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Τετάρτη 21 Φεβρουαρίου 2018

Preoperative laboratory data are associated with complications and surgical site infection in composite head and neck surgical resections

Publication date: Available online 31 January 2018
Source:American Journal of Otolaryngology
Author(s): Nicholas B. Abt, Rosh K. Sethi, Sidharth V. Puram, Mark A. Varvares
Objectives1) Describe normal/abnormal preoperative laboratory testing incidence in head and neck (H&N) composite resections and 2) determine complication, surgical site infection (SSI), and transfusion predictors by laboratory test.MethodsThe 2006 to 2013 NSQIP databases were queried for H&N composite resections. Laboratory data was categorized within, under, or above the normal reference range according to NSQIP definitions. Overall complications and SSI were analyzed with multivariable logistic regression analysis.ResultsFrom 2006 to 2013, there were 1193H&N composite resections, of which 1135 (95.1%) underwent ≥1 preoperative laboratory test. Complete blood counts were obtained in 92.3%, basic metabolic panels in 90.7%, coagulation studies in 56.2%, and liver function tests (LFTs) in 52.6%. Low sodium was found in 11.5%, increasing complication odds by 2.30 (p = 0.005). High AST comprised 10.0% and increased complication odds (OR = 2.93, p = 0.012). Additionally, 9.2% had a high white blood cell (WBC) count and 3.5% had high platelets, increasing complications by 1.92 (p = 0.030) and 3.13 (p = 0.015), respectively. BUN, creatinine, total bilirubin, albumin, alkaline phosphatase, INR, PT, and aPTT abnormal values did not affect postoperative complications. Increased SSI odds were appreciated with low sodium (OR: 2.83, p = 0.002), high AST (OR: 6.85, p < 0.001), and high alkaline phosphatase (OR: 5.46, p = 0.007). Importantly, INR had no effect on transfusion rates. High PT, aPTT, or low platelets did not change transfusion odds.ConclusionInflammatory markers are associated with complications but not SSI. High LFTs and low sodium are associated with complications and SSI. Coagulopathies did not increase transfusion rates. These findings identify laboratory studies to focus on during H&N resection preoperative assessments.



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