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Abstract Meningitis is a potential complication of elective intracranial surgery (EIS). The prevalence of meningitis after EIS varies greatly in the literature. The objective of this study was to estimate the overall pooled prevalence of meningitis following EIS. Four databases (PubMed, Scopus, Web of Science, and Embase) were searched to identify relevant studies. Meta-analyses of proportions were used to combine data. Cochran's Q and I 2 statistics were used to assess and quantify heterogeneity. Additionally, several subgroup analyses were conducted to investigate the source of heterogeneity and examine differences in the prevalence based on variables such as geographical regions, income level, and meningitis type. The meta-analysis included 83 studies (30 959 patients) from 26 countries. The overall pooled prevalence of meningitis after EIS was 1.6% (95% CI 1.1–2.1), with high heterogeneity present (I 2 = 88%). The pooled prevalence in low- to middle-income countries and high-income countries was 2.7% (95% CI 1.6–4.1) and 1.2% (95% CI 0.8–1.7), respectively. Studies that reported only aseptic meningitis had a pooled prevalence of 3.2% (95% CI 1.3–5.8). The pooled prevalence was 2.8% (95% CI 1.5–4.5) in studies that reported only bacterial meningitis. Similar prevalence rates of meningitis were observed in the subgroups of tumor resection, microvascular decompression, and aneurysm clipping. Meningitis is a rare but not exceptional complication following EIS, with an estimated prevalence of 1.6%.

Meningitis is a potential complication of elective intracranial surgery (EIS). The prevalence of meningitis after EIS varies greatly in the literature. The objective of this study was to estimate the overall pooled prevalence of meningitis following EIS. Four databases (PubMed, Scopus, Web of Science, and Embase) were searched to identify relevant studies. Meta-analyses of proportions were used to combine data. Cochran's Q and I2 statistics were used to assess and quantify heterogeneity. Additionally, several subgroup analyses were conducted to investigate the source of heterogeneity and examine differences in the prevalence based on variables such as geographical regions, income level, and meningitis type. The meta-analysis included 83 studies (30 959 patients) from 26 countries. The overall pooled prevalence of meningitis after EIS was 1.6% (95% CI 1.1–2.1), with high heterogeneity present (I2 = 88%). The pooled prevalence in low- to middle-income countries and high-income countries was 2.7% (95% CI 1.6–4.1) and 1.2% (95% CI 0.8–1.7), respectively. Studies that reported only aseptic meningitis had a pooled prevalence of 3.2% (95% CI 1.3–5.8). The pooled prevalence was 2.8% (95% CI 1.5–4.5) in studies that reported only bacterial meningitis. Similar prevalence rates of meningitis were observed in the subgroups of tumor resection, microvascular decompression, and aneurysm clipping. Meningitis is a rare but not exceptional complication following EIS, with an estimated prevalence of 1.6%. [ABSTRACT FROM AUTHOR]

Background and Aims: Respiratory complications are of major concern after intracranial procedures. The objective of the study was to assess the incidence of respiratory complications in the initial 72 hours after elective craniotomies and to identify the associated risk factors. Materials and Methods: Patients undergoing elective craniotomies were studied prospectively. Information pertinent to history, physical examinations, investigation reports, perioperative events and outcome at discharge of the patients were recorded. Occurrence of any sign or symptom of respiratory system, need for reintubation/increased ventilatory support within 72 hours of surgery were considered as post-operative respiratory complication. Relationships of numerical variables and categorical variables with post-operative respiratory complications (PRCs) were assessed via T test and Chi-square (or Fisher’s exact). Multivariate analysis using multiple logistic regression was performed for finding independent risk factors for respiratory complications. Results: Out of 961 patients, 137 (14.3%) patients developed PRC within 72 hours of surgery. Ninety-nine (10.3%) patients developed purulent tracheobronchitis. The patients who had PRC had longer hospital stays and poor Glasgow Outcome Scale at hospital discharge. The variables found as independent risk factors were tachycardia, blood transfusion in the intraoperative period and Glasgow Coma Scale (GCS) deterioration, hypokalemia and fever in the post-operative period. Conclusions: Respiratory complications within first 72 hours of elective craniotomies were common and were associated with prolonged hospital stay and poor neurological outcome. The variables which were found as independent risk factors were tachycardia, blood transfusion in the intraoperative period and GCS deterioration, hypokalemia and fever in the post-operative period.