Clinical trial Recruiting at 1 site Phase 3 Interventional Ages 18 to 75

Ivabradine for cardiogenic shock after a heart attack

Official title: Ivabradine in the Acute Management of Cardiogenic Shock - IVASHOCK-a Double-blind Randomized Controlled Trial

Run by National Institute of Cardiovascular Diseases, Pakistan · NCT07714746 · Data updated 2026-11-12

A study tests whether taking ivabradine can help people with cardiogenic shock after a heart attack move down at least one class on the SCAI scale and need less time on blood pressure or heart-support medicines.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment200 (estimated)
SponsorNational Institute of Cardiovascular Diseases, Pakistan
Academic / other
Locations1 site (Karachi)
StatusRecruiting
StartedApril 20, 2026
Main results expectedMay 31, 2027
Study endsMay 31, 2027
Registry record updatedJuly 20, 2026
Trial IDNCT07714746 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18–75 with STEMI complicated by cardiogenic shock (SCAI shock stage > C) who have high heart rates and for whom beta-blockers cannot be started.

Probably not a fit

Patients who do not meet the target SCAI improvement or who experience intolerable adverse effects may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This phase 3 randomized trial compares ivabradine to placebo in adults with STEMI complicated by cardiogenic shock. Participants receive oral ivabradine 5 mg every 12 hours for 3 days, with safety monitoring for rhythm and conduction issues and drug-related hypotension. Primary goals are to see if ivabradine improves the SCAI cardiogenic shock classification by at least one level within 72 hours and to determine if it enables earlier weaning from vasoactive and inotropic support. Secondary safety endpoints include sinus node dysfunction, atrial fibrillation or flutter, AV block, hypotension, and ventricular arrhythmias. Hemodynamic and metabolic parameters are repeatedly measured, including arterial pH, ScvO2, and lactate.

Why it matters

Potential benefit: If successful, ivabradine could help stabilize patients faster and reduce dependence on other heart-support medications.

How similar studies have gone: Previous similar approaches in cardiogenic shock are limited; this remains a novel investigation in this specific setting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients aged 18-75 years diagnosed with STEMI complicated by cardiogenic shock (CS) as defined by SCAI shock classification \> C:

Signs of Hypoperfusion including:

1. SBP \<90 OR MAP \<60 OR \>30 mmHg drop from baseline AND drugs/device used to maintain BP above these targets
2. Cold, clammy extremities
3. Urine output \<30 mL/h
4. pulmonary congestion (either crackles, congestion in chest X-ray or B-lines in lung US)
5. Mixed venous oxygen saturation ≤ 65%

   * Severe Left ventricular (LV) dysfunction or right ventricular (RV) infarction
   * Heart rate (HR) ≥ 100 bpm (Sinus Rhythm) in whom beta-blocker therapy cannot be initiated, including: On inotropic or vasopressor support, Requiring an intra-aortic balloon pump (IABP), With Killip class III or IV, Requiring BiPAP or mechanical ventilation

Exclusion Criteria:

* Age \> 75 years
* CPR \> 12 mints
* Atrial fibrillation
* Complete Heart Block
* Heart rate of \< 100 bpm
* End stage Renal Disease
* Extensive comorbidities; Prior CVA, Malignancy, Pregnancy or Ongoing Participation in Other Trials

Where it's running

  • National institute of cardiovascular diseases
    Karachi, Pakistan
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.