Local Anesthesia and Pain Perception During an Amniocentesis

04:31 EDT 30th August 2014 | BioPortfolio

Summary

This study is been designed to answer the question of whether local anesthesia (1% lidocaine) decreases the perception of pain associated with amniocentesis in a randomized double blind placebo controlled manner. Our objective is to determine the effect of local anesthesia on the maternal pain perception from an amniocentesis.

Description

Women meeting criteria for project and agreeing to treatment will be randomized into either the 1% Lidocaine or placebo(normal saline) group. The initial injection of either 1% lidocaine or placebo (normal saline) will be administered 2 minutes prior to the amniocentesis procedure. 2cc of 1% lidocaine or placebo (normal saline) will be initially administered as an intradermal "wheal", followed by a deeper infiltration of the 1% lidocaine or placebo (normal saline) to the depth of the peritoneum. All procedures will be performed by either the Maternal-Fetal medicine (MFM) or the reproductive geneticist utilizing continuous ultrasound guidance under sterile conditions. Each woman will be asked to rate their pain perception immediately after the procedure on two pain scales.

Study Design

Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Diagnostic

Conditions

Pregnancy

Intervention

Local anesthesia - lidocaine, Placebo Group

Location

University of Oklahoma Health Sciences Center
Oklahoma City
Oklahoma
United States
73104

Status

Recruiting

Source

University of Oklahoma

Results (where available)

View Results

Links

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Medical and Biotech [MESH] Definitions

A local anesthetic that is similar pharmacologically to LIDOCAINE. Currently, it is used most often for infiltration anesthesia in dentistry. (From AMA Drug Evaluations Annual, 1992, p165)

A local anesthetic that is chemically related to BUPIVACAINE but pharmacologically related to LIDOCAINE. It is indicated for infiltration, nerve block, and epidural anesthesia. Mepivacaine is effective topically only in large doses and therefore should not be used by this route. (From AMA Drug Evaluations, 1994, p168)

A local anesthetic of the amide type now generally used for surface anesthesia. It is one of the most potent and toxic of the long-acting local anesthetics and its parenteral use is restricted to spinal anesthesia. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1006)

A local anesthetic and cardiac depressant used as an antiarrhythmia agent. Its actions are more intense and its effects more prolonged than those of procaine but its duration of action is shorter than that of bupivacaine or prilocaine.

A colorless liquid with a sharp burning taste and slight odor. It is used as a local anesthetic and to reduce pain associated with LIDOCAINE injection. Also, it is used in the manufacture of other benzyl compounds, as a pharmaceutic aid, and in perfumery and flavoring.

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