An observational study in Knee Replacement Surgery, sponsored by Hospital Universitari de Bellvitge. Completed at 1 site in Spain. Open to participants aged 50 Years to 90 Years. Per ClinicalTrials.gov, last updated 2011-07-25.
Sponsored by Hospital Universitari de Bellvitge · Observational
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.
Hospital Universitari de Bellvitge is the lead sponsor of 118 studies on the registry; 29 are open to participants now.
Counted across the registry records on this site, refreshed daily.
ASA physical status I-III patients scheduled for total knee arthoplasty
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.-
In one group (T1) with performance of femoral block before general anesthesia and administration of bolus of local anesthetic through stimulating catheter (combined anesthesia)
In second group (T2) with a administration of local anesthetic through stimulating femoral catheter until awareness of patient (balanced anesthesia).
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
Intraoperative and postoperative opiates requirements and relations with CVI
Time frame: Time surgery and 24,48 and 72 h postoperative
This study is completed, as verified in Feb 2011. You cannot join it, but the record below documents what was studied.
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Hospital Universitari de Bellvitge