Clinical Research Directory

Natural History of Depression, Bipolar Disorder and Suicide Risk

Mood disorders, such as depression and bipolar disorder, are difficult to treat. One reason is that there are no objective ways to measure how these disorders affect the body and respond to different treatments. In this study, researchers want to perform tests on people undergoing clinical care for mood disorders. The purpose is to understand the experience of receiving treatment for depression, bipolar disorder, and suicide risk. We also hope that this study will help us to predict which medications will improve thoughts of suicide. People 18 years or older who are receiving treatment for depression, bipolar disorder, or suicide risk may take part in this study. Participants must have also been enrolled in protocol 01-M-0254. This study will be conducted at the NIH Clinical Center in Bethesda, MD. The study typically lasts up to 12 weeks, but may last longer if a participant s treatment continues past that time. Participants will have weekly interviews and questionnaires while they are being treated for their mood disorder. Other tests are optional and include psychological testing, blood draws, sleep tests, and imaging scans. These will be done at the start and the end of research participation.

Cognitive Outcomes After Dexmedetomidine Sedation in Cardiac Surgery Patients

Anesthesia is a drug induced, reversible, comatose state that facilitates surgery and it is widely assumed that cognition returns to baseline after anesthetics have been eliminated. However, many patients have persistent memory impairment for weeks to months after surgery. Cardiac surgery appears to carry the highest risk of postoperative cognitive dysfunction (POCD). These cognitive deficits are associated with increased mortality, prolonged hospital stay and loss of independence. The investigators propose to investigate the role of Dexmedetomidine (DEX) in preventing long-term POCD after cardiac surgery and enhancing early postoperative recovery. It is anticipated that DEX will be the first effective preventative therapy for POCD, improve patient outcomes, and reduce length of stay and healthcare costs.

Comparison of 2 Different Methods in Infraclavicular Block

Background :The investigators wanted to see if dexamethasone, which is routinely used as an adjuvant tool by different anesthesiologists in the orthopedics operating room, can really start the effect of other local anesthetics early and prolong the duration of action during infraclavicular block, and giving less additional analgesics after surgery. Aims:The investigators plan to determine whether this outcome of , dexamethasone which is routinely used as an adjuvant tool to prolong postoperative analgesia. Methods :60 participants will be included in the study. It includes participants the age of 18, who do not have lung disease such as COPD (Chronic Obstructive Pulmonary Disease), who will undergo infraclavicular block, and who are mentally healthy with ASA I-III.After obtaining written consent from the premedication unit from the participants who were preoperatively evaluated, a vascular access will be opened in the non-operated arm and 0.09% NaCl will be started and 0.05 mg/kg midazolam will be given. All patients will be monitored. With nasal cannula, 3lt/min O2 will be started. 3lt/min O2 will be started with nasal cannula. Patients who underwent infraclavicular block by lateral sagittal method under USG(ultrasound) guidance by adding 2ml dexamethasone (8mg) 3cc 0.9% NaCl to local anesthetic containing 10 ml of bupivacaine (0.5%) and 5cc of prilocaine (2%) will be included in Group I. Patients who underwent infraclavicular block by lateral sagittal method by adding 10 ml of Bupivacaine (0.5%) and 5ml of prilocaine (2%) and 5 cc of 0.9% NaCl will be included in Group II. ASA score of the patients, drugs used in surgery, name of surgery, age, weight, height, block time, surgery start and end time, pre-block vitals, post-block vitals, adverse effects, sensory and motor block scale, with 10-minute intervals after the block, after the operation. grades immediately after, 12 hours and 24 hours, VAS scoring at 12 and 24 hours after surgery, surgeon satisfaction will be recorded. In addition, morphine and other analgesic consumption will be checked in all patients in the first 24 hours after surgery.