Complication Clinical Trials

943 recruitingLast updated: July 25, 2026

There are 943 actively recruiting complication clinical trials across 70 countries. Studies span Not Applicable, Phase 2, Phase 3, Phase 4, Phase 1, Early Phase 1. Top locations include Beijing, Beijing Municipality, China, Boston, Massachusetts, United States, Chicago, Illinois, United States. Updated daily from ClinicalTrials.gov.


Complication Trials at a Glance

943 actively recruiting trials for complication are listed on ClinicalTrialsFinder across 6 cities in 70 countries. The largest study group is Not Applicable with 427 trials, with the heaviest enrollment activity in Beijing, Boston, and Chicago. Lead sponsors running complication studies include Washington University School of Medicine, Karolinska Institutet, and Cairo University.

Browse complication trials by phase

Treatments under study

About Complication Clinical Trials

Looking for clinical trials for Complication? There are currently 14 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Complication trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Complication clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 943 trials

Recruiting

Pregnancy Surveillance Program of Patients Exposed to Epidiolex/Epidyolex During Pregnancy

PregnancyMaternal ComplicationsPregnancy Complication+1 more
Jazz Pharmaceuticals50 enrolled2 locationsNCT06113237
Recruiting
Not Applicable

Impact of a Perioperative Physical Exercise and Respiratory Physiotherapy Program on the Patient Undergoing Bariatric Surgery

Obesity/TherapyBariatric Surgery and Physical ActivityBariatric Surgery Complications+1 more
Fundacin Biomedica Galicia Sur132 enrolled1 locationNCT06987903
Recruiting
Not Applicable

Michigan Healthy Mom (MI-MOM) Pregnancy Improvement Web Application Trial

PregnancyPregnancy OutcomesPregnancy Complications
Michigan State University500 enrolled8 locationsNCT07213284
Recruiting

Prenatal Sonographic Prediction of Placental Histology and Function

Pregnancy Complications
Endeavor Health320 enrolled1 locationNCT06022458
Recruiting
Early Phase 1

A Study to Determine the Preferred Dose of the Drug, Lisinopril, for Preventing Urinary Toxicity Following Radiotherapy for Prostate Cancer

Prostate CancerRadiation ToxicityUrinary Complication
University of Rochester30 enrolled1 locationNCT05530655
Recruiting
Not Applicable

Providing an Optimized and Empowered Pregnancy for You (POPPY) Aim 3: Randomized Controlled Trial

Pregnancy ComplicationsInfant ConditionsAdverse Birth Outcomes+1 more
University of Alabama at Birmingham400 enrolled1 locationNCT06510075
Recruiting

PregnAncy-Related Aortic DISsEction in China

Aortic DissectionMarfan SyndromeLoeys-Dietz Syndrome+3 more
DeltaHealth Hospital · Shanghai500 enrolled4 locationsNCT07672210
Recruiting
Phase 2

Pharmacologic Approaches to Preventing Primary Sclerosing Cholangitis Recurrence After Liver Transplantation

Liver Transplant; ComplicationsPrimary Sclerosing CholangitisPSC+1 more
Mayo Clinic80 enrolled1 locationNCT06905054
Recruiting
Not Applicable

Magnetic Resonance Cholangiopancreatography in Living Liver Donors and Its Relationship With Post Operative Recipient Biliary Complications

Liver Transplant; ComplicationsChronic Liver Disease and CirrhosisDonor Hepatectomy
Institute of Liver and Biliary Sciences, India100 enrolled1 locationNCT07715500
Recruiting
Not Applicable

Serpentine vs Traditional Hydrophilic Guidewire Tracking in Complex Radial Anatomy

Vascular complicationsPercutaneous Coronary Intervention (PCI)Coronary Catheterization+7 more
University Hospital of Patras204 enrolled1 locationNCT07707427
Recruiting
Not Applicable

Evaluation of Proximal Massage and Palm-to-Fist Tapping on Reducing the Risk of Phlebitis

PhlebitisCatheter Complications
Hospital Universitario San Ignacio273 enrolled1 locationNCT07703618
Recruiting

Timing of Opioid Administration and Postoperative Respiratory Depression.

Respiratory ComplicationsOpioid Induced Respiratory DepressionPostoperative Respiratory Complications
Wayne State University52 enrolled1 locationNCT07227389
Recruiting

Factors for Prolonged Hospital Stays in Patients Undergoing ERCP

Post-ERCP Adverse EventsERCP Complications
Air Force Military Medical University, China504 enrolled5 locationsNCT07568626
Recruiting

Observational Study to Deeply Phenotype Major Organs in Sickle Cell Disease After Curative Therapies

Mortality in Sickle CellSickle Cell Cardiopulmonary ComplicationsSickle Cell Organ Damage+2 more
National Heart, Lung, and Blood Institute (NHLBI)200 enrolled1 locationNCT05213572
Recruiting
Not Applicable

Volume Support/Assist Control Mode Ventilation and Diaphragmatic Atrophy

Mechanical Ventilation Complication
University of Chicago468 enrolled2 locationsNCT03901924
Recruiting
Not Applicable

Effect of Alcohol Sclerotherapy on Pelvic Pain and Quality of Life in Women With Ovarian Endometriosis

EndometriomaQuality of LifeUltrasound Therapy; Complications+1 more
Hospital Universitari de Bellvitge288 enrolled28 locationsNCT06955221
Recruiting
Not Applicable

Scaffold-guided Breast Implant Revision and Primary Breast Augmentation Surgery

Breast Augmentation ComplicationsPrimary Breast Augmentation SurgeryBreast implant revision
BellaSeno Pty Ltd87 enrolled3 locationsNCT07367698
Recruiting

Persona Revision Knee System Outcomes

Knee OsteoarthritisInfectionArthroplasty Complications+1 more
Zimmer Biomet380 enrolled16 locationsNCT04821154
Recruiting
Not Applicable

Does Ethyl Chloride Spray Work?

Injection FearInjection Pain PreventionInjection Complication
University of Chicago300 enrolled1 locationNCT06651788
Recruiting

China Research for Severe Spontaneous Intracerebral Hemorrhage(CRISIH)

Emergency surgeryComplicationsDisorders of Consciousness+2 more
Beijing Tiantan Hospital2,000 enrolled1 locationNCT05975398