Incidence and risk factors of postdural puncture headache: prospective cohort study design

Abstract

BACKGROUND Postdural puncture headache is one of the complications following spinal anesthesia and accidental dural puncture. Several modifiable risk factors contribute to the development of headache after lumbar puncture, which includes needle size, needle design, direction of the bevel, and number of lumbar puncture attempts. This study aimed to assess the incidence and risk of postdural puncture headache. METHODS This prospective cohort study design was conducted using a consecutive sampling method. Regular supervision and follow-up were performed. Data were entered into Epi info version 7 software and transported to SPSS version 20 for analysis. The odds ratio and 95% confidence interval were computed. The findings of the study were reported using tables, figures, and narrations. Variables that were found to be candidates (p value < 0.25) on binary logistic regression entered into a multiple logistic regression analysis to identify independent predictors of postdural puncture headache. RESULTS One hundred fifty eligible study participants were included in our study, of which 28.7% had developed postdural puncture headache. This study found that needle size, number of cerebrospinal fluid drops, and multiple attempts were significant independent predictors of postdural puncture headache (p < 0.05). In addition, twenty-five needles were identified as the strongest preoperative independent predictor of postdural puncture headache (AOR = 4.150, CI = 1.433-12.021) CONCLUSIONS: A recent study revealed that a small spinal needle was much better than a large cutting spinal needle regarding the frequency of postdural puncture headache. In addition, frequent attempts during lumbar puncture and increased cerebrospinal fluid leakage were associated with the events. In view of this, we recommend the use of a small spinal needle to avoid more leakage of cerebrospinal fluid and multiple attempts at spinal anesthesia and lumbar puncture.