Dosing of hyperbaric prilocaine 2% for perianal surgery in an ambulatory setting

Comparison of 0.5ml vs. 1.0ml vs. 1.5ml hyperbaric prilocaine 2% for spinal saddle block in patients undergoing perianal surgery in an ambulatory setting

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN95628829

Enrollment

120

Registered

2011-06-06

Start date

2010-12-07

Completion date

Unknown

Last updated

2015-01-13

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

Conditions

Colorectal diseases Digestive System Colorectal diseases

Interventions

Participants are randomised (1:1:1) to a dose of either 0.5ml or 1.0ml or 1.5ml of hyperbaric prilocaine 2%. The expansion of anaesthesia is tested with a toothpick and an ice-filled plastic tube.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Patients (male/female) undergoing minor perianal surgery 2. Age: 18-80 years 3. American Society of Anesthesiologists (ASA) physical status I-III 4. No contraindications for spinal anaesthesia

Exclusion criteria

Exclusion criteria: 1. Contraindications for spinal anaesthesia 2. Allergy to diclofenac

Design outcomes

Primary

Measure	Time frame
Expansion of anaesthesia tested with a toothpick and an ice-filled plastic tube. The expansion of anaesthesia is tested at two points of time: 1. After positioning of the patient for operation 2. Directly after the procedure has ended	—

Secondary

Measure	Time frame
1. Practicability 2. Postoperative analgetic consumption 3. Duration of stay in hospital	—

Countries

Germany

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026