Heart conduction disease

This trial investigates whether guanfacine or cromolyn sodium—two drugs already approved for other conditions—can improve physical functioning and reduce symptoms like fatigue, brain fog, and gastrointestinal issues in adults with postural orthostatic tachycardia syndrome (POTS).…

This study tests whether pacing the heart from a specific spot (posterosuperior bundle) can lower the chance of atrial fibrillation (AF) in people with sinus node dysfunction (a slow or irregular heartbeat). About 300 adults who need a pacemaker will be randomly assigned to get p…

This trial tests an investigational medicine called ATR 1072 in adults with PRKAG2 syndrome, a genetic condition that causes abnormal heart muscle thickening and rhythm problems. The drug is designed to reduce the activity of the faulty PRKAG2 gene. Researchers are evaluating its…

This study tests a newer, more natural pacing method for people with heart failure and electrical problems in the heart. The approach uses the heart's own conduction system to improve coordination between chambers. Researchers will track patients for two years to see if this meth…

This study tests whether a wearable monitoring system (ECG patch, temperature patch, and pulse oximeter) can reduce major heart complications in hospitalized patients with heart disease. About 1500 adults will be monitored either with standard care (vital signs every 4-8 hours) o…

This study looks at whether setting a pacemaker to a personalized rate of 75 beats per minute, instead of the usual 50-60, can improve heart function and blood flow to the brain in people with high blood pressure and a slow heart rate. About 70 patients aged 65 and older will be …

This study tests a new, small pacemaker that doesn't need wires (leads) to help people with a slow heartbeat. About 15 adults with certain heart rhythm problems will get the device to see if it's safe and works well. The pacemaker is placed directly in the heart to keep the beat …

This early study tests a new, wire-free pacemaker (ALPS) in 10 people with bradycardia (slow heart rate). The goal is to see if it is safe and works well. Participants will be monitored for device-related problems and how well the pacemaker controls their heart rhythm.

This trial tests two different heart pacing leads—one without a hollow core (lumenless) and one with a stylet—to see which works better for left bundle branch pacing. About 288 people with slow heart rhythms will take part. Doctors will use continuous monitoring to guide the lead…

This small study will test whether empagliflozin, a drug typically used for diabetes, can improve abnormal heart patterns in people with Brugada syndrome. Ten participants will take the drug daily for three months, and researchers will monitor their heart rhythms and any side eff…

This trial tests whether a 4-electrode tablet-based ECG (DigitalCardio) can record heart activity as quickly and clearly as the standard 10-electrode ECG. About 50 cardiology patients will undergo both methods in random order. Researchers will measure recording time and compare t…

This study will test a new device that measures blood pressure and heart function continuously without needles. It will be used during standard autonomic function tests (like the Valsalva maneuver and tilt table) in 75 patients with orthostatic intolerance. The goal is to see if …

This study tests whether regular breathing exercises can improve symptoms of Postural Tachycardia Syndrome (POTS), a condition that causes dizziness and rapid heartbeat when standing. Twelve adults with POTS will practice breathing exercises daily for four weeks while researchers…

This study compares two types of nerve blocks—Intertransverse Process Block and M-TAPA—for pain after laparoscopic gallbladder removal. Sixty adults will be randomly assigned to receive one of the blocks. The main goal is to see which block provides better pain relief and reduces…

This study will compare two types of nerve blocks—Transversalis Fascia Plane Block and M-TAPA—for controlling pain after laparoscopic inguinal hernia repair. Sixty adults aged 18–65 will be randomly assigned to receive one of the blocks before surgery. Researchers will measure pa…

This study compares two types of nerve blocks to control pain after laparoscopic hysterectomy. Sixty women aged 18-65 will receive either an Intertransverse Process Block or an M-TAPA block. The main goal is to see which block provides better pain relief in the first 24 hours aft…

This phase 2 trial tests whether mirabegron, a drug currently used for overactive bladder, can reduce symptoms of Postural Orthostatic Tachycardia Syndrome (POTS). Thirty-six adults with confirmed POTS will receive either mirabegron or a placebo. The main goal is to see if the dr…

This study tests whether low dose naltrexone (LDN) can reduce fatigue in people with Postural Orthostatic Tachycardia Syndrome (POTS). Eighty participants will receive either LDN or a placebo for 4 months. The goal is to see if LDN improves fatigue and quality of life.

This pilot study tests a non-invasive ear stimulation device (aVNT) in 30 people with Postural Orthostatic Tachycardia Syndrome (POTS). The goal is to see if it can reduce rapid heart rate upon standing, improve blood flow to the brain, and ease other symptoms like brain fog and …

This pilot study from Stanford tests whether a stellate ganglion block (a nerve block in the neck) can reduce symptoms of Postural Tachycardia Syndrome (POTS). Twenty adults with POTS will receive either the nerve block or a sham injection. Researchers will track changes in auton…

This study tests a device that stimulates a nerve in the ear to see if it can help people with POTS, a condition that causes a racing heart and dizziness when standing. Twenty-four adults with POTS will receive both active and sham stimulation in a crossover design. The main goal…

This study will follow 100 health science students for at least 10 years to understand why some people with very flexible joints (hypermobility) develop chronic pain, fatigue, and other health issues while others do not. Researchers will measure balance, heart rate, and quality o…

This observational study will follow 200 adults with Brugada Syndrome who need anesthesia for surgery or other procedures. Researchers want to see how often dangerous heart rhythms occur during and up to 30 days after anesthesia. They will also check if certain anesthetic drugs o…

This study will compare two newer pacemaker technologies—left bundle branch area pacing and leadless pacing—to see how they affect heart function and the tricuspid valve. Twenty adults with certain heart block conditions will receive both types temporarily during their routine pa…

This study looks at how sarcopenia (age-related muscle loss) is connected to fatigue and orthostatic intolerance (dizziness when standing up) in people aged 65 and older. Researchers will compare 90 older adults with and without sarcopenia to see if those with muscle loss experie…

This observational study will enroll 1,000 pregnant women and their fetuses to establish normal ranges for heart sounds and ECGs. The goal is to develop early warning systems for serious heart events in mothers, progression of fetal heart defects, and autoimmune-related fetal hea…

This study looks back at medical records of 220 patients who had a procedure called radiofrequency ablation for heart rhythm issues. The goal is to compare how well the procedure works for two types of abnormal heart connections. Researchers hope to find which type is easier to t…

This study aims to see if artificial intelligence can predict serious heart rhythm problems, like atrial fibrillation, after high-risk surgeries. Researchers will record ECGs from 300 adults before surgery and analyze over 200 heart cycle parameters to find the best prediction me…

This study will check if people with metastatic breast or colon cancer have antibodies that might also attack the heart. Researchers will collect blood samples and ECGs from 196 participants over 12 months. The goal is to see if these antibodies raise the risk of dangerous heart …

This study will follow 500 people with dual-chamber pacemakers to see how the pacemaker's programming affects the development of permanent atrial fibrillation (AF), a common heart rhythm problem. Researchers will track AF episodes, quality of life, hospitalizations, and deaths ov…