Robert E Freundlich1, Neal M Duggal2, Michelle Housey3, Tyler T Tremper4, Milo C Engoren5, Sachin Kheterpal6. 1. Department of Anesthesiology, Vanderbilt University Medical Center, 1211 21st Ave S, Suite 526, Nashville, TN 37212. Electronic address: Robert.e.freundlich@vanderbilt.edu. 2. Department of Anesthesiology, University of Michigan, 1500 E Medical Center Dr, U1H247, SPC 5048, Ann Arbor, MI 48109. Electronic address: neald@med.umich.edu. 3. Department of Anesthesiology, University of Michigan, 1500 E Medical Center Dr, U1H247, SPC 5048, Ann Arbor, MI 48109. Electronic address: mhousey@med.umich.edu. 4. Department of Anesthesiology, University of Michigan, 1500 E Medical Center Dr, U1H247, SPC 5048, Ann Arbor, MI 48109. Electronic address: ttremper@med.umich.edu. 5. Department of Anesthesiology, University of Michigan, 1500 E Medical Center Dr, U1H247, SPC 5048, Ann Arbor, MI 48109. Electronic address: engorenm@med.umich.edu. 6. Department of Anesthesiology, University of Michigan, 1500 E Medical Center Dr, U1H247, SPC 5048, Ann Arbor, MI 48109. Electronic address: sachinkh@med.umich.edu.
Abstract
STUDY OBJECTIVE: To facilitate the identification of drugs and patient factors associated with hemodynamically significant anaphylaxis. DESIGN: Using an existing database containing complete perioperative records, instances of hemodynamically significant anaphylaxis were identified using a physiologic and treatment-based screening algorithm. All cases were manually reviewed by 2 clinicians, with a third adjudicating disagreements, and confirmed cases were matched 3:1 with control cases. Intraoperative medications given in instances of hemodynamically significant anaphylaxis and patient risk factors were compared with control cases. SETTING: University of Michigan Hospital, a large, tertiary care hospital. PATIENTS: All adult patients undergoing surgery between January 1, 2004, and January 5, 2015. INTERVENTIONS: None. MEASUREMENTS: Incidence of hemodynamically significant anaphylaxis during anesthesia. Patient risk factors and intraoperative medications associated with hemodynamically significant anaphylaxis. MAIN RESULTS: Hemodynamically significant anaphylaxis occurred in 55 of 461 986 cases (1 in 8400). Hemodynamically significant anaphylaxis occurred in 52 patients, with 1 patient experiencing 3 instances and another patient 2 instances. Only 1 drug was associated with an increased risk of hemodynamically significant anaphylaxis: protamine (odds ratio, 11.78; 95% confidence interval, 1.40-99.26; P=.0233). No category of drugs was associated with increased risk. Of patient risk factors, only personal history of anaphylaxis was associated with an increased risk (odds ratio, 77.1; 95% confidence interval, 10.46-567.69; P=<.0001). Postoperative follow-up and evaluation of patients were low at our institution. A serum tryptase level was sent in only 49% of cases, and 41% of levels were positive, an overall positive rate of 20% of cases. Following instances of hemodynamically significant anaphylaxis, only 29% of patients were seen and evaluated by an allergist at our institution. CONCLUSIONS: Hemodynamically significant anaphylaxis is a rare complication of anesthesia, with an incidence consistent with the existing literature. Contrary to most existing literature, only protamine was associated with increased risk. A personal history of anaphylaxis appears to best predict risk of hemodynamically significant anaphylaxis.
STUDY OBJECTIVE: To facilitate the identification of drugs and patient factors associated with hemodynamically significant anaphylaxis. DESIGN: Using an existing database containing complete perioperative records, instances of hemodynamically significant anaphylaxis were identified using a physiologic and treatment-based screening algorithm. All cases were manually reviewed by 2 clinicians, with a third adjudicating disagreements, and confirmed cases were matched 3:1 with control cases. Intraoperative medications given in instances of hemodynamically significant anaphylaxis and patient risk factors were compared with control cases. SETTING: University of Michigan Hospital, a large, tertiary care hospital. PATIENTS: All adult patients undergoing surgery between January 1, 2004, and January 5, 2015. INTERVENTIONS: None. MEASUREMENTS: Incidence of hemodynamically significant anaphylaxis during anesthesia. Patient risk factors and intraoperative medications associated with hemodynamically significant anaphylaxis. MAIN RESULTS: Hemodynamically significant anaphylaxis occurred in 55 of 461 986 cases (1 in 8400). Hemodynamically significant anaphylaxis occurred in 52 patients, with 1 patient experiencing 3 instances and another patient 2 instances. Only 1 drug was associated with an increased risk of hemodynamically significant anaphylaxis: protamine (odds ratio, 11.78; 95% confidence interval, 1.40-99.26; P=.0233). No category of drugs was associated with increased risk. Of patient risk factors, only personal history of anaphylaxis was associated with an increased risk (odds ratio, 77.1; 95% confidence interval, 10.46-567.69; P=<.0001). Postoperative follow-up and evaluation of patients were low at our institution. A serum tryptase level was sent in only 49% of cases, and 41% of levels were positive, an overall positive rate of 20% of cases. Following instances of hemodynamically significant anaphylaxis, only 29% of patients were seen and evaluated by an allergist at our institution. CONCLUSIONS: Hemodynamically significant anaphylaxis is a rare complication of anesthesia, with an incidence consistent with the existing literature. Contrary to most existing literature, only protamine was associated with increased risk. A personal history of anaphylaxis appears to best predict risk of hemodynamically significant anaphylaxis.
Authors: Sachin Kheterpal; Michelle T Vaughn; Timur Z Dubovoy; Nirav J Shah; Lori D Bash; Douglas A Colquhoun; Amy M Shanks; Michael R Mathis; Roy G Soto; Amit Bardia; Karsten Bartels; Patrick J McCormick; Robert B Schonberger; Leif Saager Journal: Anesthesiology Date: 2020-06 Impact factor: 7.892
Authors: Dirceu Solé; Maria Anita Costa Spindola; Marcelo Vivolo Aun; Liana Maria Tôrres de Araújo Azi; Luiz Antonio Guerra Bernd; Daniela Bianchi Garcia; Albertina Varandas Capelo; Débora de Oliveira Cumino; Alex Eustáquio Lacerda; Luciana Cavalcanti Lima; Edelton Flávio Morato; Rogean Rodrigues Nunes; Norma de Paula Motta Rubini; Jane da Silva; Maria Angela Tardelli; Alexandra Sayuri Watanabe; Erick Freitas Curi; Flavio Sano Journal: Braz J Anesthesiol Date: 2020-11-09