This pilot randomised controlled trial compared sphenopalatine ganglion block (SPGB) using intranasal 2% lidocaine versus conservative management (bed rest and aggressive hydration) in patients who developed post-dural puncture headache (PDPH) following accidental dural puncture with 17G Tuohy needles during epidural procedures. The primary outcomes were feasibility metrics (recruitment, retention, and protocol adherence). Secondary outcomes included pain intensity measured by the Numerical Rating Scale (NRS 0-10) at 30 minutes, 12 hours, and 24 hours post-intervention; rescue analgesia requirements; mobilisation time; and adverse events.
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Feasibility: recruitment rate
Timeframe: At study completion (enrolment period)
Feasibility: retention rate
Timeframe: At 24 hours post-intervention (T3)
Feasibility: protocol adherence
Timeframe: Throughout the 24-hour observation period