Heart Failure With Reduced Ejection FractionPhase 2/3MIDOH-HF-PNCT06405555
Midodrine in Heart Failure With Reduced Ejection Fraction With Hypotension
A Phase 2/3 study testing Midodrine Oral Tablet in people with Heart Failure With Reduced Ejection Fraction and Hypotension, run by Ottawa Heart Institute Research Corporation at 1 site in Canada.
Trial summary
The evidence-based pharmacologic treatments available for patients with heart failure with reduced ejection fraction (HFrEF) has been established over the last few decades of cardiovascular research. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Heart Failure With Reduced Ejection Fraction, Hypotension, LV Dysfunction
- What is being tested?
- Midodrine Oral Tablet
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 56 participants
- Where
- 1 siteCanada
- Study dates
- 7 Aug 2026to 1 Jun 2028
- Phase
- Phase 2/3
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adults >= 18 years of age.
- LVEF <= 40 % within the last 3 months as determined by any one of: Transthoracic echocardiogram, transesophageal echocardiogram, cardiac magnetic resonance imaging, MUGA scan, angiogram with left ventriculogram.
- AHA/ACC Stage B or C Heart Failure
- Hospitalized patients in the ward setting OR in the cardiac intensive care unit (who are >= 48 hours after their last dose of vasopressor or inotrope).
- Seated upright or supine SBP <= 100 mmHg on two or more consecutive BP measurements separated by at least 8 hours
Who cannot join
- Patient OR substitute decision-maker (SDM) unwilling or unable to provide informed consent
- Documented allergy or intolerance to midodrine
- Treatment for active infection (either documented infection or empiric treatment) with antimicrobials at the time of recruitment.
- Current use OR any use within the last 48 hours of an intravenous inotrope or vasopressor medication OR the need for IV inotrope or vasoproessor use to treat hypotension
- Patient within 72 hours of an acute coronary syndrome.
- Heart transplant recipient.
Show all 20Show fewer
- Presence of temporary or durable mechanical circulatory support device.
- Severe valvular disease expected to be intervened upon during the incident hospitalization.
- Hyperkalemia >= 5.5 mmol/L.
- Baseline eGFR (as calculated by the CKD-EPI method) <= 20 mL/min/1.73 m2 as measured within the last 3 months.
- A treatable cause for hypotension, including but not limited to: hypovolemia (eg. Bleeding, overdiuresis, poor oral intake), obstructive shock, sepsis, adrenal insufficiency.
- Clinical diagnosis of ongoing cardiogenic shock, or diagnosed as defined in SHOCK trial: sBP <= 90 mmHg with evidence of end-organ hypoperfusion (cool extremities, urine output < 30 mL/hr, HR > 60 bpm, or elevated lactate >=3.5 mmol/L), invasive hemodynamic measurements (if available) of CI <= 2.2 L/min/m2 and a pulmonary capillary wedge pressure (PCWP) of >=15 mmHg.
- Pregnant patient.
- Anticipated patient discharge in less than two days from enrolment (ie. less than 6 anticipated doses of midodrine, if randomized to treatment/intervention arm).
- Acute brain pathology (including, but not limited to intracranial hemorrhage or hematoma) in which most-responsible clinician deems it unsafe to augment blood pressure.
- Untreated thyrotoxicosis
- Acute or acute on chronic liver failure
- Patient unable to take oral medications
- Bradycardia with resting heart rate less than 50 beats per minute.
