Effect of Auto-Bolus Interval on Analgesic Quality During Labor Analgesia With Dural Puncture Epidural

Ataturk University

Status: Enrolling

Conditions: Analgesia

Treatments: Procedure: Group I: 30 Min Interval Time; Procedure: Group II: 60 Min Interval Time

Study type: Interventional

Funder types: Other

Identifiers

NCT06329713

2024-03/11

Details and patient eligibility

About

It is aimed in this study to compare the effect of changing the interval time for programmed auto boluses of local anaesthetics on the total anesthetic consumption and quality of labor analgesia with dural puncture epidural technique.

Full description

This study will be conducted as a prospective randomized, controlled, double-blind trial following the approval of the ethical committee at Atatürk University Medical Faculty Hospital and after obtaining written consent from the participating patients. The study will include pregnant women aged 20 to 45 with American Society of Anesthesiologists (ASA) II classification, full-term, nulliparous and singleton pregnancies. Using a randomisation procedure, the participants will be allocated into two equal groups: Group I and Group II.

Enrollment: 54 estimated patients

Sex: Female

Ages: 25 to 45 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

1. Healthy nulliparous women
2. American Society of Anaesthesiology Score of II
3. During active labor
4. At weeks 37-42.
5. Singlet vertex presentation
6. Cervical dilation <5 cm at the request of labor analgesia
7. VAS score >40

Exclusion criteria

1. Age <20 or >45,
2. Morbid obesity
3. Presence of pregnancy-related comorbidities (e.g: gestational diebetes, gestational hypertension and preeclampsia)
4. History of drug abuse
5. Contrindication for neuraxial blocks
6. Conditions that increase the risk of need for cesarean section (e.g. placenta previa, uterus abnormalities or surgeries)
7. Diagnosed fetal abnormalities
8. Cases where dura gets punctured unintendedly with the epiduralneedle
9. Cases where flow of cerebrospinal fluid (CSF) is not observed after dural puncture
10. Cases where a cesarean section is performed at any stage of labor
11. Cases where labor is completed in 1 hour from the start of analgesia procedure.

Exclusion Criteria:

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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54 participants in 2 patient groups

30-Min Interval

Active Comparator group

Description:

The patients will be given 10 ml of a solution containing 0,1% of bupivacaine and 2 mcg/ml fentanyl through the epidural cathether. Level of sensory block will be tested by testing with ice from S2 dermatome cephally. Analgesia will be maintained by programmed intermittant epidural (PIE) boluses of 7,5 ml of 0,0625% of bupivacaine and 2 mcg/ml fentanyl every 30 minutes, starting 1 hour after the loading dose. In addition, patient controlled epidural analgesia (PCEA) will be programmed so that 8 ml of the same solution with a lock-time of 15 minutes may be administered. "Breakthrough pain" that requires even further analgesia will be treated with an epidural bolus of 10 ml of 0,1% bupivacain solution.

Treatment:

Procedure: Group I: 30 Min Interval Time

60-Min Interval

Active Comparator group

Description:

The patients will be given 10 ml of a solution containing 0,1% of bupivacaine and 2 mcg/ml fentanyl through the epidural cathether. Level of sensory block will be tested by testing with ice from S2 dermatome cephally. Analgesia will be maintained by programmed intermittant epidural boluses of 15 ml of 0,0625% of bupivacaine and 2 mcg/ml fentanyl once in every hour, starting 1 hour after the loading dose. In addition, patient controlled epidural analgesia (PCEA) will be programmed so that 8 ml of the same solution with a lock-time of 15 minutes may be administered. "Breakthrough pain" that requires even further analgesia will be treated with an epidural bolus of 10 ml of 0,1% bupivacain solution.

Treatment:

Procedure: Group II: 60 Min Interval Time