Active clinical trials for "Thyroid Diseases"

This study will examine how body metabolism adjusts to small changes in environmental temperature and how it may be related to weight loss. Healthy, non-obese individuals between 18 and 60 years of age may be eligible for this study. The study consists of one screening visit and one 5-day admission to the NIH Clinical Center for the following procedures: Diet: Participants follow a proscribed diet consisting of 50% carbohydrates, 20% protein and 30% fat. DEXA scan to measure body fat. Subjects lie on a table above a source of X-rays while a very small dose of X-rays is passed through the body. Air displacement plethysmography (Bod-Pod) to study fat composition: Subjects sit in a small booth for 10 minutes wearing a swim suit and breathing normally through a tube. This test measures the person s weight and volume precisely. Metabolic room: Subjects stay 12 hours in a specialized room designed to measure the amount of oxygen breathed in and the amount of carbon dioxide breathed out. The room contains a private toilet and sink, treadmill, bed, desk, window, telephone and computer with television and internet access. While in this room, subjects undergo the following: Continuous heart rate monitor: Subjects wear an EKG monitor to analyze heart rate variability. Spontaneous movements: Subjects wear portable accelerometers at the hip and wrist to measure spontaneous physical movements. Continuous temperature monitor: Subjects swallow a small capsule that transmits internal body temperature via miniature, wireless sensors. Adhesive patches placed on the skin monitor external body temperature. Blood and urine collections: Subjects collect all of their urine during the 12 hours they are in the metabolic room. Blood samples are taken at specified intervals through a catheter that has been placed in a vein. Microdialysis: A small needle is placed into fat tissue just under the skin on the abdomen. A solution containing a minimal amount of ethanol is infused and samples of fluid are collected every 20 minutes as it leaves the fat pad. This helps determine the metabolism level. This procedure starts 30 minutes before entering the metabolic room and continues until the subject leaves the room. Fat tissue biopsy: A small piece of fat tissue is withdrawn through a needle from under the skin on the abdomen. The sample is used to study fat tissue size and ability to store sugar.

Ideally randomized controlled trials should be carried out to compare the cost-effectiveness between FNAC and watchful waiting but such studies are very difficult to conduct in practice because they require following up very large number of subjects for a long period of time. The aims are to determine the health-related quality of life (HRQOL) and HRQOL preference (utility) of patients undergoing watchful observation (no FNAC) and routine FNAC, and to determine the cost-effectiveness of two strategies in managing small incidental thyroid nodules for the Chinese population in Hong Kong.

This pilot clinical trial studies how will metformin hydrochloride works in mitigating the side effects of radioactive iodine treatment in patients with differentiated thyroid cancer. Metformin hydrochloride may reduce the metabolic activity of cancer cell and of surrounding supportive tissues.

Studies have attempted to control pain and increase patients' recovery satisfaction following many kinds of operations by using as small an opioid analgesic dose as possible and adding a nonopioid analgesic to reduce the side effects of narcotic analgesics. Among nonopioid analgesics, lidocaine and magnesium are drawing attention, having been shown to be helpful in controlling postoperative pain by lowering pain hypersensitivity to surgical stimuli. Lidocaine acts as an antagonist of the N-methyl-D-aspartate (NMDA) receptor. An intraoperative intravenous injection of lidocaine has been reported to improve postoperative pain control by reducing postoperative pain and opioid consumption. Another report showed that an intraoperative intravenous injection of lidocaine improved the quality of postoperative functional recovery after general anesthesia in a laparoscopic cholecystectomy patient. In addition, a review article on the effect of intraoperative intravenous injection of magnesium found it to be an effective analgesic that may be added to conventional opioid-based therapy because it generally reduces opioid consumption, decreases pain assessment for 24 hours after surgery, and lacks severe side effects in relation to magnesium administration. However, there has been insufficient research comparing the intraoperative intravenous injection of lidocaine or magnesium in terms of which is more helpful for general functional recovery and decreased postoperative pain. Recently, the scope of research on anesthesia has come to embrace postanesthetic recovery; to help patients return to daily life, the research trend is now shifting from the improvement or resolution of a specific symptom to the measurement of general recovery. Postoperative recovery is a complicated process related to such catamnestic factors as physiological end-points, the incidence of adverse events, and changes in psychological status. A widely used method to measure postoperative recovery is the Quality of Recovery 40 (QoR-40) survey. The QoR-40 includes a total of 40 questions that may be divided into five sub-categories: emotional state, physical comfort, psychological support, physical independence, and pain. The respondent answers each question on a 5-point scale, with one being worst and five being best. The QoR-40 takes 6.3 minutes on average to complete and is known to have good test-retest reliability, internal consistency, and split-half reliability. With respect to anesthetic recovery, the QoR-40 has been used in various studies to investigate how the surgery type, anesthesia method, administration of an additional drug, and gender affect anesthesia and surgery. The validity of the QoR-40 for research purposes has already been established. Therefore, in this study, we investigated the intraoperative intravenous injection of lidocaine and the intravenous injection of magnesium to compare these drugs' helpfulness in the functional recovery of thyroidectomy patients after general anesthesia.

This study will examine how two thyroid preparations-levothyroxine (T4) and liothyronine (T3)-affect fat and cholesterol metabolism, blood sugar regulation, and thyrotropin secretion in patients who have had their thyroid gland removed. Results of the study may help in the development of better therapies to optimize blood sugar and cholesterol levels in some patients. Patients 18 years of age or older who have had most or all of their thyroid gland removed and are taking long-term thyroid hormone medication may be eligible for this study after screening.

The primary purpose is to determine how effective AG-013736 is in shrinking thyroid cancer that is resistant to radioactive iodine

This pilot project will randomize a small sample of patients about to undergo surgery for their autoimmune, inflammatory thyroid disease, and determine if a short course of prednisone alters the inflammation of the gland and makes surgery less difficult. It will enroll 30 participants who will each be on study for up to 7 months.

"Effect of intraoperative nerve monitoring on voice quality during thyroid surgery" Thyroidectomy is a quite often surgical procedure applied by both head and neck surgeons and endocrine surgeons.Recent advances in surgical and technological area achieve a remarkable decrease in the complication rates. In case of these advances, patients still have fear related with their voice. In this study, investigators aimed to investigate voice changes during thyroid surgery and effect of intraoperative nerve monitoring to the voice quality.

Maintenance of a remifentanil infusion during anesthetic emergence has been reported to decrease the incidence of coughing and thereby help to ensure a smooth emergence. It may, however, cause respiratory depression and possibly delay emergence. The purpose of this study was to investigate the effect of different dose of dexmedetomidine infusion on cough suppression during emergence from general anesthesia in patients undergoing thyroid surgery. American Society of Anesthesiologists physical status I-II adults undergoing elective thyroidectomy under general anesthesia are recruited and randomly allocated to receive dexmedetomidine iv infusion of 0.2μg·kg-1·h-1 (Group D1, n = 100), 0.5μg·kg-1·h-1 (Group D2, n = 100), 0.7μg·kg-1·h-1 (Group D3, n = 100) or saline (Group C, n = 100). Primary outcome is the incidence of coughing during emergence. Second outcomes include severity of coughing, which is assessed using a four-point scale; Ramsay score, Bruggrmann comfort scale score, VAS pain score are recorded. The respiratory rate (RR), heart rate (HR), and mean arterial pressure are also recorded.

To compare between ligasure versus conventional vessel ligation in thyroidectomy as regards intraoperative and post operative complications rate