- Patients on an equivalent dose of Lasix >= 80 mg IV BID
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Shihab Sarwar, MD contact
Canada1 site, 1 recruiting
- Recruiting
University of Ottawa Heart Institute
Ottawa, Ontario, K1Y 4W7
Poppy MacPhee, RN, 613-696-7000, pmacphee@ottawaheart.ca
Ian Paterson, MD
About this study
Official title: Midodrine in Heart Failure With Reduced Ejection Fraction With Hypotension: A Pilot, Open-label, Randomized Controlled Trial
The evidence-based pharmacologic treatments available for patients with heart failure with reduced ejection fraction (HFrEF) has been established over the last few decades of cardiovascular research. These treatments, termed Foundational Guideline-Directed-Medical Therapies (GDMT), prolong patient life, improve patient-reported symptoms, and reduce hospitalizations for heart failure. A direct effect of most medication classes encompassed within GDMT is the reduction in blood pressure due to their mechanisms of action. In addition, as patients with HFrEF become more advanced in their disease, a significant proportion develop hypotension related to pump failure and autonomic dysfunction, amongst other possible mechanisms. As a result, a significant proportion of HFrEF patients are not optimized on GDMT with hypotension as their limiting barrier that would otherwise have served to improve their heart function, heart failure symptoms, and mortality. Currently, there does not exist any evidence-based strategies to address the problem of hypotension in HFrEF patients who are not optimized on GDMT.
Midodrine is an alpha-adrenergic agonist (α1-AR) that exerts its effects on peripheral venous and arteriolar vasculature to increase blood pressure. This medication has been used off-label by some clinicians in the hypotensive HFrEF population to increase blood pressure and has been reported to have beneficial effects in improving GDMT utilization as well as increasing left ventricular ejection fraction (LVEF) in published case reports/case series. There does not exist any randomized prospective data on the use of midodrine in the hypotensive HFrEF population. The investigators' objective is to complete the first open-label, randomized control trial of midodrine in the hypotensive HFrEF population to demonstrate feasibility in performing a trial in this patient population and to show efficacy in increasing blood pressure without associated harm. The results of this trial will be used as the foundation and rationale for future studies assessing the impact of midodrine use on GDMT utilization as well as hard cardiovascular outcomes in the hypotensive HFrEF population, including hospitalizations for heart failure and mortality.
Read the detailed description
This will be a pilot, open-label, randomized controlled trial with the intervention/treatment being midodrine in hospitalized patients with HFrEF. The comparator/control arm will be patients following standard of care, which is to undergo no further pharmacologic intervention directed at hypotension unless clinically indicated. Patients who meet inclusion criteria will be randomized (1:1) to either midodrine group or control group, which will occur at the time of recruitment. In the treatment group, patients will receive midodrine for a total planned duration of up to 5 days, or until hospital discharge, whichever comes first. The midodrine will initially be started at 2.5 mg po TID for 1 day, followed by 5.0 mg po TID x 1 day, 7.5 mg po TID x 1 day, and 10 mg po TID x 2 days. Side effects reported by patients and any adverse drug events will be documented. At the end of the inpatient study period, continuation of midodrine off-label will be at the treating clinician's discretion in the treatment arm.
For patients discharged home less than 1 week from the exposure period, patients will be followed for 2 weeks with the Telehome monitoring program (THM), which is a virtual outpatient service intended to closely follow heart failure patients, to monitor blood pressure, heart rate, weight and adverse events or side effects. For patients discharged home between 1 to 2 weeks from the exposure period, they will be followed for 1 week with THM. For patients discharged after 2 or more weeks from the exposure period, no THM follow-up will occur. Frequency of THM follow-up, as well as inpatient monitoring parameters is as outlined in the "Data Capture" section.
Key clinical measurements will be obtained in both treatment and control arms including blood pressure measurements (every 6 hours while awake, with each measurement in the treatment arm consisting of BP measured 1 hour after the administration of midodrine dose and in the supine position. For patients in the control arm, a similar frequency of blood pressures will be obtained at pre-specified times), NT-proBNP at the time of recruitment (Day 0, prior to administration of midodrine in treatment arm) and after 5 days (ie. Sample obtained at time of last dose at Day 4 or at Day 5) or hospital discharge (whichever comes first). Safety outcomes will be monitored for and assessed. The study will be open-label and neither the patient nor the treating physicians will be blinded in this study.
