Clinical Trials Logo

Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02893553
Other study ID # WEC-16-015
Secondary ID
Status Completed
Phase Phase 2
First received
Last updated
Start date December 2016
Est. completion date December 2021

Study information

Verified date June 2023
Source James J. Peters Veterans Affairs Medical Center
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Dysregulation of blood pressure (BP), secondary to decentralized autonomic nervous system (ANS) control of the cardiovascular system, often results in chronic hypotension and orthostatic hypotension (OH) in persons with spinal cord injury (SCI), particularly in those with high cord lesions (i.e., above T6). While most hypotensive individuals with chronic SCI remain asymptomatic and do not complain of symptoms associated with cerebral hypoperfusion, evidence of reduced resting cerebral blood flow (CBF) has been reported in association with low systemic BP in the SCI and non-SCI populations. Reduced CBF in hypotensive individuals may lead to cognitive dysfunction, and we reported significantly impaired memory and marginally impaired attention processing in hypotensive individuals with SCI compared to a normotensive SCI cohort. Furthermore, we found that CBF was not increased during cognitive testing in individuals with SCI, which may contribute to impaired cognitive function compared to non-SCI controls. Although asymptomatic hypotension may have an adverse impact on cognitive function and quality of quality of life (QOL) clinical management of this condition is extremely low. In fact, we reported that while nearly 40% of Veterans with SCI were hypotensive, less than 1% carried the diagnosis of hypotension or were prescribed an anti-hypotensive medication. The discrepancy between incidence and treatment of asymptomatic hypotension in the SCI population may relate to a paucity of treatment options which are supported by rigorous clinical trials documenting safe and effective use of anti-hypotensive therapy on BP, CBF and cognitive function. We hypothesize these study medications may increase systolic blood pressure to the normal range and improve cerebral blood flow velocity. Results and conclusions will not be removed from the record.


Description:

Study 1: Subjects will visit the laboratory between 3 and 9 times for 4 hours to determine the BP response to each dose of the 3 study medications (midodrine, pyridostigmine, and mirabegron). Upon arrival to the laboratory subjects will be randomized to receive midodrine, pyridostigmine, or mirabegron. Subjects will remain seated in their wheelchair for the duration of testing. Instrumentation will be applied by study personnel while subject is seated quietly, this can take up to 20 minutes. Instrumentation includes placement of 3 ECG electrodes for continuous HR monitoring and finger and brachial BP cuffs. BP, BR and HR will be recorded for 5-minutes before medication administration (baseline). After baseline, a small pill will be given with a glass of water. BP, BR and HR will be monitored for 5-minutes every 30 minutes for 4 hours after drug administration. Study 2: Twenty will visit the laboratory on 4 occasions to determine the effects of three anti-hypotensive agents, compared to placebo, on BP, CBFv, and cognitive performance on selected neuropsychological tests. Upon arrival to the laboratory for every visit subjects will be randomized to receive midodrine, pyridostigmine, mirabegron, or matching placebo. Neither the study subject nor the investigator will know which is being administered. Subjects will remain seated in their wheelchair throughout the duration of the study session and will be closely monitored by study personnel. Instrumentation will include placement of 3 ECG electrodes for continuous heart rate (HR) monitoring, finger and brachial BP cuffs, and a Doppler ultrasound probe positioned at the left MCA for continuous CBFv monitoring. Subjects will remain quietly seated in their wheelchair for 30-minutes after instrumentation for a 5-minute recording of continuous HR, BP, and CBFv (baseline). Prior to the baseline data collection period, the first battery of cognitive tests will be administered. The study medication will be administered to the subject along with a glass of water approximately 30-minutes after arrival to the laboratory. There will be a 2 hour break period until the second cognitive battery begins.


