In this study, post-operative delirium will be measured in patients undergoing surgery for bladder resection, and associated microRNA biomarkers will be evaluated in patients considered delirious and non-delirious after surgery.
With voluntary participation, this study requires participants to complete a self-administered cognitive evaluation (SAGE) before surgery to assess baseline cognitive impairment and early dementia; vital signs will be documented prior to surgery. During surgery, participants will receive a standardized general anesthesia regimen as described in the protocol. Several parameters will be measured during surgery, including bispectral monitoring to measure processed EEG. After surgery, fitness for cognitive evaluation will be determined by the Richmond Agitation-Sedation Scale (RASS) scale, and then emergence delirium will be assessed using the CAM-ICU scale. Fitness for discharge from PACU will be determined by an Aldrete score of 9 or more. Postoperative pain will be assessed using the 11-point Numeric Rating Scale (NRS-11). Postoperative nausea and vomiting (PONV) level will also be documented. Postoperative Delirium (POD) assessment will be achieved by administering the memorial delirium assessment scale (MDAS) twice a day starting on day 1 through day 3 postoperatively. Pain NRS-11 score and PONV levels will also be documented at each visit. For microRNA testing, blood probes will be collected in 5mL purple top tube at surgical preadmission and post-surgery days one, two and three. Risks associated with participating in this study include normal risk associated with having surgery and general anesthesia; no greater than minimal risk is associated with blood collection. For the participant, there are no immediate anticipated benefits for participating in this study. The importance of the knowledge that is expected to result includes lower post-operative complications as a result of post-operative delirium, faster recovery, and shorter hospital stay.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
50
These cognitive assessments will be utilized during the study to evaluate cognitive levels comparing prior to surgery and post-operatively in order to determine if the subject is delirious. BIS monitoring will be utilized for all subjects.
Subjects will have blood draws at surgical preadmission visit, Day 1, Day 2, and Day 3 post surgery only; one tube containing approximately one teaspoon (5 mL) of blood will be drawn at each visit.
Standardized anesthetic care will be provided as described by the protocol for each subject consented for this trial.
The Ohio State University Wexner Medical Center
Columbus, Ohio, United States
Post-operative delirium
Evaluate the incidence of and risk factors for POD in patients undergoing radical cystectomy utilizing the Memorial Delirium Assessment Scale.
Time frame: up to 3 days post-operatively
microRNA expression
A secondary aim of the study is to obtain estimates and variances of the difference in microRNA expression between 2 groups: delirious patients and non-delirious patients.
Time frame: up to 3 days post-operatively
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