- Being tested
- Midodrine Oral Tablet
- Keywords
- Heart Failure, GDMT, Midodrine
- Medical subject headings
- Hypotension, Ventricular Dysfunction, Left, Heart Failure
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Midodrine Oral TabletDrug
Also called Midodrine hydrochloride
Exposure to up to 5 days of midodrine (or until hospital discharge) in hospital at escalating doses with the following protocol: 2.5 mg po TID x 1 day, 5.0 mg po TID x 1 day, 7.5 mg po TID x 1 day, 10 mg po TID x 2 days.
| Study group | Role | What they receive |
|---|---|---|
| Midodrine treatment | Experimental | Patients randomized to receive midodrine for up to 5 days in hospital at escalating doses starting at 2.5 mg po TID x 1 day, 5.0 mg po TID x 1 day, 7.5 mg po TID x 1 day, 10 mg po TID x 2 days. Patients may be discharged from hospital prior to completion of the full 5 day protocol. All patients in the midodrine treatment arm will receive otherwise usual standard of care treatments. Receives: Drug: Midodrine Oral Tablet |
| Control | No intervention | Patients randomized to the control arm will receive usual standard of care treatments without addition of midodrine. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Enrollment rate
Number of participants enrolled per week
Measured: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Percent enrollment
Number of participants enrolled divided by number screened eligible
Measured: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Randomization proportion
Number of participants randomized divided by number of participants enrolled
Measured: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Percentage of protocol completion
Number of participants completing the study protocol divided by the number of participants randomized.
Measured: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Percentage lost to follow-up
Number of participants lost to follow-up divided by number of participants randomized.
Measured: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Secondary outcomes (23)
SBP at baseline compared to Day 4 or hospital discharge if earlier
Measurement of systolic blood pressure averaged over at least two measurements per day at study enrolment compared to average systolic blood pressure averaged over at least three measures on Day 4, or hospital discharge if earlier. The measurement is numerical difference in systolic blood pressure averages (mmHg). Blood pressure measurements are both supine lying measurements.
Measured: Measures from time of enrolment (Day -1 or 0) and Day 4, or hospital discharge if earlier
Proportion of patients achieving sBP > 105 mmHg on Day 4 or hospital discharge if earlier
Measurement of systolic blood pressure averaged over at least three measures on Day 4, or hospital discharge if earlier. The measurement is numerical percentage. Blood pressure measurements are both supine lying measurements.
Measured: Measurement from Day 4 of study protocol, or hospital discharge if earlier
DBP at baseline compared to Day 4 or hospital discharge if earlier
Measurement of diastolic blood pressure averaged over at least two measurements per day at study enrolment compared to average diastolic blood pressure averaged over at least three measures on Day 4, or hospital discharge if earlier. The measurement is numerical difference in diastolic blood pressure averages (mmHg). Blood pressure measurements are both supine lying measurements.
Measured: Measures from time of enrolment (Day -1 or 0) and Day 4, or hospital discharge if earlier
NT-proBNP at baseline compared to Day 4 or hospital discharge if earlier.
Measurement of NT-proBNP blood test at baseline at time of study enrolment minus the measurement of NT-proBNP at Day 4 of the study protocol, or hospital discharge if earlier.
Measured: Measures from time of enrolment (Day -1, or earlier if available) and Day 4, or hospital discharge if earlier
Time from randomization to hospital discharge (days).
Date of hospital discharge subtracted by date of study randomization, expressed in days.
Measured: From the date of participant randomization to the date of discharge from hospital (to home, rehabilitation or transitional institution, long-term care/nursing home), up to 4 weeks.
Hypotension events with SBP<80 mmHg within 48 hours of discontinuation of midodrine not attributable to other reversible causes
Blood pressure event is recorded with systolic blood pressure < 80 mmHg during the study protocol in patients on midodrine where the team involved within the participants clinical circle of care do not have other attributable reversible causes.
