This study aims to prospectively compare surgical field quality and intraoperative blood loss between general inhalational anesthesia to total intravenous anesthesia (TIVA) alone in subjects undergoing endoscopic ear surgery. A secondary objective is to compare rates of emergence delirium and total recovery time between the two groups.
In sinus surgery, TIVA has been described as a possible advantage in the use of endoscopic ear surgery. However, to date, there are no studies that examine blood loss, surgical field quality, and recovery in TIVA compared to inhalational anesthesia in the setting of endoscopic ear surgery. The hypothesis is that in patients who undergo endoscopic tympanoplasty, those who receive TIVA will have reduced intraoperative blood loss, improved surgical field quality, and reduced emergence agitation than those who receive inhalational anesthesia. This study will be a prospective double-blinded randomized control trial consisting of subjects undergoing endoscopic tympanoplasty surgery to assess intraoperative blood loss, surgical field quality, rates of emergence delirium, and recovery time.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
100
1.5-2%
1-2% adults 0.6-1.5% Children
1mg/kg-mcg/kg/min adults 100-200mcg/kg/min children
Our Lady of the Lake Hospital
Baton Rouge, Louisiana, United States
RECRUITINGSurgical Field Quality
Neurotologists will evaluate endoscopic video clips from each surgery to assess clarity of field at different points in the surgery using the Boezaart scale grading system. It is a scale from 0-5, with 0 being the most favorable outcome and 5 being the least favorable outcome.
Time frame: Post-Operative evaluation (within 2 weeks)
Intra-operative blood loss
Intraoperative blood loss will be determined by measuring the total number of pledgets needed to attain hemostatsis. This will be a general observation with the more pledgets needed to stop bleeding in the surgical area indicates more possible blood loss than the procedures with that require less pledgets.
Time frame: 1-2 hours during surgery
Emergent Delirium and Recovery Time-Riker Scale
Sedation and agitation will be assessed immediately after extubation using the Riker Sedation-Agitation Scale (SAS) which is on scale of 1-7 with 1 being the most favorable (easier to rouse/calm but responsive) and 7 being the least favorable (deeply sedated/higher agitation).
Time frame: Immediately After extubation
Emergent Delirium and Recovery Time-Richmond Scale
Sedation and agitation will be assessed immediately after extubation using a second scale known as the Richmond Agitation-Sedation Scale (RASS). The RASS is on a scale of -5 to +4, with higher/more positive scores indicating worse outcomes (aka more aggressive behavior) and lower scores indicating better outcomes (less responsiveness). A score of 0(Zero) indicates a calm but alert patient.
Time frame: Immediately After extubation
Post-operative pain or complications
Patients will recover for 1 hour in the post-anesthesia care unit, and a well-trained nurse blinded to the randomized study group will evaluate pain intensity by using the numeric rating scale (0-10 range, with higher scores indicating worse pain) at three intervals: immediately after arrival, 30 minutes after arrival, and 60 minutes after arrival. Any rescue analgesics that are administered will be documented. Patients will be observed postoperatively for any adverse events, as is standard procedure. Any other adverse features such as nausea, vomiting, or changes in vision or color will be followed for 30 days post procedure.
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0.05-2ug/kg/min adults and children
Time frame: 0-1 hour post-operative