- Poster presentation
- Open Access
The timing of new acute hemodynamic events in ICU patients
© BioMed Central Ltd. 2004
- Published: 15 March 2004
- Event Frequency
- Academic Medical Center
- Sofa Score
- Initial Admission
- Pittsburgh Medical
Whether the day and time of ICU admission or discharge impacts patient care and outcome has been the focus of recent inquiry. There may also be a relationship between timing and outcome for events occurring within the ICU. As a first step to explore this issue, we aimed to describe the timing of new acute hemodynamic events in a large ICU population.
Acute hemodynamic events are equally distributed throughout the day and throughout the week.
From 1 July 1 2000 to 1 June 2001, we prospectively collected data for all ICU patients at the University of Pittsburgh Medical Center, a tertiary care academic medical center with > 120 ICU beds serving medical, surgical, trauma, neurological, and transplant patients. Because we wished to focus on new 'within-ICU' events, we defined an event as the first occurrence of acute hemodynamic instability after > 24 hours in the ICU (to exclude events associated with the initial admission) and > 6 immediately-preceding hours with a cardiovascular SOFA score ≤ 1. We defined acute instability as MAP < 60 mmHg, SBP < 90 mmHg, or a decrease in SBP ≥ 40 mmHg when the prior SBP was < 150 mmHg. We generated event frequency by hour and by day of the week.
New acute hemodynamic events are extremely common in the ICU. They vary little by time of day and day of week. This finding may have important implications for ICU staffing patterns.