Measured: From time of study Day 4 (or last day of midodrine exposure) up to 48 hours after last exposure.
Number of GDMT drugs at any dosage
Average number of Guideline Directed Medical Therapy medications for HFrEF (of the following medication classes: (1) ACEi/ARB/ARNI, (2)Beta-blocker, (3) Mineralocorticoid Receptor Antagonist, (4) SGLT2i) in the midodrine group and control groups.
Measured: Days 0, 4 (or hospital discharge if earlier), and at up to 4 weeks (Day 27) at the end of the protocol..
Number of GDMT drugs at >= 50% of goal trial dosages as outlined in clinical practice guidelines
Average number of Guideline Directed Medical Therapy medications for HFrEF (of the following medication classes: (1) ACEi/ARB/ARNI, (2)Beta-blocker, (3) Mineralocorticoid Receptor Antagonist, (4) SGLT2i) at >=50% of goal trial dosages as outlined in the CCS/CHFS 2021 HFrEF guidelines in the midodrine group and control groups.
Measured: Days 0, 4 (or hospital discharge if earlier), and at up to 4 weeks (Day 27) at the end of the protocol..
Heart Failure Collaboratory(HFC) score
Heart Failure Collaboratory score calculated in the midodrine and control groups. Minimum 0, Maximum 8, with higher scores reflecting better outcomes.
Measured: Days 0, 4 (or hospital discharge if earlier), and at up to 4 weeks (Day 27) at the end of the protocol..
Number of hospital re-admissions within 4 weeks of inpatient exposure period
Number of hospital admissions in the timeframe specified in both midodrine and control groups.
Measured: From time of study Day 0 to 28 days (inclusive) after inpatient exposure period (up to five days).
Number of hospitalizations for heart failure within 4 weeks of inpatient exposure period
Number of hospital admissions for heart failure in the timeframe specified in both midodrine and control groups.
Measured: From time of study Day 0 to 28 days (inclusive) after inpatient exposure period (up to five days).
Number of deaths within 4 weeks of protocol completion
Number of deaths in the timeframe specified in both midodrine and control groups.
Measured: From time of study Day 0 to 28 days (inclusive) after inpatient exposure period (up to five days).
Heart rate
Heart rate average measurement at baseline at time of enrolment and Day 4 (or hospital discharge if earlier) in both midodrine and control groups.
Measured: Physiologic parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Sodium laboratory value
Blood test. Units in mmol/L.
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Potassium laboratory value
Blood test. Units in mmol/L.
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Chloride laboratory value
Blood test. Units in mmol/L.
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Bicarbonate (HCO3) laboratory value
Blood test. Units in mmol/L.
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Urea laboratory value
Blood test. Units in mmol/L.
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Creatinine laboratory value
Blood test. Units in micromol/L (umol/L)
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Alanine Transaminase (ALT) laboratory value
Blood test. Units in U/L (Units/L)
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Aspartate Transaminase (AST) laboratory value
Blood test. Units in U/L (Units/L)
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Alkaline Phosphatase (ALP) laboratory value
Blood test. Units in U/L (Units/L)
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Total Bilirubin (TBili) laboratory value
Blood test. Units in micromol/L (umol/L).
Measured: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 May 2024
- Study start7 Aug 2026
- Primary completion1 Jun 2028 (estimated)
- Study completion1 Jun 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Heart Failure With Reduced Ejection FractionStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2/3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Participants are randomized in a 1:1 fashion to either the treatment arm (midodrine + standard of care) or control (no-midodrine, standard of care).
- Masking
- None (open label)
- Enrolment
- 56 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Ottawa Heart Institute Research Corporation
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Ian Paterson, MD, Principal investigator, Ottawa Heart Institute Research Corporation
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06405555
- Sponsor's protocol ID
- 5784
- Acronym
- MIDOH-HF-P
- Status last verified
- Aug 2026
- First submitted
- 25 Apr 2024
- Last updated
- 8 Sep 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Deidentified IPD will be made available upon request to qualified researchers requesting the data for scientific analysis.
