There are more than 498,563 clinical trials published worldwide with over 60,000 trials that are currently either recruiting or not yet recruiting. Use our filters on this page to find more information on current clinical trials or past clinical trials (free or paid) for study purposes and read about their results.
The induction of anaesthesia is one of the most critical situations for high-risk-patients undergoing interventions surgery. For several reasons, it is crucial to maintain adequate blood pressure and cardiac output during this phase. This retrospective cohort study aims to find out if the choice of the induction agent has a major impact on blood pressure and the use of catecholamines during the induction and the interventional procedure in patients undergoing interventional mitral valve repair.
Background: Frailty is increasing in prevalence internationally with population ageing. Frailty can be managed or even reversed through community-based interventions delivered by a multi-disciplinary team of professionals, but to varying degrees of effectiveness. However, many of the implementation insights of these care models are contextual, and may not be applicable in different cultural contexts. The Geriatric Service Hub (GSH) is a novel frailty care programme in Singapore, that includes key components of frailty care such as comprehensive geriatric assessments, care coordination and the assembly of a multidisciplinary team. The aim of this study is to gain insights on the factors influencing the implementation approaches adopted by five participating sites, and the effectiveness of the programme. Methods: We will adopt a mixed-methods approach that includes a qualitative evaluation among key stakeholders and participants taking part in the programme, through in depth-interviews and focus group discussions. The main topics covered includes factors that affected the development and implementation of each programme, operations and other contextual factors that influenced implementation outcomes. The quantitative evaluation (1) monitors each programme's care process through quality indicators, (2) a multiple-time point survey study to compare programme participants' pre- and post- outcomes on patient engagement (collaboRATE and 13-item Patient Activation Measure;PAM), healthcare experiences (Consumer Assessment of Healthcare Providers and System Clinician and Group Survey Version 3.0; CG-CAHPS), health status and quality of life (Barthel Index of Activities of Daily Living, fall counts, the EuroQol questionnaire and the Control, Autonomy, Self-realization and Pleasure scale; CASP-19), impact on caregivers (Zarit Burden Interview) and societal costs (Client Service Receipt Inventory). (3) A retrospective cohort design to assess healthcare and cost utilisation between participants of the programme and a propensity score matched comparator group. Discussion: The GSH sites share a common goal to increasing accessibility of essential services to frail older adults, and providing comprehensive care. The results of this evaluation study will provide valuable evidence to the impact and effectiveness of the GSH, and inform to the design of similar programmes targeting frail older adults.
Objective: To evaluate potential benefits of adding the active form of Coenzyme Q10 (Ubiquinol) to Clomiphene Citrate compared with Human Menopausal Gonadotropins (hMG) in Clomiphene Citrate resistant PCOS patients. Methods: 148 PCOS Patients with Clomiphene Citrate resistance were randomized into two groups (A and B). In group A, controlled ovarian stimulation was done by Clomiphene Citrate 150 mg daily (from 2nd till 6th day of cycle) together with Ubiquinol starting from 2nd day till day of hCG triggering in a dose of 100 mg orally once daily. In group B, hMG was given from 2nd day of the cycle in a dose ranging from 75 to 225 IU. Serial transvaginal ultrasonography was done starting on cycle day 8 and continued till size of leading follicle reaches 18 mm or more then ovulation triggering was done. Thereafter, patients were advised for a timed intercourse (TI) after 36 hours. A blood sample was withdrawn seven days after hCG triggering, for measurement of serum progesterone. If the Patient presented with a missed period for one week, a serum sample was sent for β-hCG.
