Abstract

LAVADENZ CUENTAS, Luis Arturo; PEREZ CHACON, Maria Eugenia; CORRALES VARGAS, Vivian  and  WINDER-AGUILAR HUARITA, Rodrigo. Venoarterial carbon dioxide difference as a predictor of mortality in patients' state of shock at Intensive Therapy unit from Viedma's Hospital, june 2013-january 2014. Rev Cient Cienc Méd [online]. 2014, vol.17, n.2, pp.14-18. ISSN 1817-7433.

The shock is the end result of the presence of hypoperfusion and tissue hypoxia, ∆pCO2 level assessment can identify situations of tissue hypoperfusion or oxygen debt undetectable by other parameters such as ScvO2 as predictors of mortality in the first 24 hours. The objective of the study is to assess the usefulness of veno-arterial carbon dioxide difference measurement as predictor of mortality in shock patients at Intensive Therapy Unit of Viedma's Hospital, Cochabamba-Bolivia. It is a prospective and descriptive study with a perfect simple of 74 patients with 95% confidence level. Data were collected by a pre-structure form with the following variables: Sex, age, diagnosis of income, arteria-venous delta CO2, lactate, ScvO2, heart rate, mean arterial pressure at admission and at 24 hrs. Statistical analyses were performed in the IBM SPSS program 20® for Windows. We find that the average value of ∆pCO2 to the income of the deceased patients was 8.3 mmHg compared to a value of 5 mmHg in surviving patients, keeping the difference 24 hours a day. ∆pCO2 level >6 mmHg at the first 24hrs in the mortality group was 14 (45%) patients compared with ∆pCO2> 6 mmHg at only 19% survival group. We conclude that the ∆pCO2 has good sensitivity as a predictor of early mortality, found that 83.9% of patients whodie have an initial ∆pCO2 >6mmHg.

Keywords : Shock; difference; mortality; therapy.

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