Study at a glance
From the registry record, last updated by the sponsor on 8 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Midodrine in Heart Failure With Reduced Ejection Fraction With Hypotension: A Pilot, Open-label, Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT06405555
- Acronym / sponsor ID
- MIDOH-HF-P / 5784
- Keywords
- Heart Failure, GDMT, Midodrine
- Phase
- Phase 2/3
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 56 participants (estimated)
- Lead sponsor
- Ottawa Heart Institute Research CorporationUniversity, hospital or other
- Study start
- 7 Aug 2026 (actual)
- Primary completion
- 1 Jun 2028 (estimated)
- Study completion
- 1 Jun 2028 (estimated)
- First posted
- 8 May 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The evidence-based pharmacologic treatments available for patients with heart failure with reduced ejection fraction (HFrEF) has been established over the last few decades of cardiovascular research. These treatments, termed Foundational Guideline-Directed-Medical Therapies (GDMT), prolong patient life, improve patient-reported symptoms, and reduce hospitalizations for heart failure. A direct effect of most medication classes encompassed within GDMT is the reduction in blood pressure due to their mechanisms of action. In addition, as patients with HFrEF become more advanced in their disease, a significant proportion develop hypotension related to pump failure and autonomic dysfunction, amongst other possible mechanisms. As a result, a significant proportion of HFrEF patients are not optimized on GDMT with hypotension as their limiting barrier that would otherwise have served to improve their heart function, heart failure symptoms, and mortality. Currently, there does not exist any evidence-based strategies to address the problem of hypotension in HFrEF patients who are not optimized on GDMT.
Midodrine is an alpha-adrenergic agonist (α1-AR) that exerts its effects on peripheral venous and arteriolar vasculature to increase blood pressure. This medication has been used off-label by some clinicians in the hypotensive HFrEF population to increase blood pressure and has been reported to have beneficial effects in improving GDMT utilization as well as increasing left ventricular ejection fraction (LVEF) in published case reports/case series. There does not exist any randomized prospective data on the use of midodrine in the hypotensive HFrEF population. The investigators' objective is to complete the first open-label, randomized control trial of midodrine in the hypotensive HFrEF population to demonstrate feasibility in performing a trial in this patient population and to show efficacy in increasing blood pressure without associated harm. The results of this trial will be used as the foundation and rationale for future studies assessing the impact of midodrine use on GDMT utilization as well as hard cardiovascular outcomes in the hypotensive HFrEF population, including hospitalizations for heart failure and mortality.
Detailed description
This will be a pilot, open-label, randomized controlled trial with the intervention/treatment being midodrine in hospitalized patients with HFrEF. The comparator/control arm will be patients following standard of care, which is to undergo no further pharmacologic intervention directed at hypotension unless clinically indicated. Patients who meet inclusion criteria will be randomized (1:1) to either midodrine group or control group, which will occur at the time of recruitment. In the treatment group, patients will receive midodrine for a total planned duration of up to 5 days, or until hospital discharge, whichever comes first. The midodrine will initially be started at 2.5 mg po TID for 1 day, followed by 5.0 mg po TID x 1 day, 7.5 mg po TID x 1 day, and 10 mg po TID x 2 days. Side effects reported by patients and any adverse drug events will be documented. At the end of the inpatient study period, continuation of midodrine off-label will be at the treating clinician's discretion in the treatment arm.
For patients discharged home less than 1 week from the exposure period, patients will be followed for 2 weeks with the Telehome monitoring program (THM), which is a virtual outpatient service intended to closely follow heart failure patients, to monitor blood pressure, heart rate, weight and adverse events or side effects. For patients discharged home between 1 to 2 weeks from the exposure period, they will be followed for 1 week with THM. For patients discharged after 2 or more weeks from the exposure period, no THM follow-up will occur. Frequency of THM follow-up, as well as inpatient monitoring parameters is as outlined in the "Data Capture" section.
