Evaluation of Pre-arrest Morbidity score and Prognosis after Resuscitation score and other clinical variables associated with in-hospital cardiac arrest in southern Sweden.
Resuscitation. 2014 Jul 28;
Authors: Ohlsson MA, Kennedy LM, Juhlin T, Melander O
Abstract
OBJECTIVE: To evaluate Pre-arrest Morbidity score (PAM), Prognosis after Resuscitation score (PAR) and to identify additional clinical variables associated with survival after in-hospital cardiac arrest (IHCA) treated with cardiopulmonary resuscitation (CPR).
METHODS: A retrospective observational study involving all cases of IHCA at Skåne University Hospital Malmö 2007-2010.
RESULTS: Two-hundred-eighty-seven cases of IHCA were identified (61.3% male; mean age 70 years) of whom 20.2% survived until discharge. The odds ratio (95% confidence interval) for death prior to discharge was 6.49 (1.50-28.19) (P=0.013) for PAM>6 and 3.88 (1.95-7.73) (P<0.001) for PAR>4. At PAM- and PAR-scores>5, specificity exceeded 90%, while sensitivity was only 20-30%. The odds ratio for in-hospital mortality was 0.38 (0.20-0.72) (P=0.003) for patients with cardiac monitoring, 9.86 (5.08-19.12) (P<0.001) for non-shockable vs shockable rhythm, 0.32 (0.15-0.69) (P=0.004) for presence of ST-elevation myocardial infarction (STEMI), 0.27 (0.09-0.78) (P=0.016) for patients with independent Activities of Daily Life (ADL) and 13.86 (1.86-103.46) (P=0.010) for patients with malignancies. Heart rate (HR) on admission (per bpm) [1.024 (1.009-1.040) (P=0.002)] and sodium plasma concentration on admission (permmol/L) [0.92 (0.85-0.99) (P=0.023)] were significantly associated with in-hospital mortality.
CONCLUSION: PAM- and PAR-scores do not sufficiently discriminate between in-hospital death and survival after IHCA to be used as clinical tools guiding CPR decisions. We confirm that malignancy is associated with increased in-hospital mortality, and cardiac monitoring, shockable rhythm, STEMI and independent ADL, with decreased in-hospital mortality. Interestingly, our results suggest that HR and plasma sodium concentration upon admission may represent new tools for risk stratification.
PMID: 25079198 [PubMed - as supplied by publisher]