Assessing Continuous Epidural Infusion and Programmed Intermittent Epidural Bolus for Their Effectiveness in Providing Labor Analgesia: A Mono-Centric Retrospective Comparative Study

Author:

Tsao Shao-Lun12,Li Wen-Tyng2ORCID,Chang Li-Yun1,Yeh Pin-Hung134ORCID,Yeh Liang-Tsai134ORCID,Liu Ling-Jun15,Yeh Chao-Bin367ORCID

Affiliation:

1. Department of Anesthesiology, Changhua Christian Hospital, Changhua 500, Taiwan

2. Department of Biomedical Engineering, Chung Yuan Christian University, Taoyuan City 320, Taiwan

3. Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan

4. Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 402, Taiwan

5. Department of Statistics, Tung Hai University, Taichung 407, Taiwan

6. School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan

7. Department of Emergency Medicine, Chung Shan Medical University Hospital, Taichung 402, Taiwan

Abstract

Background and Objectives: Local anesthetics administered via epidural catheters have evolved from intermittent top-ups to simultaneous administration of continuous epidural infusion (CEI) and patient-controlled epidural analgesia (PCEA) using the same device. The latest programmed intermittent epidural bolus (PIEB) model is believed to create a wider and more even distribution of analgesia inside the epidural space. The switch from CEI + PCEA to PIEB + PCEA in our department began in 2018; however, we received conflicting feedback regarding workload from the quality assurance team. This study aimed to investigate the benefits and drawbacks of this conversion, including the differences in acute pain service (APS) staff workload, maternal satisfaction, side effects, and complications before and after the changeover. Materials and Methods: Items from the APS records included total delivery time, average local anesthetic dosage, and the formerly mentioned items. The incidence of side effects, the association between the duration of delivery and total dosage, and hourly medication usage in the time subgroups of the CEI and PIEB groups were compared. The staff workload incurred from rescue bolus injection, catheter adjustment, and dosage adjustment was also analyzed. Results: The final analysis included 214 and 272 cases of CEI + PCEA and PIEB + PCEA for labor analgesia, respectively. The total amount of medication and average hourly dosage were significantly lower in the PIEB + PCEA group. The incidences of dosage change, manual bolus, extra visits per patient, and lidocaine use for rescue bolus were greater in the PIEB + PCEA group, indicating an increased staff workload. However, the two groups did not differ in CS rates, labor time, maternal satisfaction, and side effects. Conclusions: This study revealed that while PIEB + PCEA maintained the advantage of decreasing total drug doses, it inadvertently increased the staff burden. Increased workload might be a consideration in clinical settings when choosing between different methods of PCEA.

Funder

Changhua Christian Hospital

Publisher

MDPI AG

Subject

General Medicine

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