Key clinical measurements will be obtained in both treatment and control arms including blood pressure measurements (every 6 hours while awake, with each measurement in the treatment arm consisting of BP measured 1 hour after the administration of midodrine dose and in the supine position. For patients in the control arm, a similar frequency of blood pressures will be obtained at pre-specified times), NT-proBNP at the time of recruitment (Day 0, prior to administration of midodrine in treatment arm) and after 5 days (ie. Sample obtained at time of last dose at Day 4 or at Day 5) or hospital discharge (whichever comes first). Safety outcomes will be monitored for and assessed. The study will be open-label and neither the patient nor the treating physicians will be blinded in this study.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- Participants are randomized in a 1:1 fashion to either the treatment arm (midodrine + standard of care) or control (no-midodrine, standard of care).
| Arm | Type | Receives |
|---|---|---|
| Midodrine treatment | Experimental | Drug: Midodrine Oral TabletPatients randomized to receive midodrine for up to 5 days in hospital at escalating doses starting at 2.5 mg po TID x 1 day, 5.0 mg po TID x 1 day, 7.5 mg po TID x 1 day, 10 mg po TID x 2 days. Patients may be discharged from hospital prior to completion of the full 5 day protocol. All patients in the midodrine treatment arm will receive otherwise usual standard of care treatments. |
| Control | No intervention | –Patients randomized to the control arm will receive usual standard of care treatments without addition of midodrine. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Adults >= 18 years of age.
- LVEF <= 40 % within the last 3 months as determined by any one of: Transthoracic echocardiogram, transesophageal echocardiogram, cardiac magnetic resonance imaging, MUGA scan, angiogram with left ventriculogram.
- AHA/ACC Stage B or C Heart Failure
- Hospitalized patients in the ward setting OR in the cardiac intensive care unit (who are >= 48 hours after their last dose of vasopressor or inotrope).
- Seated upright or supine SBP <= 100 mmHg on two or more consecutive BP measurements separated by at least 8 hours
Key exclusion criteria (20 listed)
- Patient OR substitute decision-maker (SDM) unwilling or unable to provide informed consent
- Documented allergy or intolerance to midodrine
- Treatment for active infection (either documented infection or empiric treatment) with antimicrobials at the time of recruitment.
- Current use OR any use within the last 48 hours of an intravenous inotrope or vasopressor medication OR the need for IV inotrope or vasoproessor use to treat hypotension
- Patient within 72 hours of an acute coronary syndrome.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Midodrine Oral TabletAlso: Midodrine hydrochlorideExposure to up to 5 days of midodrine (or until hospital discharge) in hospital at escalating doses with the following protocol: 2.5 mg po TID x 1 day, 5.0 mg po TID x 1 day, 7.5 mg po TID x 1 day, 10 mg po TID x 2 days. | Drug | Midodrine treatment |
Primary outcome
Enrollment rate
Time frame: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Number of participants enrolled per week
Percent enrollment
Time frame: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Number of participants enrolled divided by number screened eligible
Randomization proportion
Time frame: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Number of participants randomized divided by number of participants enrolled
Percentage of protocol completion
Time frame: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Number of participants completing the study protocol divided by the number of participants randomized.
Percentage lost to follow-up
Time frame: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)
Number of participants lost to follow-up divided by number of participants randomized.
23 secondary outcomes
SBP at baseline compared to Day 4 or hospital discharge if earlier
Time frame: Measures from time of enrolment (Day -1 or 0) and Day 4, or hospital discharge if earlier
Proportion of patients achieving sBP > 105 mmHg on Day 4 or hospital discharge if earlier
Time frame: Measurement from Day 4 of study protocol, or hospital discharge if earlier
DBP at baseline compared to Day 4 or hospital discharge if earlier
Time frame: Measures from time of enrolment (Day -1 or 0) and Day 4, or hospital discharge if earlier
NT-proBNP at baseline compared to Day 4 or hospital discharge if earlier.
