There are about 4372 clinical studies being (or have been) conducted in Greece. 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.
Patients aged between 20 and 70 years, ASA physical status I-III, and scheduled for laparoscopic cholecystectomy under general anaesthesia will be enrolled in the study. Patients will be randomized to the preemptive group to receive an antiemetic regime 1h before the start of surgery or to the intraoperative group to receive the same antiemetic drugs in the same doses intraoperatively, 30 min before the end of surgery. In the operating room standard monitoring and a standardized anesthetic technique will be implemented in all patients. Nausea, vomiting, retching and PONV (cumulative) will be recorded at PACU, at 4h, 8h and 24h postoperatively. Pain scores assessed by NRS (numerical rating scale) will be recorded at the same time points. Also, when patients received fluids and solid food by mouth will be recorded.
The purpose of this study is to investigate the effects of N-acetyl Cystein (NAC) supplementation on redox status, physiological and biochemical parameters in G6PD deficient individuals after acute exercise.
To study the impact of providing specific verbal instructions in inpatients (and/or their relatives) undergoing colonoscopy on the quality of bowel preparation.
Early stress-dose steroids are of uncertain efficacy in cardiac arrest. The current authors plan to conduct a pertinent mediation analysis using prospectively collected data from 2 prior randomized clinical trials of in-hospital cardiac arrest. These trials reported positive results on the vasopressin-steroids-epinephrine (VSE) combination. The current analysis is aimed at identifying mediators of the benefit associated with VSE, potentially attributable to its stress-dose steroid subcomponent. Tested mediators will include arterial pressure in the early postresuscitation period (primary), and arterial blood lactate in the early postresuscitation period and renal failure free days (secondary).
The goals of our study are to determine a).the association between abnormal circadian BP and the development of paroxysmal AF in hypertensive patients, b).at which level of TOD, paroxysmal AF episodes are detected in hypertensive subjects, c).if there is any association between systolic and/or diastolic BP levels with AF occurrence, d).whether the mean heart rate during a 24-hr interval is associated with the development of paroxysmal AF, and finally e).examine the relationship between a wide PP and asymptomatic AF episodes in patients with HTN.
The purpose of this randomized controlled trial (RCT) is to compare a single injection of corifollitropin-alfa versus daily injections of follitropin beta regarding the number of oocytes retrieved, hormonal profile and follicle development in patients with high response undergoing ovarian stimulation for in vitro fertilization treatment using a gonadotropin-releasing hormone (GnRH) antagonist protocol combined with GnRH agonist trigger and cryopreservation of all embryos.
The study aims to compare the novel method of GnRH antagonist administration in the luteal phase versus conventional treatment in IVF patients who develop severe early ovarian hyperstimulation syndrome and have all their embryos cryopreserved.
Glioblastoma multiform (GBM) is the most common malignant primary brain tumor in adults. Despite maximal treatment tumor relapse occurs regularly accompanied by unfavourable prognosis. Among other reasons, it is believed that this could be in part due to the existence of the so-called tumor stem cells (TSCs), a cellular subfraction within GBM which escape therapy by being highly resistant to irradiation and chemotherapy and thus constituting the source of tumor recurrence. GBM, like many other cancers, show a sub-population of aldehyde dehydrogenase (ALDH) overexpressing TSCs. More specifically, ALDH1A1, a cytoplasmatic isoform of ALDH, proved to be a novel stem cell marker in human GBM. In addition, ALDH1A1 has been shown to be a mediator for resistance of GBM to temozolomide (TMZ) and a reliable predictor of clinical outcome; prognosis of patients with a high level of ALDH1A1 expression was poor compared with that of patients with low levels. Consequently, ALDH1A1 may serve as a potential target to improve treatment of human GBM through inhibition of the enzyme. Disulfiram (DSF) has been used for more than sixty years in the treatment of chronic alcoholism because of the unpleasant symptoms it provokes after ethanol intake. The underlying mechanism is believed to be the accumulation of acetaldehyde in the blood, due to inhibition of the liver ALDHs. Actually, DSF is a strong inhibitor of ALDH1A1 and relatively non-toxic at therapeutic (for chronic alcoholism) doses that can penetrate the blood-brain barrier. In addition, DSF has been shown to be cytotoxic on GBM stem-like cells, inhibiting the growth of TMZ resistant GBM cells and blocking self-renewal by ~100% , while it has been identified as an inhibitor of human GBM stem cells in high-throughput chemical screens. Interestingly, a number of these actions were copper-dependent. In the current Phase II clinical trial, DSF/copper combination will be tested as an adjunctive and concurrent chemotherapy in the treatment of newly diagnosed GBM. According to our hypothesis, initiation of DSF chemotherapy after the resection of the tumor and before the introduction of the standard radio-chemotherapy will inhibit ALDH1A1 of GBM TSCs making them more susceptible to radio-chemotherapy and possibly reducing the recurrence rate of GBM. On the other hand, the addition of copper will probably enhance the cytotoxic effects of DSF possibly through augmentation of its pro-apoptotic and proteasomal inhibitory actions.
The Left thoracic paravertebral block have a different effect on heart's autonomic nervous system, as measured with Heart Rate Variability, compared to Right interscalene block
Thoracic epidural anesthesia and analgesia for patients undergoing lung resection can reduce the occurrence of AF if it is continued for six postoperative days instead of just three.