The impact of patient positioning during spinal anesthesia induction on the incidence and severity of post-dural puncture headache and hemodynamic stability: a prospective cohort study.

Similarly, nausea and vomiting were more common in Group S (9 patients, 21.4%) than in Group L (6 patients, 14.3%), but the difference did not reach statistical significance ( p = 0.45) (Table 4 ).

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Multiple puncture attempts also showed a trend toward increased PDPH risk, although this did not reach statistical significance.

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