Time frame: Measures from time of enrolment (Day -1, or earlier if available) and Day 4, or hospital discharge if earlier
Time from randomization to hospital discharge (days).
Time frame: From the date of participant randomization to the date of discharge from hospital (to home, rehabilitation or transitional institution, long-term care/nursing home), up to 4 weeks.
Hypotension events with SBP<80 mmHg within 48 hours of discontinuation of midodrine not attributable to other reversible causes
Time frame: From time of study Day 4 (or last day of midodrine exposure) up to 48 hours after last exposure.
Number of GDMT drugs at any dosage
Time frame: Days 0, 4 (or hospital discharge if earlier), and at up to 4 weeks (Day 27) at the end of the protocol..
Number of GDMT drugs at >= 50% of goal trial dosages as outlined in clinical practice guidelines
Time frame: Days 0, 4 (or hospital discharge if earlier), and at up to 4 weeks (Day 27) at the end of the protocol..
Heart Failure Collaboratory(HFC) score
Time frame: Days 0, 4 (or hospital discharge if earlier), and at up to 4 weeks (Day 27) at the end of the protocol..
Number of hospital re-admissions within 4 weeks of inpatient exposure period
Time frame: From time of study Day 0 to 28 days (inclusive) after inpatient exposure period (up to five days).
Number of hospitalizations for heart failure within 4 weeks of inpatient exposure period
Time frame: From time of study Day 0 to 28 days (inclusive) after inpatient exposure period (up to five days).
Number of deaths within 4 weeks of protocol completion
Time frame: From time of study Day 0 to 28 days (inclusive) after inpatient exposure period (up to five days).
Heart rate
Time frame: Physiologic parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Sodium laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Potassium laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Chloride laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Bicarbonate (HCO3) laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Urea laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Creatinine laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Alanine Transaminase (ALT) laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Aspartate Transaminase (AST) laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Alkaline Phosphatase (ALP) laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Total Bilirubin (TBili) laboratory value
Time frame: Biochemical parameters at baseline and Day 4 (if available) or hospital discharge if earlier.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 Sep 2026.
- Individual participant dataSharing planned: Yes. Deidentified IPD will be made available upon request to qualified researchers requesting the data for scientific analysis.
Related trials for Heart Failure With Reduced Ejection Fraction
Recruiting
Assessment of CCM in HF With Higher Ejection Fraction
Heart Failure, Heart Failure With Preserved Ejection Fraction
Recruiting
Synchronized Diaphragmatic Stimulation in Symptomatic Heart Failure
Heart Failure With Reduced Ejection Fraction
RecruitingPhase 2
A Study to Learn About the Study Medicine Called PF-07328948 in Adults With Heart Failure (BRANCH-HF)
Heart Failure
RecruitingPhase 3
Qishen Yiqi Dripping Pills in Treatment of Chronic Heart FailUre
Heart Failure
RecruitingPhase 1/2
Endocardial Delivery for Myocardial Regeneration Using Allogeneic iPSC-derived Cardiomyocyte Spheroids for HF With Systolic Dysfunction (EMERALD Study)
Heart Failure, Ischemic Heart Failure
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Shihab Sarwar, MD contact
Ian Paterson, MD principal investigator
Ottawa Heart Institute Research Corporation
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2/3 study testing Midodrine Oral Tablet in people with Heart Failure With Reduced Ejection Fraction and Hypotension, run by Ottawa Heart Institute Research Corporation at 1 site in Canada.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 8 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Ian Paterson, MD (6136967000, dpaterson@ottawaheart.ca), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Enrollment rate (time frame: From the date of enrolment of the first study participant, to the date of enrolment of up to 56 patients, assessed up to a maximum of 80 weeks (20 months)). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Sep 2026.