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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03243279
Other study ID # Pro00083136
Secondary ID
Status Completed
Phase
First received
Last updated
Start date September 15, 2017
Est. completion date May 31, 2022

Study information

Verified date February 2022
Source Duke University
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The purpose of this study is to determine whether baroreceptor sensitivity (the ability of your body to change your heart rate and/or blood pressure in response to a situation) has any effect on how likely you are to suffer certain events after heart or lung surgery. The postoperative events that the investigators will be studying are pain after surgery, atrial fibrillation (an irregular heart rhythm), and cognitive dysfunction (a decline in mental abilities).


Description:

The purpose of this study is to determine if preoperative baroreceptor sensitivity (BRS) correlates with major outcomes after cardiac and thoracic surgery, including acute and chronic pain, atrial arrhythmias, and cognitive function. To test this hypothesis, approximately 95 patients will be enrolled, and spontaneous baroreceptor sensitivity will be measured prior to surgery as well as immediately postoperatively. Outcomes will include acute pain using the numeric rating scale, Brief Pain Inventory, and Gracely Box Scale administered preoperatively, on postoperative days 1 and 2 and by phone at 6-weeks postoperatively. Chronic pain will be assessed at 6-month follow-up visit via hyperalgesia testing using Von Frey filaments. Postoperative atrial arrhythmias will be assessed by review of postoperative telemetry, the electronic medical record, and ECG performed prior to discharge. Finally, cognitive function will be assess via Mini-Mental State examination administered preoperative and at the 6-month follow-up visit. Association between BRS and the outcomes of interest will be tested with regression models adjusted for appropriate covariates. Significance threshold alpha will be adjusted for the number of statistical tests using the Bonferroni correction. Our hypothesis is that patients with impaired preoperative BRS will have an increased incidence of acute and chronic postoperative pain, atrial fibrillation, and cognitive decline after surgery.


Recruitment information / eligibility

Status Completed
Enrollment 72
Est. completion date May 31, 2022
Est. primary completion date December 15, 2021
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - >= 18 years of age - Undergoing cardiac (coronary artery bypass grafting [CABG], CABG + valve, or valve only) or thoracic (video-assisted thoracoscopic [VATS] approach to lobectomy) surgery Exclusion Criteria: - Any preexisting pain condition (defined as pain of >=3 months duration prior to enrollment) - Pain at the time of enrollment interview - Need for preoperative analgesics - Preexisting chronic or paroxysmal atrial fibrillation - Preexisting atrial or ventricular arrhythmia - Need for preoperative anti-arrhythmic medication - History of symptomatic cerebrovascular disease (e.g., prior stroke) with residual deficits - Alcoholism (>2 drinks/day) - Psychiatric illness (any clinical diagnosis requiring therapy) - Drug abuse (any illicit drug use in the preceding 3 months before surgery) - Hepatic insufficiency (liver function tests > 1.5 times the upper limit of normal) - Severe pulmonary insufficiency (home oxygen) - Renal failure (serum creatinine >2.0 mg/dL) - Non-English speaking - Unable to read - Participants who score <24 on baseline Mini Mental State examination

Study Design


Locations

Country Name City State
United States Duke University Medical Center Durham North Carolina

Sponsors (1)

Lead Sponsor Collaborator
Duke University

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Baseline baroreflex sensitivity Non-invasive BRS testing with BIOPAC MP160 30 min
Secondary Postoperative day (POD) 1 baroreflex sensitivity Non-invasive BRS testing with BIOPAC MP160 30 min
Secondary POD 2 baroreflex sensitivity Non-invasive BRS testing with BIOPAC MP160 30 min
Secondary 6 month baroreflex sensitivity Non-invasive BRS testing with BIOPAC MP160 6 months
Secondary Acute postoperative pain as assessed by the numeric rating scale (NRS) - 24h Median NRS pain score in the first 24h after surgery 24 hours
Secondary Acute postoperative pain as assessed by the numeric rating scale (NRS) - 48h Median NRS pain score in the second 24h after surgery 48 hours
Secondary Acute postoperative pain as assessed by the Gracely Box Scale (GBS) - POD1 GBS survey on POD 1 15 min
Secondary Acute postoperative pain as assessed by the Gracely Box Scale (GBS) - POD2 GBS survey on POD 2 15 min
Secondary Acute postoperative pain as assessed by the Gracely Box Scale (GBS) - 6 mo GBS survey at 6 month follow-up visit 6 months
Secondary Chronic pain as assessed by the change in Brief Pain Inventory score Change from baseline to 6 months postoperatively Baseline, 6 months
Secondary Hyperalgesia Nociceptive threshold as assessed by Von Frey filament testing at 6 month follow-up 6 months
Secondary Area of hyperalgesia or allodynia Area surrounding operative incision as assessed by Von Frey filament testing at 6 month follow-up 6 months
Secondary Postoperative atrial fibrillation Chart review assessment of the occurrence of postoperative atrial fibrillation during hospitalization and up to 6 weeks postoperatively 6 weeks
Secondary Postoperative cognitive change Change from baseline to 6 months in the Mini Mental Status Exam score Baseline, 6 months
Secondary Baseline psychological distress As assessed by the Brief Symptom Inventory-18 15 min
Secondary 6 month psychological distress As assessed by the Brief Symptom Inventory-18 6 months
Secondary Baseline frailty As assessed by the Modified Frailty Index 10 min
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