Comparing Adenosine and Verapamil for Treating Paroxysmal Supraventricular Tachycardia

Comparison of Verapamil With Adenosine After Vagal Maneuvers in Patients Presenting With Paroxysmal Supraventricular Tachycardia (pSVT), in a Tertiary Care Hospital of Lahore, Pakistan

PHASE3 · Rashid Latif Medical College · NCT06717685

This study tests whether adenosine or verapamil works better to stop episodes of rapid heartbeats in people with paroxysmal supraventricular tachycardia.

Quick facts

PhasePHASE3
Study typeInterventional
Enrollment210 (estimated)
Ages18 Years to 70 Years
SexAll
SponsorRashid Latif Medical College (other)
Locations1 site (Lahore, Punjab Province)
Trial IDNCT06717685 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the effectiveness of adenosine versus verapamil in treating patients with paroxysmal supraventricular tachycardia (PSVT). After performing a carotid sinus massage, patients will undergo either a conventional or modified Valsalva maneuver. If normal sinus rhythm is not restored, they will receive either adenosine or verapamil based on random assignment. The study aims to determine which medication is more effective in terminating PSVT episodes.

Who should consider this trial

Good fit: Ideal candidates are patients with stable PSVT who are conscious and able to provide consent.

Not a fit: Patients with unstable SVT, those unable to give consent, or those with certain cardiac conditions will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a more effective treatment option for patients experiencing PSVT, potentially reducing symptoms and improving quality of life.

How similar studies have performed: Previous studies have shown varying success rates for similar interventions, but this specific comparison of adenosine and verapamil in this context is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Stable SVT (not requiring cardioversion, fully conscious, maintaining systolic blood pressure of \>90mmHg)
* Alert enough and able to give consent
* Able to lie flat and non-painful legs during passive leg raising

Exclusion Criteria:

* Unstable SVT (Semiconscious, drowsy, breathless, systolic BP \<90mmHg)
* Not able to give consent
* Orthopnea causing inability to lie flat
* Atrial fibrillation/atrial flutter
* Recent MI (within last 7 days)
* Ongoing ischemia as indicated by chest pain or ST segment depression/elevation in ECG
* Aortic stenosis
* All trimesters of pregnancy

Where this trial is running

Lahore, Punjab Province

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Supraventricular Tachycardia, Ventricular, Tachycardia

Last reviewed 2026-05-15 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.