Active clinical trials for "Hypotension"

Geriatric patients who undergo general anesthesia experience post induction hypotension which is treated with intravenous fluids and ephedrine. The main cause of post-induction hypotension is the decrease in the sympathetic outflow causing arterial vasodilatation, a decrease in venous return and consequently the activation of the Bezold Jarish reflex (BJR) that elicits a triad of bradycardia, vasodilatation and further hypotension. BJR is elicited by activation of 5-HT3 receptors within the intracardiac vagal nerve endings. Glucocorticoids in general inhibit 5-HT3 expression and dexamethasone was found to decrease the level of 5-HT3 in the cerebral cortex and hippocampus in developing rats. So, the research team hypothesizes that dexamethasone can attenuate the postinduction hypotension in geriatric patients undergoing general anesthesia if administered preoperatively.

Fluid challenge is often carried out in critical ill patients. Its responsiveness usually requires invasive monitoring. To use non-invasive methods is very tempting. Investigators hypothesize that transcutaneous pO2,transcutaneous pCO2 and Central Venous SO2 variations provide feasible estimation on fluid responsiveness in critical ill patients.

Aim: The aim of the clinical trial is to study the accuracy of the TensorTip device compared with registered (FDA-approved) invasive and non-invasive devices. Hypothesis: Human physiological biomarkers may be measured from the color distribution of the internal or external (skin) tissue. The technology of the TensorTip finger-mounted device is based on the color distribution of the peripheral blood tissue, which enables the measurement of certain biomarkers and vital signs under consideration.

The aim of the project is to investigate whether the use of the HPI can reduce the number and duration of intra- and postoperative hypotension in ventilated patients during and two hours after extensive surgery in the head and neck area compared to the established monitoring.

This study looks to characterize autonomic nervous system dysfunction after spinal cord injury and identify the potential role that transcutaneous spinal cord stimulation may play at altering neuroregulation. The autonomic nervous system plays key parts in regulation of blood pressure, skin blood flow, and bladder health- all issues that individuals with spinal cord injury typically encounter complications. For both individuals with spinal cord injury and uninjured controls, experiments will utilize multiple parallel recordings to identify how the autonomic nervous system is able to inhibit and activate sympathetic signals. The investigators anticipate that those with autonomic dysfunction after spinal cord injury will exhibit abnormalities in these precise metrics. In both study populations, transcutaneous spinal cord stimulation will be added, testing previously advocated parameters to alter autonomic neuroregulation. In accomplishing this, the investigators hope to give important insights to how the autonomic nervous system works after spinal cord injury and if it's function can be improved utilizing neuromodulation.

The study aims to compare crystalloid co-loading and colloid co-loading in parturients receiving prophylactic phenylephrine infusion during cesarean delivery in terms of the incidence of hypotension.

General anesthesia organizes the best option for controlled blood pressure during rhinoplasty surgery. The primary agent applied in controlling hypotension should have particular unique characteristics. The dexmedetomidine central and peripheral sympatholytic performance is usually indicated by low blood pressure and low heart rate. magnesium sulfate is among the best agents used.

This study will be conducted on 40 healthy women having spinal anesthesia for elective cesarean delivery in the operating rooms at Menoufia university hospital.

Continuous pulse oximetry monitoring is the standard of care in critically ill patients in emergency departments, operating rooms and intensive care units. In patients with poor peripheral perfusion (low blood flow) due to peripheral vascular disease, low body temperature, or shock and the use of medications to raise the blood pressure, clinicians have difficulty obtaining an accurate measurement. This study compares the accuracy of forehead oximetry sensors to nasal alar sensors to lab oximetry measures and on the rate of device related pressure ulcers with both.

Rationale and objectives Patients on On Line Hemodiafiltration (OL- HDF) are more stable hemodynamically with less Intra Dialytic Hypotension (IDH) episodes compared to conventional hemodialysis (HD). The investigator will follow the hemodynamic parameters during the dialysis sessions (HD and OL-HDF) by using the new non invasive technology, the NICAS device. By switching each patient with IDH from HD to OL- HDF, the investigators will evaluate the hemodynamic parameters and compare the two renal replacement treatment modalities, and prove the superiority of OL-HDF over HD regarding the hemodynamic measures.