There are about 173942 clinical studies being (or have been) conducted in United States. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The purpose is to compare long term occurrence of atrial arrhythmias including atrial fibrillation (AF) and thromboembolic complications including cerebrovascular events (CVE) in patients with typical atrial flutter (AFLT) undergoing cavo-tricuspid isthmus (CTI) ablation alone versus CTI ablation combined with pulmonary vein isolation (PVI).
The investigators goal is to pilot a substance use-related brief intervention (BI) for youth with chronic medical conditions, obtaining preliminary evidence of feasibility, acceptability and impacts of the approach for reducing substance use among this group.
The purpose of this study is to evaluate whether taking thyroid hormone medication with beverages other than water, decreases absorption of the medication by the intestine. Specifically we are interested in whether coffee, coffee with milk, or black tea affects how thyroid medication is absorbed by the body. Previous studies have suggested that taking thyroid hormone with coffee may interfere with the ability to absorb thyroid medicine. Given that many patients take their thyroid medicine with beverages other than water, and specifically with coffee or tea, understanding whether and how much coffee or tea may decrease thyroid hormone absorption is important for clinical practice. This study will help determine the safest and most effective way for adults to take their thyroid medication and will guide medical practitioners in how to counsel their patients when they prescribe thyroid hormone.
This study aims to assess the quality of wound healing in abdominal scars with and without the Prevena Incision Management System. The hypothesis is that Prevena will lead to improved wound healing with less swelling, bruising, and inflammation, as well as less potential for infection, seroma, and dehiscence.
This study will help researchers learn more about non-Hodgkin's lymphoma and Hodgkin's lymphoma and how it is treated in Kenya. Researchers want to see if having certain viruses like Epstein Barr Virus (EBV), Human Immunodeficiency Virus (HIV), and Kaposi's Sarcoma Herpes Virus (KSHV) affects lymphoma. Patients in Kenya who agree to be in this study will let the resesarchers look at their medical record, follow their normal cancer care, and have blood drawn to look at different proteins and viruses. Researchers would also like to look at part of the original tumor that was taken out of each patient. Some of these samples will be stored at Kenyatta National Hospital and research will be done on them later. This study does not involve any change in treatment, but only allows the study team to follow how a patient in Kenya with lymphoma is treated.
The purpose of this study is to investigate Gulf War 1 Veteran (GW1V) patient perceptions of, and satisfaction with, their VA primary care treatment, and physician effectiveness in delivering improved point of service, in the Primary Care Clinics at the Veterans Administration (VA) Salt Lake City Health Care System.
This study will compare response to treatment of Eosinophilic Esophagitis with montelukast vs standard therapy fluticasone. Investigators hypothesize that montelukast is equally effective in treating symptoms and histology of EoE when compared to fluticasone. The study will be conducted at multiple sites with Medical College of Wisconsin as the coordinating site. After identification and recruitment all patients will be randomized (provider blinded) to one of two medications: montelukast 10mg po qday vs fluticasone 440mcg po bid. Patients will also complete a pretreatment, 6 week therapy and 12 week therapy questionaire. They will then undergo a repeat endoscopy to evaluate endoscopic and histologic response.
Thank you for your interest in our Blood Pressure Research Study. The American Heart Association is sponsoring us to investigate why patients develop high blood pressure, atherosclerosis (hardening of the arteries), and heart disease. There are two parts of our research program. The first part is a screening visit. At this visit you will be given a brief physical exam and will be asked questions concerning your medical history. During the same visit you will have your blood drawn for routine screening and genetic testing. You will also be asked to collect a urine sample for routine screening. If the doctor finds that you are a healthy candidate you will be invited to participate in the second part of the study. During Phase II, we will perform physiological tests after you are placed on a low salt diet and again after you are placed on a higher salt diet. If you are on blood pressure medication, it may be necessary to discontinue taking your present medication for up to three months before beginning the study. Patients discontinuing their current blood pressure medication may be placed on a different blood pressure medication during this 'washout' period if necessary to maintain blood pressure at pre-study levels. Once your blood pressure medications are discontinued, you will be closely monitored. If you do not own a home blood pressure monitor, we will provide one for you to use during the study so that you can keep a daily record of your blood pressure readings. We will ask you to call us every three days to report your blood pressure readings. After you have stopped taking your medication, dietitians at the hospital will make you low salt meals to eat at home for about seven days. On the last day of the low salt diet, you will be asked to begin a 24-hour urine collection that you will bring with you when you are admitted to the hospital that evening. That morning, you will be required to come to the Center for Clinical Investigations (CCI) at Brigham and Women's Hospital for a one-hour test to check if your body is in the correct salt balance. You will return that evening to the CCI where you will be admitted for your study that will occur the next morning. On the morning of your low salt study, we will collect some blood samples. We will also take ultrasound pictures of your heart to see how salt and hormones affect the way your heart and blood vessels functions. These tests will last approximately 5 hours and you will be discharged around 2:00 PM. For the next 5-7 days, you will be placed on a liberal salt diet. During this diet period, you will eat all your own food, but we will give you some supplements to add to your meals. After 5-7 days on your liberal salt diet, on the morning of your second admission to the hospital, you will be asked to begin a final 24-hour urine collection. That morning, you will again be required to come to the CCI for a blood test, and you will return later that evening to the inpatient CCI where you will be admitted for your final overnight study. The same study that was done for the low salt diet will be repeated for the liberal salt study. You will be discharged at around 2:00 p.m. These studies will help to determine if you are salt-sensitive. In addition, we hope to learn more about the hormones that regulate your blood pressure and the genes responsible for regulating those hormones. You will be placed back on your initial blood pressure medication (if you are on any) and returned to your regular physician for care. We can also provide clinically relevant information to you.
The purpose of this study is to determine how B cell subsets and autoantibodies are related to disease remission after rituximab treatment in subjects with Systemic Lupus Erythematosus (SLE).
1% Lidocaine with 1:100,000 to 1:200,000 of epinephrine is routinely injected into the nasal mucosa during nasal surgery to reduce patient blood loss and improve the surgical field and visibility. Typically 1% lidocaine with 1:100,000 of epinephrine is used in nasal surgery. However, 1 % lidocaine with 1:200,000 (which is a more dilute solution of epinephrine) is also used. This latter dose theoretically should have a lesser effect on cardiac stimulation which increases the heart rate and blood pressure at the time of surgery. The nasal mucosa has excellent absorbing ability which is great for the application of drugs but there is concern for systemic absorption and side effects. Potential serious side effects can occur with local injection such as hypertension, tachycardia, and cardiac arrhythmias. These side effects occur mainly through the absorption of epinephrine. It is the goal of this study to see if a weaker concentration of epinephrine (1:200,000) can maintain a good surgical field with a decrease in hemodynamic side effects.