Bilateral Bispectral Index (BIS)-Monitoring in Trauma Surgery

Hospital Universitari de Bellvitge85 enrolled

Overview

The principal objective is to notice the relevance of timing performance of femoral block for knee replacement surgery during general anesthesia and analyze the relationship with bilateral bispectral index (BIS) monitoring during induction and maintenance of anesthesia. Otherwise the investigators try to investigate if the timing of performance of this block influence in postoperative variables as pain or blood loss.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Knee Replacement Surgery

Eligibility

Sex: ALLMin age: 50 YearsMax age: 90 Years

Medical Language ↔ Plain English

Inclusion Criteria: \- Exclusion Criteria: ASA IV, patients with difficult airway management, patients with antecedent of cerebral ischemia, presence of atrioventricular fistula, patients with absent distal pulses or history of vascular surgery in the involved limbs, patients with high risk of deep vein thrombosis.-

Locations (1)

Antoni Sabate Pes

L'Hospitalet de Llobregat, Barcelona, Spain

Outcomes

Primary Outcomes

Sevoflurane requirements

Combined ( femoral block and general anesthesia) or balanced anesthesia ( intravenous analgesics and general anesthesia) is evaluated on the requirements of inhalational hypnotics during surgery. Schedule time when BIS has to be in proper range (40-60): T1 T2 T3 T4 T5 T6 T1 Induction T2 Inflated cuff ischemia T3 Incision T4 Unlocking cuff ischemia T5 End surgery T6 Time to wake the patient from the close of the sevoflurane vaporizer Each time include a period of adjustment in 5 minutes

Time frame: 6 months

Secondary Outcomes

Intraoperative and postoperative opiates requirements and relations with CVI

Time frame: Time surgery and 24,48 and 72 h postoperative

Data from ClinicalTrials.gov

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