Viewing Study NCT01404975



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Study NCT ID: NCT01404975
Status: COMPLETED
Last Update Posted: 2018-04-17
First Post: 2011-06-21

Brief Title: TAVI Protocol - Paravertebral Block Study
Sponsor: University Health Network Toronto
Organization: University Health Network Toronto

Study Overview

Official Title: Reducing Delirium After Trans-Apical Aortic Valve Replacement TAVI A Multifaceted Approach of Perioperative Care
Status: COMPLETED
Status Verified Date: 2018-01
Last Known Status: None
Delayed Posting: No
If Stopped, Why?: Not Stopped
Has Expanded Access: False
If Expanded Access, NCT#: N/A
Has Expanded Access, NCT# Status: N/A
Acronym: TAVI PVB
Brief Summary: Trans-apical aortic valve replacement is a new treatment for severe aortic stenosis It is offered to elderly patients with medical problems that would markedly increase the risk of conventional cardiac surgery The rate of delirium acute confusional state after surgery in these patients may exceed 50 Estimated hospital costs associated with delirium at Toronto General Hospital last year exceeded 1-million CAD Pain after surgery and the use of opioids morphine type of pain-relief drugs are known to increase the risk of delirium The investigators plan to minimize the use of opioids and improve pain management by replacing the standard intravenous opioid-based pain management with the paravertebral nerve block using only the local anesthetic These two management strategies will be compared with respect to the rate of delirium duration of hospital stay and the overall costs

Hypothesis Paravertebral analgesia with LA decreases the incidence of delirium after trans-apical AVR when compared to standard systemic opioid-based analgesia
Detailed Description: A prospective randomized controlled multicentre study Toronto General Hospital and Sunnybrook Health Science Centre Toronto Canada The investigators are planning to replace the standard intravenous opioid analgesia with a continuous paravertebral block using local anesthetic after trans-apical aortic valve replacement

Anesthesia management will be standardized to minimize any impact that anesthetic type may have on neurological outcomes

Metrics to evaluate outcomes Assessment of delirium will be performed utilizing the CAM-ICU preoperatively baseline and postoperatively every 12 hours or as needed according to the patients condition during the first 7 postoperative days or until discharge

The CAM recognizes both hyperactive and hypoactive forms of delirium It includes four-step algorithm and assesses 1 an acute onset of changes or fluctuations in the course of mental status 2 inattention 3 disorganized thinking and 4 an altered level of consciousness The patient is determined to be delirious CAM positive if heshe manifests both features 1 and 2 plus either feature 3 or 4

Primary screening for delirium will be performed by the nursing staff Diagnose of delirium will be confirmed by the psychiatry consult Assessment of Sedation and Pain Standardized according to institutional guidelines

Cost Calculations The total cost summation of direct-variable direct-fixed and overhead costs for each patient will be determined for both study groups

Study Oversight

Has Oversight DMC: None
Is a FDA Regulated Drug?: None
Is a FDA Regulated Device?: None
Is an Unapproved Device?: None
Is a PPSD?: None
Is a US Export?: None
Is an FDA AA801 Violation?: None