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The efficacy of paracervical injections of lignocaine before laser ablation of the cervical transformation zone. A randomized placebo‐controlled double‐blind clinical trial
Author(s) -
JOHNSON N.,
CROMPTON A. C.,
RAMSDEN S.V.E.
Publication year - 1989
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.1989.tb06304.x
Subject(s) - medicine , saline , anesthesia , placebo , visual analogue scale , randomized controlled trial , ablation , double blind , surgery , alternative medicine , pathology
Summary In a prospective double‐blind randomized placebo‐controlled clinical trial the efficacy of paracervical lignocaine was compared with saline in reducing pain in 70 women undergoing laser ablation of the cervical transformation zone. Paracervical lignocaine had no significant measurable effect on reducing the pain experience during the laser procedure. The mean subjective visual linear analogue pain score in the lignocaine and saline groups was 27% (95% CI 17 to 38) and 30% (95% CI 24 to 41) respectively ( t = 1·0; P = 0·35). The median (quartiles) objective pain scores for the same groups were 0 (0‐2) and 0 (0‐1) respectively ( P = 0·58).