View clinical trials related to Near-infrared Spectroscopy.
Filter by:Thyroidectomy operations have traditionally been performed as open surgery. However, the scarring that occurs in the patient leads to cosmetic problems, especially in young women. Today, as a result of the development of minimally invasive surgical techniques, the number of natural orifice transluminal endoscopic surgeries (NOTES) is increasing. Surgical scars are avoided by using natural pathways such as the mouth, urethra, vagina or anus. Transoral endoscopic thyroidectomy (TOETVA) with vestibular approach, a form of NOTES, was first performed in 2011. In this method, the operation is performed through three ports entered near the gingiva-buccal sulcus. TOETVA surgeries are performed with an insufflation pressure of 6 mmHg in the neck region. No studies are examining the effects of this pressure on the blood vessels in the neck region on the blood supply to the brain tissue. Therefore, the investigators aim to compare cases operated using open thyroidectomy or TOETVA method by measuring cerebral regional tissue saturation.
Music has been consistently shown magic power in brain plasticity. Several study proved music can influence electronic activity of preterm infants' brain, while none study covered region oxygen metabolic. The investigators aim to discover the effects of music therapy on near-infrared spectroscopy and electroencephalogram in premature infants.
The 'Long-term Follow-up Near-infrared Spectroscopy and Intravascular Ultrasound Imaging of Internal Carotid Artery Stenosis Treated With Stenting' trial is an academic research project. It follows already published results of a research on carotid plaque composition in patients undergoing carotid stenting. Patients who were treated with carotid stenting will be invited to participate on the trial. The written informed consent will be needed. The participants will undergo carotid angiography, intravascular near-infrared spectroscopy and intravascular ultrasound of the extracranial portion of the internal and common carotid artery with implanted stent. The aim of the trial is to describe long-term change of the luminal and stent dimensions, vessel wall remodeling and plaque composition after carotid stenting. The findings will help to understand the long-term effect of carotid stenting on the carotid stenosis and mechanisms of plaque stabilization - sealing with stent.
The first major intervention a newborn infant is facing following birth is clamping of the umbilical cord. This means separation of the infant from the placenta, the newborn becomes an independent individual, especially from a cardio-circulatory perspective. There is still a lack of understanding of the issues associated with umbilical cord clamping. The aim of the present study is to investigate whether cord clamping after onset of sufficient spontenous breathing is able to improve systemic and cerebral oxygenation in term infants delivered vaginally.
Regional tissue oxygenation (rStO2) can be monitored by near infrared spectroscopy. The commercial devices FORE-SIGHT (CASMED) and INVOS (COVIDIEN) will be used simultaneously to test for their relative sensitivity for low oxygen levels just after birth on term infants born by elective cesarean section. Reproducibility will be examined by replacements of the sensors six times the next day when the infant is stable and quiet. Neonatal sensors will be used.
A comparison of three different devices using near infrared spectroscopy to measure the regional oxygenation. Both absolute values, reproducibility of measurements and sensitivity to changes will be estimated. The study hypothesis is that NONIN EQUANOX 7600 with sensor Model 8004CA, INVOS 5100c with sensor SAFB-SM and FORE-SIGHT with medium sensor have similar characteristics.
Regional tissue oxygenation (rStO2) can be monitored by near-infrared spectroscopy. The investigators planned a SafeBoosC phase II trial to test if a reduction of the burden of hyper- and hypoxia can be accomplished during the first three days of life in infants born before 28 completed weeks of gestation. The investigators developed a treatment guideline and a randomised trial design to evaluate if cerebral rStO2 spent out of range in %hours can be reduced by 50%. The present trial is a non-randomised pilot study of the intervention in 10 infants.
Observational comparison study of three commercially available regional oxygen saturation devices on a wide range of skin colors.