Nonpharmaceutical Pain Control Adjuncts During First-Trimester Aspiration Abortion: A Review

Helping patients choose between pain control options for outpatient procedural abortion at less than 12 weeks' gestation

OBJECTIVES

This study aimed to identify predictors of patient satisfaction with their chosen pain control regimen for procedural abortion at <12 weeks' gestation in the outpatient setting.

STUDY DESIGN

In this prospective cohort study, we developed an instrument to evaluate predictors of satisfaction with pain control regimens among patients choosing local anesthesia alone (paracervical block with 20 mL of 1% buffered lidocaine) or local anesthesia plus intravenous (IV) moderate sedation with 100 mcg of fentanyl and 2 mg of midazolam. Our primary outcome was to identify predictors of satisfaction with both anesthesia cohorts as measured on a 4-point Likert scale, but due to high satisfaction levels in the IV group, we focused our analysis on the local anesthesia group.

RESULTS

We enrolled 149 patients in the local anesthesia group and 155 in the moderate IV sedation group. The mean procedure pain scores were 6.9 (±2.1) out of 10 in the local group and 4.0 (±2.7) in the IV group (p < 0.0001). More women in the IV group (92%) were satisfied or very satisfied with the amount of pain relief they experienced compared to the local group (66%; p < 0.0001). In the univariable model, only being afraid of a minor medical procedure was predictive of less satisfaction with local anesthesia for pain control (relative risk 0.8 [95% CI, 0.6-0.9]). Age, gestational age, anticipated pain, self-reported pain tolerance, self-reported anxiety, discomfort with the abortion decision, and history of prior vaginal or cesarean delivery or induced abortion did not predict satisfaction levels.

CONCLUSIONS

Fear of minor medical procedures was the only variable that predicted decreased satisfaction with local anesthesia alone for procedural abortion under 12 weeks.

IMPLICATIONS

Reliable predictors for satisfaction with local anesthesia alone for procedural abortion in the outpatient setting remain elusive. Fear of minor medical procedures may serve as an indicator of decreased satisfaction and could be incorporated into patient counseling. Moderate IV sedation is associated with high satisfaction levels.

Transcutaneous Electrical Nerve Stimulation for Pain Management of Aspiration Abortion up to 83 Days of Gestation: A Randomized Controlled Trial

OBJECTIVE

To evaluate high-frequency, high-intensity transcutaneous electrical nerve stimulation (TENS) as an inexpensive, noninvasive pain management approach for first-trimester aspiration abortion.

METHODS

We conducted a noninferiority, single-blind, randomized controlled trial of patients seeking aspiration abortion at up to 83 days of gestation. Participants received TENS (placed posteriorly, T10-L1 and S2-S4) or intravenous (IV) sedation (fentanyl, midazolam). The primary outcome was pain with aspiration, as self-reported by visual analog scale (VAS, 100 mm). To detect at least a 15 mm mean difference on the 100 mm VAS with 90% power and a significance level of .05, a total of 90 participants were required.

RESULTS

Between January 2018 and October 2019, we enrolled 109 participants (55 TENS, 54 IV). Participant median gestation was 53 days (range 36-82) in the TENS group and 58 days (range 35-82) in the IV group (P=.65). Group demographics and clinical histories were similar. Intention-to-treat analysis (n=109) yielded noninferior results for the primary outcome (mean difference 4.8 mm, 95% CI -5.9 to 13.5 mm). In the per-protocol analysis, 9 (16%) in the TENS group were excluded after receiving IV sedation; 100 participants were included (46 TENS, 54 IV). Median (range) reported VAS for aspiration was 73 mm (13-97) and 66 mm (0-99) in the TENS and IV groups, respectively (P=.40). With a mean difference of 4.4 mm (95% CI -5.6 to 14.5 mm), we found TENS to be noninferior to IV. Physicians underestimated participant pain, perceiving pain to be 34 mm (6-91) in the TENS group and 25 mm (0-83) in the IV group (P=.003).

CONCLUSION

We found TENS to be a noninferior alternative to IV sedation for aspiration pain during first-trimester abortion. Expanding pain management options can improve quality of and access to abortion. Transcutaneous electrical nerve stimulation could be a standalone or adjunct approach for abortion pain management for those without access to or are ineligible to receive IV sedation due to the lack of sedation practitioner, designated driver, or local restrictions.

CLINICAL TRIAL REGISTRATION

ClinicalTrials.gov, NCT03187002.

Non-pharmacological anxiety reduction with immersive virtual reality for first-trimester dilation and curettage: a pilot study

OBJECTIVES

Most women experience moderate to severe pain during first-trimester surgical termination of pregnancy despite the application of various analgesic techniques. Studies have shown that virtual reality (VR) is effective in reducing anxiety among a range of women in differing circumstances. Our study objectives were to assess the feasibility of using VR during first-trimester dilation and curettage under local anaesthesia and understand the effect of VR on procedure-related anxiety during first-trimester dilation and curettage.

METHODS

A pilot feasibility study was conducted in a convenience sample of 30 women (15 in the intervention group and 15 in the control group). Anxiety scores were recorded before, during and after the procedure. In-depth interviews were conducted after the procedure.

RESULTS

Participants reported that VR was either very effective (53%) or somewhat effective (40%) in relieving anxiety during and after the procedure. Eleven participants used the VR device for the entire procedure and four participants removed it during the procedure. The anxiety scores before the procedure were not significantly different between the groups. The intervention group had a median five point post-procedure decrease in anxiety score rated on a visual analogue scale, which was significantly different from that of the control group. Overall, participants had a positive experience but there were some technological frustrations.

CONCLUSION

Women undergoing dilation and curettage in the first trimester were able to use a VR device during the procedure. VR-induced distraction and relaxation helped to reduce anxiety in some participants both during and after the procedure.