Marco, Ari Timerman
Resuscitation 2015, 92: 1-6
25891961

AIM: Transthoracic echocardiography (TTE) during cardiopulmonary arrest (CPA) has been studied in victims of cardiac arrests. Our objective was to evaluate the feasibility and usefulness of TTE in victims of cardiac arrest with non-shockable rhythms hospitalized in intensive care units (ICUs).

METHODS: This prospective and observational cohort study evaluated ICU patients with CPA in asystole or pulseless electrical activity (PEA). Intensivists performed TTE during intervals of up to 10s as established in the treatment protocol. Myocardial contractility was defined as intrinsic movement of the myocardium coordinated with cardiac valve movement. PEA without contractility was classified as electromechanical dissociation (EMD), and with contractility as pseudo-EMD. The images, the rates of return of spontaneous circulation (ROSC) and the survival upon hospital discharge and after 180 days were evaluated.

RESULTS: A total of 49 patients were included. Image quality was considered adequate in all cases and contributed to the diagnosis of CPA in 51.0% of the patients. Of the 49 patients included, 17 (34.7%) were in asystole and 32 (65.3%) in PEA, among which 5 (10.2%) were in EMD and 27 (55.1%) in pseudo-EMD. The rates of ROSC were 70.4% for those in pseudo-EMD, 20.0% for those in EMD, and 23.5% for those in asystole. Survival upon hospital discharge and after 180 days occurred only in patients in pseudo-EMD (22.2% and 14.8%, respectively).

CONCLUSIONS: TTE conducted during cardiopulmonary resuscitation in ICU patients can be performed without interfering with care protocols and can contribute to the differential diagnosis of CPA and to the identification of a subgroup of patients with better prognosis.

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