The axons of the retinal ganglion cells combine to form the optic nerve. The optic nerve transmits electrical signals to the visual cortex by various synapses. Optic nerve axons are more sensitive to toxins than retina because they are outside the blood retinal barrier. Methanol, various solvents and heavy metals, carbon dioxide, antiarrhythmic, antiepileptic, antibiotics and some vasoactive drugs can cause toxic optic neuropathy. There is a different pathophysiology for each toxin. Methanol is easily accessible alcohol in all types of disinfectants. Methanol is converted into formaldehyde and formic acid while metabolized in the liver. Formaldehyde disrupts ATP synthesis by blocking mitochondrial function and oxidative phosphorylation. Formic acid causes demyelination as a result of metabolic acidosis. Neuroinflammation occurs when denatured proteins block axoplasmic flow. All these processes can lead to apoptosis and permanent vision loss. Sildenafil is a vasoactive drug used in erectile dysfunction. Sildenafil decreases optic nerve head blood flow. Neuroinflammation develops secondary to the cessation of axoplasmic flow after hypoxia. If hypoxia and neuroinflammatiom persists, apoptosis and permanent vision loss develop. Amiodarone is an ion channel blocker used in the treatment of cardiac arrhythmias. Long-term use may cause disruption of ion channel balance in the optic nerve. This condition leads to asymmetric neuroinflammation and apoptosis. Wharton's jelly derived mesenchymal stem cells (WJ-MSC) can increase mitochondrial ATP synthesis with paracrine effects and suppress neuroinflammation with immunomodulatory effects. Repetitive electromagnetic stimulation (rEMS) can rearrange ion channel balances and axoplasmic flow. The aim of this prospective phase-3 clinical study is to investigate the effect of WJ-MSC and rEMS combination in the therapy of toxic optic neuropathies. This combination is the first study in the literature for the therapy of toxic optic neuropathies.
Pectus excavatum (PE) and pectus carinatum (PC) are the most frequent chest wall deformities in humans. They are usually clinically recognized in early childhood or adolescence, with aggravation during the pubertal growth spurt. PE is a depression of the anterior chest wall, most frequently involving the lower sternum. In this study we use simultaneously compared chest CT, MRI, and 3D scanning fro both PE and PC assessment . The aim of this study is to compare a standard protocol using chest CT to a non-irradiant protocol with 3D scanning and MRI. The primary endpoint was to assess the inter observer concordance and the correlation between the HI (Haller Index) evaluated with MRI and the EHI (External Haller index) evaluated with 3D scanning. The secondary endpoints were to assess the concordance with chest CT the variation of the HI evaluated in inspiration and expiration with MRI and also the correction index (CI) between chest CT and MRI in the PE group, .
This study aims to compare the effects of the erector spinae plan block (ESP) and modified pectoral nerve block (PECS II) on postoperative analgesia in patients undergoing video- assisted thoracoscopic surgery (VATS).
This study investigated a previously unassessed operating position for ureteroscopic holmium laser lithotripsy in patients with upper ureteral stone. The reverse Trendelenburg position can reduce migration and improve the stone free rate (SFR). Moreover, less utilization of flexible ureteroscope and hospital stay in reverse Trendelenburg position can reduce the medical cost. Therefore, it can be safely used as an optional surgical method for the treatment of upper ureteral stones.
Background and study aims: Executive functions (EF) and social functions are important for self-regulation, problem solving, and attaining future goals yet they are impaired in Autism Spectrum Disorder (ASD). Physical exercise (PE) is found to enhance these central cognitive and social impairments in ASD. While limited research has begun to target these impairments in clinical samples, the presence of sub-clinical traits of ASD (refer to as broad autism phenotype (BAP)) in the general population is more common than the 1% prevalence of ASD. Therefore, it is crucial to study these impairments in the sub-clinical individuals. This study aims to investigate the effectiveness of PE in enhancing the EF and social functions in the BAP adolescents. Method: Participants will be recruited from the local community and they should be between the age of 7-20 years without any psychiatric disorders. Expected results: PE is predicted to be effective in reducing the EF and social impairments in these adolescents. Implications: These findings can inform us with the knowledge to design a community-based PE training targeting EF problems in these adolescents with BAP in the local context. Ultimately, this training can be incorporated to the curriculum of the primary and secondary schools targeting BAP and associated impairments in adolescents.
The aim of the current study was to evaluate and quantify the cephalometric changes produced by maxillary and mandibular extrusion arches in closure of anterior open bite in non-growing patients.
Studies of appetitive behavior in humans after RYGB have produced ambiguous results. It therefore remains unclear whether there are fundamental shifts in the palatability of high-fat and sugary foods after RYGB or simply a decrease in the appetitive drive to ingest them. Moreover, learning processes may play a role as changes in diet selection progress with time in rats after RYGB. However, direct measures of an altered food selection in humans after RYGB are rare and both the durability of the phenomenon as well as the role of experience for changes in food selection remain elusive.