Recruitment information / eligibility

Status Completed
Enrollment 41
Est. completion date December 2021
Est. primary completion date December 2021
Accepts healthy volunteers No
Gender All
Age group 18 Years to 85 Years
Eligibility Inclusion Criteria: Spinal Cord Injured - Any level of injury - Any ASIA grade of SCI - Primarily wheelchair dependent for mobility - Duration of injury ? 1 year Exclusion Criteria: - Current illness or infection - History of severe autonomic dysreflexia (AD: condition where BP increases) - More than 3 symptomatic events per week; BP elevations above 140/90 mmHg; adverse symptoms reporting (e.g., light headedness, dizziness, goosebumps, chills, nausea, etc.) - Diagnosis of hypertension - History of Traumatic Brain Injury (TBI) - Documented history of traumatic brain injury (TBI) - Neurological condition other than SCI (Alzheimer's disease, dementia, stroke, multiple sclerosis, Parkinson's disease, etc) - History of epilepsy or other seizure disorder - Liver or kidney disease - Bladder problems including blockage of the urine and/or weak urine stream - Diagnosis of a psychiatric disorder such as schizophrenia or bipolar disorder - Diagnosis of artery disease, heart failure, irregular heartbeat, and AV block - Allergies to aspirin, a yellow dye, pyridostigmine bromide, midodrine hydrochloride, lyethylene oxide, polyethylene glycol, hydroxypropyl cellulose, butylated hydroxytoluene, magnesium stearate, hypromellose, yellow ferric oxide, and red ferric oxide - Had major surgery in the last 30 days - Illicit drug abuse within the last 6 months - Pregnant

Study Design


Intervention

Drug:
Midodrine Hydrochloride
study 1 will be single blind. study 2 will be blinded randomized-control trial.
Pyridostigmine Bromide
study 1 will be single blind. study 2 will be blinded randomized-control trial.
Mirabegron
study 1 will be single blind. study 2 will be blinded randomized-control trial.
Other:
Placebo
placebo will only be used for study arm 2, the randomized blinded phase.

Locations

Country Name City State
United States James J Peters VAMC Bronx New York
United States Kessler Foundation Research Center West Orange New Jersey

Sponsors (2)

Lead Sponsor Collaborator
James J. Peters Veterans Affairs Medical Center Kessler Foundation

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Systolic Blood Pressure Seated systolic blood pressure following intervention administration. Up to 5 years
Primary Cerebral Blood Flow Middle cerebral artery blood flow velocity following intervention administration compared to placebo. Up to 5 years
See also
  Status Clinical Trial Phase
Completed NCT03255187 - Effect of Dietary Supplemental Fish Oil in Alleviating Health Hazards Associated With Air Pollution N/A
Completed NCT05997303 - Continuous Norepinephrine Administration and Blood Pressure Stability During Anesthetic Induction N/A
Recruiting NCT04575194 - Study of the Cardiometabolic Effects of Obesity Pharmacotherapy Phase 4
Completed NCT03918486 - Caretaker vs. Routine Blood Pressure Sphygmomanometer
Completed NCT03410342 - The Effects of Types of Fruits and Vegetables on Vascular Function N/A
Active, not recruiting NCT05062161 - Sleep Duration and Blood Pressure During Sleep N/A
Not yet recruiting NCT04087070 - Blood Pressure Estimation Using Noninvasive Biosignals During Pediatric Anesthesia
Completed NCT03294928 - Arterial Waveform Analysis Applying Different Positive End-Expiratory Pressure (PEEP) Levels in Healthy Volunteers N/A
Completed NCT03859934 - Metabolic Effects of Melatonin Treatment Phase 1
Completed NCT03997461 - Comparison of Arterial Tonometry Sensor With Standard Oscillometric Blood Pressure Monitoring Device N/A
Completed NCT03290716 - Diet, ExerCIse and carDiovascular hEalth (DECIDE) - Salt Reduction Strategies for the Elderly in Nursing Homes in China N/A
Recruiting NCT06460233 - Blood Pressure Changes After Bariatric Surgery
Recruiting NCT05196048 - Blood Pressure Sensor of Watch-type Device With ECG Technology
Terminated NCT03325933 - Resistance Training and Cardiometabolic Health N/A
Not yet recruiting NCT06405880 - Pharmacist Case Finding and Intervention for Vascular Prevention Trial N/A
Completed NCT02924454 - Effects of Lipid Emulsion on the Pharmacokinetic and Pharmacodynamic Properties of Metoprolol. Phase 4
Completed NCT02451059 - Reducing Socioeconomic Disparities in Health at Pediatric Visits N/A
Active, not recruiting NCT02670967 - Effects of Soluble Fiber on Blood Pressure: A Meta-analysis of Randomly-controlled Trials N/A
Completed NCT02271633 - Nitrate Supplementation; Source Phase 4
Completed NCT02239744 - Intervention Study on the Health Impact of Air Filters in Chinese Adults N/A