Perfusion index from pulse oximetry predicts mortality and correlates with illness severity scores in intensive care unit patients
Acta Medica Mediterranea, cilt.31, sa.2, ss.237-242, 2015 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 31 Sayı: 2
- Basım Tarihi: 2015
- Dergi Adı: Acta Medica Mediterranea
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.237-242
- Anahtar Kelimeler: Critical Illness, Mortality, Organ Dysfunction Scores, Oximetry, Perfusion
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Aims: We aim to determine the ability of perfusion index to predict mortality of critically ill patients. Materials and methods: This is a prospective, observational cohort study conducted in an adult medical intensive care unit. Perfusion index levels were measured daily from admission to discharge/mortality of all patients. Prognostic scores (the Acute Physiology and Chronic Health Evaluation II, Sequential Organ Failure Assessment and Simplified Acute Physiology Score) were also calculated daily using the data recorded from medical records. Sensitivity, specificity, negative and positive predictive values and likelihood ratios of perfusion index to predict mortality were calculated. Relationship of perfusion index to prognostic scores was also investigated. Results: A total of 60 patients met the inclusion criteria. 26 were died and 34 were discharged from intensive care. Last day perfusion index levels were significantly lower in non-survivors (hazard ratio: 0.63, 0.49-0.81, %95 Confidence Interval, p<0.001). The sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio, and negative likelihood ratio with a cut-off value 2.35 were 88%, 94%, 92%, 91%, 14.7, and 0.13, respectively. First and last intensive care day the Acute Physiology and Chronic Health Evaluation II, Sequential Organ Failure Assessment and Simplified Acute Physiology Score were all correlated with perfusion index. Conclusion: Perfusion index seems to be as valuable as complex scoring systems for predicting mortality of intensive care unit patients.