Risk factors for prolonged intensive care unit stays in patients after cardiac surgery with cardiopulmonary bypass: A retrospective observational study.
Xueying Zhang, Wenxia Zhang, Hongyu Lou and 5 others
PMID 34631988WHAT IT FOUND
137 of 395 patients stayed longer than 72 hours after heart surgery with bypass.
Oxygenation index within 6 hours, arrhythmias, prolonged mechanical ventilation, and non-invasive assisted ventilation were linked to longer ICU stays.
Key findings
01137 of 395 patients (34.7%) had a prolonged ICU stay longer than 72 hours.
02Non-invasive assisted ventilation use had the strongest reported association with prolonged ICU stay.
03Prolonged mechanical ventilation, oxygenation index within 6 hours after surgery, postoperative atrial arrhythmia, and postoperative ventricular arrhythmia were also independently associated with prolonged ICU stay.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
This was retrospective, so it cannot prove that any factor caused a longer ICU stay. It was done in a single urban tertiary hospital in China, so other settings may differ. Patients who died within 72 hours were excluded, so early deaths are not represented. Only coronary bypass and valve surgery were included, not other cardiac surgeries with cardiopulmonary bypass. The authors note potential omitted risk factors and a relatively small sample.
Declared interests
Funded by the Science and Technology Planning Project of Guangdong Province, China, grant number 20160910. The authors declared no conflict of interest.
The easy way to misread this
Do not read these factors as proof that changing ventilation, oxygenation, or rhythm management will shorten ICU stays. This was a single-centre retrospective study, so it shows associations, not cause and effect.