Volume Effect in Peng Block for Total Hip Replacement

Azienda Ospedaliero, Universitaria Pisana120 enrolled

Overview

This study is to investigate whether a different volume of ropivacaine, with the same prescribed dosage based on body weight, can affect block efficacy, duration and side effects in the first 24 hours postoperatively.

patients were divided into 3 groups on the basis of the volume of anesthetic given to perform the block. in every patient was assessed the nrs, the side effects, if any, and the need for analgesic drugs in the first 24 hour after surgery

Study Type

OBSERVATIONAL

Enrollment

120

Conditions

Anesthesia Post Operative Pain

Interventions

RopivacaineDRUG

The local anesthetic was dosed on the patient's weight (50-59kg: 120mg, 60-61kg: 140mg, 70-79kg: 160mg, ≥80kg: 180mg)

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * ASA I, ASA II, ASA III * Age≥18 * Total hip replacement surgery in spinal anesthesia * Informed consent Exclusion Criteria: * ASA IV * INR\>1.3 * platelet values\<100\*10\^3/ml a * patients on anticoagulant or antiplatelet therapy * general anesthesia for total hip replacement surgery * patients on chronic opioid therapy * altered sensitivity or motility * Patients in chronic opioid therapy * Refuse to sign informed consent form * Unable to sign informed consent form * Know allergies to medication used for analgesia

Locations (1)

Edificio 3 - Azienda Ospedaliero Universitaria Pisana Cisanello

Pisa, Tuscany, Italy

Outcomes

Primary Outcomes

NRS evaluation

Evaluate pain for every volume group in the first 24 hours post surgery using the Numeric Pain Scale (NRS) assigning a numeric value between zero (no pain) and ten (the worst pain ever felt). Absence of relevant pain is considered a NRS less than three. Success of the block was defined as NRS≤3.

Time frame: 24h post-op

Secondary Outcomes

NRS variation in time

consider variation of pain, assessed with numeric Pain scale, for each group, every six hours

Time frame: 24 h

Data from ClinicalTrials.gov

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