ICU Literature Updates from July 2014

Apnea-Hypopnea Index Use Among Intensive Care Patients: A Case Series

In this study, the authors review eight cases where the apnea-hypopnea index was determined using ApneaLink™. The authors describe the ApneaLink™ tool as a simple and inexpensive device that determines the apnea hypopnea index with a sensitivity and specificity of 100% and 87.5% respectively. The cases demonstrate that the ApneaLink™ device can be utilized in a variety of clinical situations such as post-operatively and in the ICU. In each of the case studies, the ApneaLink™ device help the authors make better management decisions such as ICU admission after surgery or discharge from the ICU with CPAP. The authors also demonstrate how this device can be used to enhance informed consent.

Obstructive Sleep Apnea, Obesity, and the Development of Acute Respiratory Distress Syndrome

In this study, the authors evaluated weather obstructive sleep apnea could increase the risk of pulmonary complications and ARDS in a cohort of 5584 surgical patients from 22 different hospitals. All patients had at least one risk factor for ARDS. 252 of the patient had OSA and 66% of these patients were obese. After statistical analysis, the authors could not conclude that OSA was a risk factor for ARDS. However, BMI was independently associated with ARDS. Hence, it appears that obese patients, with at least one risk factors for ARDS, are at increase risk of developing this severe pulmonary complication post-operatively.