Improving Pain Management Via Spinal Cord Stimulation and Blood Pressure Reduction

NCT ID: NCT04676399

Last Updated: 2025-09-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

EARLY_PHASE1

Total Enrollment

36 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-02-08

Study Completion Date

2027-12-31

Brief Summary

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The purpose of this study (PASSION study) is to monitor symptoms of chronic pain before and after 2 weeks of a standard drug commonly used to treat elevated blood pressure compared with 2 weeks of placebo (crossover design) so that we may better understand how blood pressure affects your level of pain. This study is not testing an experimental drug.

Detailed Description

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The goal of the PASSION study is to determine the extent to which reductions in blood pressure improve pain management via SCS

1. Examine the extent to which reductions in blood pressure (2 weeks of diuretic and 2 weeks of placebo) improve pain management among patients with chronic pain and hypertension compared.
2. Examine the extent to which arterial baroreflex function, which is critical to blood pressure regulation, is impaired in patients with chronic pain and hypertension and is correlated with chronic pain symptoms.

Conditions

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Chronic Pain Hypertension Diuretics Drug Reactions SCS

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Mixed Model 2-way analysis of variance to asses pain and BP responses to the diuretic vs. placebo.
Primary Study Purpose

OTHER

Blinding Strategy

TRIPLE

Participants Caregivers Investigators
Randomization to either hydrochlorothiazide or placebo using a crossover study design will occur via a 1:1 ratio determined by computer generated randomization

Study Groups

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Hydrochlorothiazide Pill (12.5 mg twice a day)

Planned use in this study

1. Condition/disease indication(s): Hypertension
2. Subject population: Chronic pain
3. Dose(s): 12.5 mg twice per day for 14 days.
4. Administration: Oral
5. Dosing regimen: 12.5 mg twice per day

Group Type EXPERIMENTAL

Hydrochlorothiazide 12.5mg

Intervention Type DRUG

2 pills/day (1 pill every morning and 1 pill every evening) for 14 days.

Placebo

Has no active ingredients but is made to look like the study drug.

2 pills/day for 14 days.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

2 pills/day (1 pill every morning and 1 pill every evening) for 14 days

Interventions

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Hydrochlorothiazide 12.5mg

2 pills/day (1 pill every morning and 1 pill every evening) for 14 days.

Intervention Type DRUG

Placebo

2 pills/day (1 pill every morning and 1 pill every evening) for 14 days

Intervention Type DRUG

Other Intervention Names

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HCTZ

Eligibility Criteria

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Inclusion Criteria

1. Male or Female, age 40-79
2. Chronic low back pain
3. Permanent spinal cord stimulator implant for chronic pain
4. Stage 1 hypertension (BP 130-139/80-89 mmHg) with ASCVD risk ≥10%
5. Stage 2 hypertension (BP ≥ 140/90 mmHg)
6. Willing to visit research lab (Fairway CTSU)
7. Willing to undergo a blood draw
8. Able to provide written informed consent

Exclusion Criteria

1. Any history of abnormal responses (allergy) to thiazide-type drugs
2. Currently taking any antihypertensive medication
3. Stage 1 hypertension (BP 130-139/80-89 mmHg) with ASCVD risk \<10%
4. BP ≥160/100 (these patients should be promptly treated with 2 medications)
5. Secondary hypertension (e.g., aldosteronism, renal artery stenosis)
6. Symptomatic hypotension (weakness or syncope upon standing)
7. Renal failure
8. Diabetes requiring insulin or glucose-lowering drugs
9. History of neurological disease (e.g., dementias, Parkinson's)
10. History of stroke
11. Current diagnosis of cancer
12. Women who are pregnant or planning to become pregnant
13. Any active infection
14. Subject is unwilling or unable to comply with the protocol
15. If currently taking a NSAID, willing to stop for at least 3 days prior to beginning study and throughout study
Minimum Eligible Age

40 Years

Maximum Eligible Age

79 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Kansas Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Seth W Holwerda, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Kansas Medical Center

Locations

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The Marc A. Asher Comprehensive Spine Center at the Kansas University Medical Center

Kansas City, Kansas, United States

Site Status

Countries

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United States

Other Identifiers

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00146604

Identifier Type: -

Identifier Source: org_study_id

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