BACKGROUND: When clinical "hard signs" of necrotizing soft tissue infection (NSTI) are present, establishing the diagnosis of NSTI is not difficult. However, hard signs of NSTIs are often absent on presentation, thus potentially delaying diagnosis and surgical intervention. A prior retrospective study performed at our institution demonstrated that admission white blood cell (WBC) count >15,400/microL x 10(9)/L and/or serum sodium (Na) <135 mEq/L could help differentiate NSTI from non-NSTI. The purpose of this study was to prospectively determine how often "hard signs" of NSTI are present and to evaluate how knowledge of laboratory parameters influence our surgeons' abilities to diagnose and manage NSTI. METHODS: Prospective observational data collection to determine the sensitivity of NSTI "hard signs" and administration of a questionnaire in which the surgeon was asked whether he believed the patient had an NSTI based on physical examination (PE) alone, and then after being informed of the Na level and WBC count. RESULTS: Twenty-one patients with a mean age of 41 years had NSTI. Mean admission WBC count and Na level were 31,500/microL and 127 mEq/L, respectively. Only 9 (43%) had hard signs of NSTI. Suspicion for NSTI increased from 9 to 18 (86%) after evaluating laboratory criteria (P = .008). CONCLUSIONS: Fewer than half of the patients presented with hard clinical signs of NSTI. Admission WBC count >15,400/microL or serum Na <135 mEq/L significantly increased suspicion for NSTI and aided early diagnosis.
BACKGROUND: When clinical "hard signs" of necrotizing soft tissue infection (NSTI) are present, establishing the diagnosis of NSTI is not difficult. However, hard signs of NSTIs are often absent on presentation, thus potentially delaying diagnosis and surgical intervention. A prior retrospective study performed at our institution demonstrated that admission white blood cell (WBC) count >15,400/microL x 10(9)/L and/or serum sodium (Na) <135 mEq/L could help differentiate NSTI from non-NSTI. The purpose of this study was to prospectively determine how often "hard signs" of NSTI are present and to evaluate how knowledge of laboratory parameters influence our surgeons' abilities to diagnose and manage NSTI. METHODS: Prospective observational data collection to determine the sensitivity of NSTI "hard signs" and administration of a questionnaire in which the surgeon was asked whether he believed the patient had an NSTI based on physical examination (PE) alone, and then after being informed of the Na level and WBC count. RESULTS: Twenty-one patients with a mean age of 41 years had NSTI. Mean admission WBC count and Na level were 31,500/microL and 127 mEq/L, respectively. Only 9 (43%) had hard signs of NSTI. Suspicion for NSTI increased from 9 to 18 (86%) after evaluating laboratory criteria (P = .008). CONCLUSIONS: Fewer than half of the patients presented with hard clinical signs of NSTI. Admission WBC count >15,400/microL or serum Na <135 mEq/L significantly increased suspicion for NSTI and aided early diagnosis.
Authors: Malcolm Booth; Lindsay Donaldson; Xizhong Cui; Junfeng Sun; Stephen Cole; Susan Dailsey; Andrew Hart; Neil Johns; Paul McConnell; Tina McLennan; Benjamin Parcell; Henry Robb; Benjamin Shippey; Malcolm Sim; Charles Wallis; Peter Q Eichacker Journal: Emerg Infect Dis Date: 2014-09 Impact factor: 6.883
Authors: Michael M Neeki; Fanglong Dong; Christine Au; Jake Toy; Nima Khoshab; Carol Lee; Eugene Kwong; Ho Wang Yuen; Jonathan Lee; Arbi Ayvazian; Pamela Lux; Rodney Borger Journal: West J Emerg Med Date: 2017-05-12