Effect of paracetamol, dexketoprofen trometamol, lidocaine spray, and paracervical block application for pain relief during suction termination of first-trimester pregnancy

Local anaesthesia for pain control in surgical abortion before 14 weeks of pregnancy: a systematic review

BACKGROUND

Abortions are common and associated with procedural pain. We aimed to evaluate benefits and harms of local anaesthesia given for pain control during surgical abortion at less than 14 weeks' gestation.

METHODS

We searched a systematic review on local anaesthesia for pain control for surgical abortion at less than 14 weeks' gestation using uterine aspiration. We searched multiple databases through December 2022. We evaluated study quality using the Cochrane Risk of Bias 2 (RoB2) instrument and assessed the certainty of evidence using GRADE (Grading of Recommendations Assessment, Development and Evaluation). Outcomes included intraoperative pain (with dilation, aspiration or procedure), patient satisfaction and adverse events.

RESULTS

Thirteen studies with 1992 participants met the inclusion criteria and the majority were judged as low risk of bias. Intervention protocols were heterogeneous, limiting meta-analysis. A 20 mL 1% lidocaine paracervical block (PCB) reduced pain with dilation compared with sham PCB (mean difference (MD) -37.00, 95% CI -45.64 to -28.36) and aspiration (MD -26.00, 95% CI -33.48 to -18.52; 1 randomised controlled trial (RCT), n=120; high-certainty evidence). A PCB with 14 mL 1% chloroprocaine was associated with a slight reduction in pain during aspiration compared with normal saline PCB injected at two or four sites (MD -1.50, 95% CI -2.45 to -0.55; 1 RCT, n=79; high-certainty evidence). Other RCTs compared a range of local anaesthetic types, PCB techniques and topical anaesthetics. Participants reported moderately high satisfaction with any type of pain control and studies reported few adverse events that were rarely medication-related.

CONCLUSION

RCT evidence supports PCB efficacy but was inconsistent and of low certainty for topical anaesthesia.

A comparative study on the effectiveness of paracervical block and parenteral diclofenac for pain relief during manual vacuum aspiration

Objective

To compare the effectiveness of paracervical block with intramuscular Diclofenac for pain relief during manual vacuum aspiration (MVA) for early pregnancy losses.

Methodology

This was an open label randomized controlled trial. Participants were randomized into two therapeutic groups (A and B) using computer generated numbers. Group A received intramuscular Diclofenac 75 mg. Group B received paracervical block using 1% Lidocaine. Participants were asked to rate their pain level on a continuous 10 cm visual analogue scale (VAS) from 0 (no pain) to 10 (the worst pain ever) within 5 minutes of completing the procedure. Participants' level of satisfaction was assessed within 30 minutes of completing the MVA using Likert scale. Data was analysed using the Statistical Package for Social Sciences (SPSS), Version 20. Test of statistical significance was set at 95% confidence level (P < 0.05). The primary outcome was the level of pain felt by the patient during the procedure (10 cm VAS). Secondary outcomes included patient's satisfaction and adverse events.

Results

There was significant difference in the mean pain level between the intramuscular diclofenac group; 6.5±1.5 (moderate) and those that received paracervical block; 2.3±1.5 (mild), (p-value=0.005). Patients' satisfaction was also better in paracervical block group compared to intramuscular diclofenac group, (p-value=0.005). Both groups were comparable in terms of complications and drug side effects.

Conclusion

Findings from the study suggest that the use of paracervical block compared to intramuscular Diclofenac for pain relief during MVA for incomplete miscarriage significantly reduced pain, improved patients' satisfaction and was comparably safe.

Pain management for medical and surgical termination of pregnancy between 13 and 24 weeks of gestation: a systematic review

Background

High‐quality care for termination of pregnancy (TOP) requires pain to be effectively managed; however, practices differ, and the available guidelines do not specify optimal strategies.

Objective

To guide providers in effective pain management for second‐trimester medical and surgical TOP.

Search strategy

We searched PubMed, Cochrane and Embase databases, and the US National Library of Medicine clinical trials registry, from inception to the end of June 2019, and hand‐searched reference lists.

Selection criteria

Trials comparing pain management strategies with no treatment, placebo or active interventions during induced medical or surgical TOP, occurring between 13 and 24 weeks of gestation, and reporting direct or indirect measures of pain.

Data collection and analysis

Both authors summarised and systematically assessed the evidence and risk of bias using standard tools.

Main results

We included seven medical and four surgical TOP studies, with 453 and 349 participants, respectively. The heterogeneity of interventions and outcomes prevented pooled analyses. Medical TOP: women receiving routine or continuous epidural analgesia experienced mild pain. The prophylactic use of nonsteroidal anti‐inflammatory drugs (NSAIDs) decreased pain (mean difference −0.5, P < 0.001) and additional opioid requirements (3.5 versus 7 mg, P = 0.04) compared with placebo/other treatment. Paracervical block was ineffective. No studies assessed intramuscular (IM)/intravenous (IV) opioid or nonpharmacological treatment. Surgical TOP: general anaesthesia/deep IV sedation alleviated pain. Nitrous oxide was ineffective. No studies assessed moderate IV sedation, IV/IM opioid, paracervical block without sedation, NSAID or nonpharmacological treatment.

Conclusion

Based on limited data, regional analgesia and NSAIDs mitigated second‐trimester medical TOP pain; general anaesthesia/deep IV sedation alleviated surgical TOP pain.

Tweetable abstract

Although women experience intense pain during second‐trimester termination of pregnancy, few data are available to inform their treatment.

Although women experience intense pain during second‐trimester termination of pregnancy, few data are available to inform their treatment.

Effect of paracetamol, dexketoprofen trometamol, lidocaine spray, pethidine & diclofenac sodium application for pain relief during fractional curettage: A randomized controlled trial

Background & objectives:

Patients frequently experience pain of moderate to severe degree during gynaecologic procedures. This prospective, randomized, placebo-controlled trial was aimed to investigate the analgesic efficacy of preoperative oral dexketoprofen trometamol, intravenous paracetamol, lidocaine spray, pethidine and diclofenac sodium on fractional curettage procedure.

Methods:

A total of 144 mutiparous women were randomly allocated to one of the six groups. The first group (control group) consisted of 22 participants and they did not receive any treatment. The second group had 26 participants receiving oral 25 mg dexketoprofen trometamol. The 23 participants of the third group received two puff lidocaine sprays on cervical mucosa. The forth group consisted of 25 participants receiving 100 mg pethidine. In the fifth group, the 23 participants received 1000 mg intravenous paracetamol and the sixth group consisted of 25 participants receiving diclofenac sodium.

Results:

Pethidine was the best choice for reducing pain score during curettage procedure (t2:intra-operative). All analgesic procedures were significantly effective in reducing pain during postoperative period (t3). Significant pain reduction was achieved for both intra- and postoperative period by using analgesics.

Interpretation & conclusions:

The results of our study showed that lidocaine puffs provided the best pain relief than the other analgesics used. Therefore, lidocaine may be considered as the first choice analgesic in fractional curettage (NCT ID: 01993589).