Research Article: Predictive value of perioperative procalcitonin, C reactive protein and high-sensitivity C reactive protein for the risk of postoperative complications after non-cardiac surgery in elderly patients: a nested case–control study
Abstract:
Objective Little is known about the correlation between perioperative concentrations of inflammatory biomarkers and postoperative complications. This study explored whether the plasma concentrations and perioperative changes of procalcitonin (PCT), C reactive protein (CRP) and high-sensitivity CRP (hsCRP) could predict the risk of postoperative morbidity in elderly patients undergoing elective non-cardiac surgery. Design A nested case–control study. Setting A tertiary hospital in China. Participants A total of 498 patients aged ?65 years from a prospective cohort who underwent elective non-cardiac surgery between June 2020 and April 2021. Primary outcome measures The primary outcomes were the efficacy of plasma concentrations of PCT, CRP and hsCRP in predicting the risk of Clavien-Dindo Classification (CDC) ?grade 3 and major complications. The major complications included mortality, an intensive care unit stay length >24?hour, cardiovascular events, acute kidney injury, postoperative cognitive dysfunction and infections. Results For major complications, the area under the curve (AUC) (95%?CI) of PCT-24 hours, PCT change and PCT change rate were 0.750 (0.698 to 0.803), 0.740 (0.686 to 0.795) and 0.711 (0.651 to 0.771), respectively. The AUC (95%?CI) of CRP-24 hours, CRP change, CRP change rate and hsCRP baseline were 0.835 (0.789 to 0.881), 0.818 (0.770 to 0.867), 0.691 (0.625 to 0.756) and 0.616 (0.554 to 0.678), respectively. For complications ?CDC grade 3, the AUC (95%?CI) of PCT-24 hours, PCT change and PCT change rate were 0.662 (0.543 to 0.780), 0.643 (0.514 to 0.772) and 0.627 (0.494 to 0.761), respectively. The AUC (95%?CI) of CRP-24 hours and hsCRP baseline were 0.649 (0.527 to 0.771) and 0.639 (0.530 to 0.748), respectively. Conclusions PCT-24 hours, CRP-24 hours, the change of perioperative PCT and CRP were valuable predictors of major complications occurring within 30 days after non-cardiac surgery in the elderly. Trial registration number China Clinical Trial Registry: ChiCTR1900026223.
Introduction:
The proportion of people aged over 65 years in the world is expected to reach 16% in 2050. 1 Among a total of more than 300?million surgeries in the world every year, patients aged 65 years and over account for more than 30% of cases. 2 The increasing rate of surgeries in aged patients has exceeded the rapid ageing rate of the population. 3 Compared with adults, elderly patients are more prone to postoperative complications due to age-related degenerative physiological characteristics and increasing coexisting…
Read more