The Effects of Scalp Block on Haemodynamic Response and Postoperative Pain in Posterior Fossa Surgery

August 18, 2017 updated by: Eren Fatma Akcil, Istanbul University

The Effects of Scalp Block on Haemodynamic Response and Postoperative Pain in

This study evaluate the effects of scalp block versus local infiltration on haemodynamic response to head pin replacement and skin incision and postoperative analgesia in posterior fossa surgery

Study Overview

Detailed Description

In this study 15 patients will receive scalp block with bupivacaine, 15 patients will receive local infiltration with bupivacaine and 15 patients will receive placebo before surgery. The haemodynamic response to head pin replacement and skin incision will be recorded. Postoperatively all patients will have a patient controlled analgesia (PCA) device containing morphine (1 mg/ml) for analgesia. Visual analogue scale (VAS) for pain evaluation, sedation scores, and also postoperative morphine consumption will be evaluated and recorded.

Study Type

Interventional

Enrollment (Actual)

45

Phase

  • Phase 2

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

16 years to 70 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Posterior fossa surgery
  • Preoperative GlasGow Coma Score: 15/15

Exclusion Criteria:

  • Allergy to bupivacaine
  • Uncontrolled hypertension
  • Coagulopathy
  • Cerebrovascular disease
  • Earlier craniotomy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: scalp block
In this arm, after general anesthesia, before surgery and head pin placement, scalp block will be applied. Scalp block will be performed with bupivacaine (Marcaine 5 mg/mL, 0,5% bupivacaine); nervus supraorbitalis, nervus supratrochlearis, n. auriculotemporalis, nervus zygomaticotemporalis, nervus occipitalis majoris and minoris will be bilaterally blocked with 2-3 ml bupivacaine.
In the scalp block and local infiltration arms; bupivacaine %0,5 will be used.
Other Names:
  • Marcaine
End of the surgery all of the patients in 3 groups will receive morphine patient controlled analgesia (PCA) including 1mg/ml morphine. The PCA was set to administer a bolus dose of 1 mg on demand with a lockout period of 10 minutes and maximum 25 mg for 4 hours.
Other Names:
  • MORPHİNE PCA
Active Comparator: local infiltration
In this arm, after general anesthesia, before surgery, 20 ml 0,5% bupivacaine (Marcaine 5 mg/ml, 0,5% bupivacaine) will be infiltrated to head pin points and skin incision area.
In the scalp block and local infiltration arms; bupivacaine %0,5 will be used.
Other Names:
  • Marcaine
End of the surgery all of the patients in 3 groups will receive morphine patient controlled analgesia (PCA) including 1mg/ml morphine. The PCA was set to administer a bolus dose of 1 mg on demand with a lockout period of 10 minutes and maximum 25 mg for 4 hours.
Other Names:
  • MORPHİNE PCA
Placebo Comparator: control
In this arm, neither scalp block, nor local infiltration will be performed.
End of the surgery all of the patients in 3 groups will receive morphine patient controlled analgesia (PCA) including 1mg/ml morphine. The PCA was set to administer a bolus dose of 1 mg on demand with a lockout period of 10 minutes and maximum 25 mg for 4 hours.
Other Names:
  • MORPHİNE PCA

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Heart rate response to head pin replacement and skin incision
Time Frame: Intraoperative
heart rates (beats per minute) will be recorded before induction, before block, before head pinning, head pinning, head pin 5. and 10. minutes, skin incision
Intraoperative
Systolic arterial pressure response to head pin replacement and skin incision
Time Frame: Intraoperative
Systolic arterial pressures (mmHg) will be recorded in before induction, before block, before head pinning, head pinning, head pin 5. and 10. minutes, skin incision
Intraoperative
Diastolic arterial pressure response to head pin replacement and skin incision
Time Frame: Intraoperative
Diastolic arterial pressures (mmHg) will be recorded before induction, before block, before head pinning, head pinning, head pin 5. and 10. minutes, skin incision
Intraoperative
mean arterial pressure response to head pin replacement and skin incision
Time Frame: Intraoperative
Mean arterial pressures (mmHg) will be recorded in will be recorded before induction, before block, before head pinning, head pinning, head pin 5. and 10. minutes, skin incision
Intraoperative

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
postoperative pain
Time Frame: 30. minute, 1.,2.,6.,12.,24. hours pain scores (visual analogue score=VAS)
pain scores (visual analogue score=VAS) will be evaluated.
30. minute, 1.,2.,6.,12.,24. hours pain scores (visual analogue score=VAS)
morphine consumption
Time Frame: 30. minute, 1.,2.,6.,12.,24. hours
morphine dosage used (mg) will be recorded in this time periods
30. minute, 1.,2.,6.,12.,24. hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Director: Yusuf Tunali, Professor, Istanbul University Cerrahpasa Medical Faculty Department Anesthesiology and Reanimation

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2014

Primary Completion (Actual)

December 1, 2016

Study Completion (Actual)

December 1, 2016

Study Registration Dates

First Submitted

July 26, 2016

First Submitted That Met QC Criteria

August 1, 2016

First Posted (Estimate)

August 2, 2016

Study Record Updates

Last Update Posted (Actual)

August 22, 2017

Last Update Submitted That Met QC Criteria

August 18, 2017

Last Verified

August 1, 2017

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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