Clinical trial NCT04286971: Preoperative Continuous Sciatic Perineural Analgesia in Patients Undergoing Lower Limb Revascularization
Official title: Preoperative Continuous Sciatic Perineural Analgesia, as a Bridge Therapy for Ischemic Pain, in Patients Undergoing Lower Limb Revascularization: a Retrospective Descriptive Study
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Ischemic Leg
Peripheral Vascular Disease
Keywords: continuous peripheral block
sciatic block
ischemic pain
Lead sponsor: Hospital Municipal Miguel Couto
Sponsor class: OTHER
First posted: 2020-02-27
Enrollment: 15
Sex: ALL
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: CASE_ONLY
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Patients with lower limb isquemic pain caused by peripheral arterial disease in the preoperative period.

Brief summary: This study evaluates the pain score numerical rating, after sciatic analgesic continuous block, in patients with ischemic pain before surgery of limb revascularization. All patients received those blocks to control ischemic severe pain.

Detailed description: Peripheral Obstructive Arterial Disease (PAD) is a disease with a prevalence of 10 to 25% in the population over 55 years, increasing with age, and may have disabling pain as a symptom, and sometimes the surgical approach is required. In the context of public hospital in Rio de Janeiro, where patients need to wait for surgery, the Anesthesiology and Acute Pain service routinely has sciatic nerve analgesic block in the popliteal region as a preoperative procedure.

The primary objective of the present study is to describe a series of cases where the technique was applied in order to relieve the pain of these patients, following the Pain Score Numerical rating as a reference. Secondary objectives will be to describe difficulties associated with the technique and possible associated adverse factors.

Eligibility criteria: Inclusion Criteria:

* preoperative continuous sciatic-popliteal nerve block
* lower limb angioplasty
* peripheral arterial disease;
* between 2017 and 2018 years;
* correct filling of numerical rating pain evaluation in the medical record

Exclusion Criteria:

* peripheral block to treat another pathology or condition in te same patient;
* peripheral block at another concomitant site (other than the popliteal);
* No adequate record of the care received in the medical record
* if medical record is not available during the data collection period

Primary outcomes:
measure: change in numerical pain scale
timeFrame: 24 hours after placement of sciatic catheter
Secondary outcomes:
measure: change in numerical pain scale
timeFrame: 72 hours after placement of sciatic catheter
measure: classification of technique difficulties
timeFrame: 72 hours after placement of sciatic catheter
measure: classifications of possible complications
timeFrame: 72 hours after placement of sciatic catheter
Other outcomes:
Locations:
city: Rio de Janeiro
country: Brazil
facility: Rafael M Linhares
Study officials:
References:
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citation: Kim NY, Lee KY, Bai SJ, Hong JH, Lee J, Park JM, Kim SH. Comparison of the effects of remifentanil-based general anesthesia and popliteal nerve block on postoperative pain and hemodynamic stability in diabetic patients undergoing distal foot amputation: A retrospective observational study. Medicine (Baltimore). 2016 Jul;95(29):e4302. doi: 10.1097/MD.0000000000004302.
citation: Dao T, Amaro-Driedger D, Mehta J. Successful treatment of Raynaud's syndrome in a lupus patient with continuous bilateral popliteal sciatic nerve blocks: a case report. Local Reg Anesth. 2016 Jun 15;9:35-7. doi: 10.2147/LRA.S97111. eCollection 2016.
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