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Intrathecal Injection of Hyperbaric Prilocaine Versus Hyperbaric Bupivacaine for Cystoscopic Procedures

Comparison Between Intrathecal Injection of Hyperbaric Prilocaine Versus Hyperbaric Bupivacaine for Cystoscopic Procedures: A Prospective Randomized Controlled Trial

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07664618
Enrollment
100
Registered
2026-06-24
Start date
2024-04-01
Completion date
2025-05-31
Last updated
2026-06-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cystoscopic Procedures, Hyperbaric Bupivacaine, Hyperbaric Prilocaine, Intrathecal Injection

Brief summary

This study aims to compare the intrathecal injection of hyperbaric prilocaine 2% versus hyperbaric bupivacaine 0.5% in cystoscopy procedures.

Detailed description

Cystoscopy is a short surgical procedure in the field of urology that is very frequently performed. Spinal anesthesia (SA) is the choice because it has an easy implementation technique, fast onset, and low complications compared to general anesthesia. One of the spinal anesthetic regimens often used is 0.5% hyperbaric bupivacaine, which has a two-segment regression time of around 65 minutes and requires 164 minutes for complete regression to the sacral dermatomes. However, bupivacaine, when used for relatively short procedures, causes various disadvantages including prolonged effects. Prilocaine is an alternative to bupivacaine in short surgical procedures, including cystoscopy. It has a profile similar to lidocaine but with less neurotoxicity.

Interventions

DRUGBupivacaine

Patients received 0.5% bupivacaine hyperbaric (2.5 ml) + fentanyl 25 µg (0.5 ml).

Patients received hyperbaric 2% prilocaine (2.5 ml) + fentanyl 25 µg (0.5 ml).

Sponsors

Helwan University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Age from 18 to 65 years. * Both Sexes. * American Society of Anesthesiologists (ASA) physical status I-II. * Normal body mass index (BMI) 18-25. * Undergoing cystoscopic procedure under spinal anesthesia.

Exclusion criteria

* \- Patient's refusal. * History of allergy to local anesthetics (hyperbaric prilocaine or hyperbaric bupivacaine). * History of impaired gait before the study. * Contraindications to SA including :- * Coagulopathy. * Elevated intracranial pressure (ICP). * Infection at the site. * Spinal cord disorder. * Severe hypovolemia. * Uncontrolled hypertension systolic ≥ 140 mmHg or diastolic ≥ 90 mmHg. * Uncontrolled Diabetes mellitus HbA1c ≥ 8.5%

Design outcomes

Primary

MeasureTime frameDescription
Recovery timeTill discharge (Up to 4 hours)Recovery time defined as the time required until the patient is ready for discharge.

Secondary

MeasureTime frameDescription
Incidence of side effects24 hours postoperativelyIncidence of side effects such as hypotension, bradycardia, nausea, vomiting, pruritus, and urinary retention were recorded.
Noninvasive Blood pressureTill discharge from hospital (Up to 2 hours)Noninvasive Blood pressure was monitored every 3 min for the first 15 minutes.
Heart rateTill discharge from hospital (Up to 2 hours)Heart rate was monitored every 3 min for the first 15 minutes.
Degree of patient satisfaction24 hours postoperativelyDegree of patient satisfaction was assessed on a 4-point scale (1, excellent; 2, good; 3, fair; 4, poor).

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 25, 2026