Rafael Stein Rosseto1, Alexandre Varella Giannetti2, Lucidio Duarte de Souza Filho3, Rodrigo Moreira Faleiro3. 1. Department of Surgery, School of Medicine, Universidade Federal de Minas Gerais, Minas Gerais, Brazil; Neurosurgery Service, Hospital Pronto-Socorro João XXIII, Belo Horizonte, Minas Gerais, Brazil. Electronic address: rafaelsteinrosseto@yahoo.com.br. 2. Department of Surgery, School of Medicine, Universidade Federal de Minas Gerais, Minas Gerais, Brazil; Neurosurgery Service, Hospital das Clínicas, Universidade Federal de Minas Gerais, Minas Gerais, Brazil. 3. Neurosurgery Service, Hospital Pronto-Socorro João XXIII, Belo Horizonte, Minas Gerais, Brazil.
Abstract
OBJECTIVE: To identify infection incidence and related risk factors in patients who underwent cranioplasty (CP) after unilateral decompressive craniectomy (DC). METHODS: CP after DC was performed in 45 patients from April 2011 through January 2012. The covariates studied were compared with occurrence versus nonoccurrence of infection. Univariate analysis was performed, followed by a multivariate analysis and development of independent logistic regression models with significance of 5%. RESULTS: Wound infections were observed in 24% of cases. Patients treated with polymethyl methacrylate flaps had a 31% rate of infection compared with 12% in patients treated with autologous flaps, but the difference was not statistically significant (P = 0.279). Increased risk of infection was associated with performing CP during the same period of hospitalization as DC (45% vs. 8%; P = 0.006), recent systemic infection (53% vs. 10%; P = 0.003), a Glasgow Outcome Scale score lower than 4 (48% vs. none; P < 0.001), motor deficit (42% vs. 5%; P = 0.011), and lower levels of hemoglobin (P < 0.001). Another risk factor for infection was an interval between DC and CP of 29-84 days compared with >168 days (P = 0.007). CONCLUSIONS: The incidence of wound infection was high. Risk factors included motor deficits, Glasgow Outcome Scale score <4, lower hemoglobin levels, recent systemic infections, interval between DC and CP of 29-84 days, and DC and CP performed during the same hospitalization. Performing CP during a different hospitalization may reduce the risk of graft infection because the hemoglobin level would be higher, and patients would be less dependent and free of recent infection.
OBJECTIVE: To identify infection incidence and related risk factors in patients who underwent cranioplasty (CP) after unilateral decompressive craniectomy (DC). METHODS: CP after DC was performed in 45 patients from April 2011 through January 2012. The covariates studied were compared with occurrence versus nonoccurrence of infection. Univariate analysis was performed, followed by a multivariate analysis and development of independent logistic regression models with significance of 5%. RESULTS: Wound infections were observed in 24% of cases. Patients treated with polymethyl methacrylate flaps had a 31% rate of infection compared with 12% in patients treated with autologous flaps, but the difference was not statistically significant (P = 0.279). Increased risk of infection was associated with performing CP during the same period of hospitalization as DC (45% vs. 8%; P = 0.006), recent systemic infection (53% vs. 10%; P = 0.003), a Glasgow Outcome Scale score lower than 4 (48% vs. none; P < 0.001), motor deficit (42% vs. 5%; P = 0.011), and lower levels of hemoglobin (P < 0.001). Another risk factor for infection was an interval between DC and CP of 29-84 days compared with >168 days (P = 0.007). CONCLUSIONS: The incidence of wound infection was high. Risk factors included motor deficits, Glasgow Outcome Scale score <4, lower hemoglobin levels, recent systemic infections, interval between DC and CP of 29-84 days, and DC and CP performed during the same hospitalization. Performing CP during a different hospitalization may reduce the risk of graft infection because the hemoglobin level would be higher, and patients would be less dependent and free of recent infection.
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