This Brazilian retrospective case-control study evaluated nursing indicators in 116 adult ICU patients with acute myocardial infarction, including 58 with cardiogenic shock and 58 without. Unstable blood pressure had 85.0% sensitivity (95% CI 76.2–93.8) and 83.6% specificity (95% CI 74.4–92.8) for distinguishing the groups. In adjusted analysis, unstable blood pressure was associated with shock (adjusted odds ratio 7.80; 95% CI 3.10–19.60), alongside hypoxia, hypoxemia, and inadequate fluid volume. Thermal and hemorrhagic indicators were no longer significant after adjustment.
These findings identify bedside indicators associated with cardiogenic shock in ICU patients with myocardial infarction. They do not establish prospective prediction of deterioration or improved outcomes from indicator-guided monitoring.
Study limitation: The single-centre retrospective case-control design does not establish whether these indicators preceded shock or predict future deterioration.
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