Active clinical trials for "Pituitary Diseases"

The purpose of this study is to determine the effects on the heart of injecting local anaesthetic into the nose prior to surgery on the pituitary gland?

Context. The relevance of hyponatremia has been acknowledged by guidelines from the United States of America (2013) and Europe (2014). However, treatment recommendations differ due to limited evidence. Objective. In hyponatremia following pituitary surgery - caused by the syndrome of inappropriate antidiuretic hormone (SIADH) secretion - the investigators compared fluid restriction with the pharmacological increase of water excretion by blocking the vasopressin 2 receptors with tolvaptan at a low and moderate dose. Design. Prospective observational study. Setting. Neurosurgical Department of a University hospital with more 200 pituitary procedures per year. Patients. Participants undergoing surgery for sellar lesions and developing a serum sodium below 135 mmol/L. The diagnosis of SIADH was established by eu- or hypervolemia (daily measurement of body weight and fluid balance daily), an inappropriately concentrated urine (specific gravity) and exclusion of a cortico- and thyreotropic insufficiency. Intervention. Participants were treated with fluid restriction (n=38) or tolvaptan at 3.75 (n=38) or 7.5 mg (n=48) orally. Main Outcome Measures. Treatment efficacy was assessed by the duration of hyponatremia, sodium nadir and length of hospitalization. Safety was established by an increment serum sodium below 10 mmol/L per day and exclusion of side effects.

This is a prospective case-control study to compare the usefulness of 18F-FDG PET/MRI with that of 18F-FDG PET/CT in detection of functioning pituitary microadenomas.A single dose of 370 Mega-Becquerel (MBq) 18F-FDG will be injected intravenously.Visual and semiquantitative method will be used to assess the PET/MRI and PET/CT images.

Investigators hypothesized that propofol dose for pituitary somatotroph patients might differ from nonfunctioning pituitary tumor, and investigators will evaluate a target controlled infusion (TCI) effect site concentration (Ce) of propofol for BIS score of 40 and LOC (loss of consciousness) in pituitary somatotroph patients in comparison with non functioning pituitary tumor patients. On arrival in the operating room, standard monitoring devices, including electrocardiogram, pulse oximetry, noninvasive blood pressure cuff, and bispectral index (BIS) will be applied to the patients. Propofol with the modified Marsh pharmacokinetic parameters using a keo of 1.2/min will be administered through TCI pump (OrchestraBase Primea, Fresenius Vial, France). The initial target Ce of propofol will be chosen as 3.0 mg/mL (0.5 mg/mL of incremental size) based on an earlier study. The sedation of patients will be assessed with BIS score and the modified observer's assessment of awareness and sedation (OAA/S). LOC was defined as an OAA/S lower than 2 (loss of response to spoken command to eye opening and loss of response to mild prodding or shaking). The primary end point of this study is the Ce of propofol when the BIS score is 40. The secondary end point of this study is the Ce of propofol at LOC.

In patients with pituitary adenoma scheduled for endoscopic transsphenoidal pituitary surgery, it was aimed to compare the efficacy of postoperative pain relief of a selective α-2 agonist "Dexmedetomidine" and the rapid and short-acting opioid "Remifentanil" using the "Numerical Rating Scale" (NRS) administered alongside propofol in perioperative maintenance anesthesia. .

Approximately, post-traumatic stress disorder (PTSD) occurs in 8% of the adult population over time. Exposure to traumatic events increases the risk of poor physical health and often leads to disability. The biology of PTSD is continually being explored in order to help find better treatments for this debilitating disorder. In our study, we propose to further our understanding of PTSD. Prior research has found that patients with PTSD have changes in the stress hormone pathway. In this pathway, there is release of certain hormones from the pituitary gland in the brain that feed into the blood stream and tell the adrenal gland to produce stress hormones. The pituitary is a gland located at the base of the brain which controls the hormones in the body, including the stress hormones. Research in other psychiatric disorders has found changes in the pituitary volume along with changes in the hormones. This has not been investigated yet in PTSD. Therefore, we propose in our study to measure pituitary volume in people with PTSD and look at the changes in the stress hormone pathway. Moreover, we will investigate whether other hormones are affected by PTSD. In this way, we can further our understanding of the the biology of PTSD and help develop new therapies which can intervene through the hormonal system.

The investigators hypothesize that withholding hydrocortisone during the peri-operation in patients with pituitary adenomas whose hypothalamus pituitary adrenal axis are intact are safe.

A study to followup patients that have previously been treated for pituitary tumours with either photodynamic therapy or placebo in a previous trial. The study aims to determine whether photodynamic therapy has any long term effect on tumour size, visual fields or endocrinological function.

Non functioning pituitary adenomas (NFPAs) are the most common pituitary adenomas. Their growth is usually slow and diagnosis is often made in the context of masse effect .The therapeutic alternatives are surgery and radiotherapy such as fractionated stereotactic radiotherapy. Nowadays, there is no clinical or histological prognostic factor to allow an individualized follow-up and recurrence could happen 10 or 15 years after the first surgery. In this study, the investigators evaluate NFPAs recurrence rate after surgery and try to find predictive factors of recurrence to personalized the follow-up of each patient.

The purpose of the study is to evaluate the Calcium homeostasis in adult patients with uncontrolled acromegaly. The measurements will be repeated 3-6 months after the treatment of acromegaly (surgical or medical). The control group consists of patients with nonfunctioning pituitary tumors who will undergo surgical removal.