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Continuous peripheral perfusion index in patients admitted to hospital wards – An observational study
Author(s) -
Rasmussen Patrick S.,
Aasvang Eske K.,
Olsen Rasmus M.,
HaahrRaunkjaer Camilla,
Elvekjaer Mikkel,
Sørensen Helge B. D.,
Meyhoff Christian S.
Publication year - 2021
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/aas.13711
Subject(s) - medicine , evening , quartile , exacerbation , morning , peripheral , cardiology , confidence interval , physics , astronomy
Risk patients admitted to hospital wards may quickly develop haemodynamic deterioration and early recognition has high priority to allow preventive intervention. The peripheral perfusion index (PPI) may be an indicator of circulatory distress by assessing peripheral perfusion non‐invasively from photoplethysmography. We aimed to describe the characteristics of PPI in hospitalized patients since this is not well‐studied. Materials and Methods Patients admitted due to either acute exacerbation of chronic obstructive pulmonary disease (AECOPD) or after major abdominal cancer surgery were included in this study. Patients were monitored continuously up to 96 hours with a pulse oximeter. Comparisons between median PPI each day, time of day and admission type were described with mean difference (MD) and were analysed using Wilcoxon rank sum test and related to morbidity and mortality. Results PPI data from 291 patients were recorded for a total of 9279 hours. Median PPI fell from 1.4 (inter quartile range, IQR 0.9‐2.3) on day 1 to 1.0 (IQR 0.6‐1.6) on day 4. Significant differences occurred between PPI day vs evening (MD = 0.18, 95% CI 0.16‐0.20, P = .028), day vs night (MD = 0.56, 95% CI 0.49‐0.62, P < .0001) and evening vs night (MD = 0.38, 95% CI 0.33‐0.42, P = .002). No significant difference in median PPI between AECOPD and surgical patients was found (MD = 0.15, 95% CI −0.08‐0.38, P = .62). Conclusion Lower PPI during daytime vs evening and night‐time were seen for both populations. The highest frequency of serious adverse events and mortality was seen among patients with low median PPI. The clinical impact of PPI monitoring needs further confirmation.