View clinical trials related to Hyperemia.
Filter by:Epidemiological studies based on Danish registries have observed that Danish male firefighters have more cardiovascular disease, infertility diagnose and a trend to increased risk of cancer than other Danish employed males. Firefighting activities include a combination of stressors such as strenuous work under heat, smoke and soot known to be able to affect cardiovascular and reproductive health, with smoke and soot also being known to increase the risk of cancer. The training facilities of real-fire extinguishing exercises in Denmark operate using wood or natural gas fire, which will have differential gradients of smoke, soot and possibly heat. The investigators will use different training conditions to create gradients of the different stressors and investigate health effects thereof. With this approach, the investigators expect to be able to evaluate the individual contribution of the different stressors in markers of cardiovascular, cancer and reproductive health risk. The project will include approx. 35 young conscript participants on a firefighting course, followed in four sessions, three firefighting training sessions under different fire conditions (no fire, wood fire and gas fire) and one control scenario.
To test the hypothesis that home-based leg heat therapy improves functional capacity, vascular function, and exercise hyperemia in older adults.
The purpose of this research study is to measure rate of decline and pattern of tissue oxygenation using the device, ViOptix T.Ox. ViOptix probes will be secured to the arm and hand. The recording process on the ViOptix machine will begin and obtain baseline StO2 levels for 5 minutes. After 5 minutes, a blood pressure cuff will be inflated on one arm. This blood pressure cuff will be left inflated for 10-20 minutes. Every 2 minutes a pulse check or doppler exam will be performed at your wrist. Last, the cuff will be deflated and the you will be free to leave the study room.
This study evaluates a new diagnostic approach based on intracoronary electrocardiogram (icECG) ST-segment shift remission time, denoted as τ-icECG (τ=tau, i.e., the remission half-time fitted by an exponential function to the disappearing ST-segment shift), to be used for PCI guidance.
Phase I Study to evaluate safety and tolerability of PRO-185 (naphazoline/hypromellose) ophthalmic solution through evaluation of vital signs, ocular signs such as intraocular pressure, hyperemia and mydriasis and adverse events.
The investigators aimed to identify the value of concordance between the diastolic hyperemia-free ratio (DFR) and fractional flow reserve (FFR) during pre-interventional and post-interventional period using a 0.014" COMET II Pressure Guidewire
Aims: to evaluate the success rate of radial artery cannulation in patients undergoing cardiac catheterization, using different methods such as palpation, hyperemia or ultrasound-guided puncture, together or each method separately. Specifically, the success rate at the first attempt, the number of attempts with each technique and the time spent will be assessed. The hypothesis is that there are different success rates for each puncture technique when cannulating radial artery for cardiac catheterization. Methods: randomized clinical trial with four parallel groups, with operator blinding. Those patients who will have the radial artery cannulated for an interventional cardiology procedure will be selected. Once the participant agrees to be included in the study and signs the informed consent, they are randomized to one of four groups: ultrasound and hyperemia puncture, only ultrasound puncture, only hyperemia puncture, palpation puncture (control group). Subsequently, an ultrasound assessment of the participant's radial artery (diameter, depth and systolic peak velocity) will be performed. Once in the intervention room, the puncture will be performed according to the corresponding method. The puncturing operator in charge will not perform the randomization or the ultrasound assessment to avoid bias. Variables will be collected in an ad hoc questionnaire designed to respond all study aims. Regarding the sample size, accepting an alpha risk of 0.05 and a beta risk of 0.2 in a bilateral contrast, 92 subjects per group are required to detect significant differences. Therefore, the total sample size would be made up of 368 participants, estimating losses of 5%. For variables description and hypotheses contrast, the statistical program SPSS version 22.0 for Windows will be used, working with a significance level of 5%.
Renal autotransplantation (RAT) is a method of removing a kidney from its place of origin in a patient, repairing it, and transplanting it in another location of the body, generally the iliac fossa of the same patient.RAT is a relatively new technique; the first ever RAT procedure in the US was performed in 1963. Advances in preservation and transplantation techniques have made RAT a modality that can be utilized in complex renal diseases. RAT is indicated for conditions such as renal vascular disease, nutcracker syndrome, pelvic venous congestion, pelvic trauma, refractory stone disease and, in some cases, loin pain hematuria syndrome and conventionally unresectable renal tumors. Irrespective of the excellent outcomes shown by RAT, the conventional open approach requires a large midline xiphoid-to-pubis or flank incision for donor nephrectomy with a second pelvic incision for renal transplantation into the iliac fossa.The current gold standard approach to RAT is a laparoscopic nephrectomy followed by open auto-transplantation. However, this approach still requires a large pelvic incision. Robotic technology enables us to perform more complex minimally invasive surgery. Gordon et al. performed and reported the first completely intracorporeal robotic RAT to repair a ureteral injury in 2014.
A total of 36 volunteers of postpartum women within 7 days with significant breast engorgement, will be recruited in China Medical University Hospital, Taichung, Taiwan. The participants will be randomly assigned into 3 groups, each of 12 people, namely, routine care group, routine care plus electrical-acupuncture experiment group, and routine care plus transcutaneous electrical nerve stimulation group.
Fluid expansion in critically ill patients following high risk surgery may induce fluid overload and worse outcome. Several tools have been developped to predict fluid responsiveness in such situation in order to avoid inappropriate fluid administration but with several limitations. Inferior vena cava (IVC) distensibility is one of those tools which has the advantage to be non-invasive, dynamic and safe, is usually measured by subcostal (SC)approach. In post surgical setting this acess is limited du to practical reasons (scar, dressing...), therefore a transhepatic (TH) approach is used but has not been validated as a fluid responsiveness prediction tool. The correlation between SC approach with the TH approach vary according to studies. Therefore the performances, the threshold identified for SC approach can not be translated to the TH approach. Further, fluid congestion status measured before IVC analyses, may be a useful confounder and safety endpoint for fluid responsiveness interpretation. The primary objective of this study is therefore to study the performance of the IVC measured using TH approach (IVCth) in predicting of fluid responsiveness defined as an increased of 10% and over of stroke volume. Secondary objectives intend to analyse the correlation between TH and SC approaches, to compared their performances for fluid responsiveness prediction, and to analyse the weight of venous congestion on fluid responsiveness prediction.