A risk index for pregnancy during anesthesia

Area of Science:

• Anesthesiology
• Obstetrics and Gynecology
• Radiology

Background:

• Current guidelines for preoperative pregnancy testing vary.
• The validity of age-based restrictions for pregnancy testing before anesthesia requires evaluation.
• Understanding pregnancy incidence across different age groups is crucial for patient safety.

Purpose of the Study:

• To assess the validity of limiting pregnancy testing to females over 14 years old.
• To determine the incidence of pregnancy in patients receiving anesthesia across various age groups.
• To calculate a relative risk index for pregnancy in patients undergoing anesthesia.

Main Methods:

• A retrospective chart review was conducted.
• Data were collected from the Department of Anesthesiology at Louisiana State University Medical Center in Shreveport.
• Patient demographics, anesthetic administration records, and pregnancy status were analyzed.

Main Results:

• Of 16,033 anesthetics, 1,968 were administered to 1,849 pregnant patients (ages 13-44).
• One patient conceived at age 12.
• Pregnancy rates in 13- and 14-year-olds were comparable to those in their 30s and 40s.

Conclusions:

• The findings support preoperative pregnancy testing for all patients aged 12-44 years.
• While ethical and practical considerations exist, universal testing ensures identification of pregnancy before anesthesia.
• Radiology departments' policies on pregnancy testing warrant review for consistency with anesthetic care guidelines.