Active clinical trials for "Hypotension"

The aim of the present study is to quantify the dose and usage of sympathomimetics used in caesarean section.

To investigate biomarker reflects systemic or specific organ perfusion well, we are going to the observational comparison study using several hemodynamic monitoring methods in the premature infants. It includes near-infrared spectroscopy (NIRS), pulse oximetry with perfusion index (PI) and pleth variability index (PVI) and functional echocardiography.

Specific aim 1: The specific aim of this study is to compare cardiac output measurements as well as cardiac index, and stroke volume obtained via thermodilution during a cardiac catheterization with data obtained by the ClearSight cardiac output monitoring system. Specific aim 2: To compare arterial blood pressure measurements obtained by arterial line with arterial waveform measurements obtained by the ClearSight System. The hypothesis is: Cardiac output measurements or arterial blood pressure measurements taken non-invasively with the ClearSight system in pediatric patients who are either undergoing cardiac catheterization or have an arterial line will correlate with cardiac output measurements taken by pulmonary artery catheter thermodilution or arterial pressures measured by an arterial line.

Patients with acute hip fractures are old and vulnerable. With a majoriry classified as being ASA 3 or more. Frequently they receive spinal anesthesia perioperatively inducing hypotension. Even a short hypotensive period may induce postop cardiac T roponinT leakage as well as renal failure noted by Changes in Serum Creatinin or Cýstatin C This will be investigated and correlated to intraoperative hypotension as step one. Preliminary this will be followed by an intervention with vasopressor treatment perioperatively to preserve an adequte MABP

The hypothesis is that plethysmography variability index can predict the occurrence of hypotension after spinal anesthesia for cesarean delivery

The automated inflatable abdominal binder is an investigational device for the treatment of orthostatic hypotension (low blood pressure on standing) in autonomic failure patients. The purpose of this study is to evaluate the performance of the binder in detecting body posture during different types of human motion patterns and activities of daily living, and to develop new (and better) ways to detect upright posture. In particular, the investigators want to determine if activities of daily living, normally encountered by patients (lying down, sitting, standing, walking, and climbing up and down steps), interfere with the detection of upright posture used to trigger the device. Studies will be conducted in healthy subjects because the main purpose of this study is to evaluate posture detection rather than treating orthostatic hypotension.

Background Symptomatic undifferentiated hypotension represents a negative prognostic factor and the strongest predictor of in-hospital mortality. Misdiagnosis may lead to delayed or incorrect treatment of some life-threatening conditions. Aim - The aim of the study is to evaluate the feasibility and accuracy of a new bedside ultrasound method that consists in the focused imaging of the thorax, abdomen and leg veins, in emergency. Methods Hypotensive (<100 mm/Hg) patients presenting to our emergency department, complaining of at least one of the neurologic, respiratory and cutaneous signs and symptoms of inadequate tissue perfusion, are prospectively studied by ultrasound-focused assessment of the heart, lungs, inferior vena cava, peritoneum, aorta and leg deep veins. On the basis of physical examination and ultrasound results, the operator declares the diagnostic hypothesis without influencing the attending physician and the following diagnostic procedure (which includes ultrasound, when needed). The diagnostic hypothesis is compared with the final diagnosis, obtained after the hospital route and discussed by a panel of three blinded experts (one radiologist, one cardiologist and one emergency physician). The statistical agreement is calculated by the k of Cohen with p-value, confidence intervals and raw agreement (Ra).

Spinal anesthesia is the technique of choice for planned cesarean section. It is associated with a high frequency of maternal hypotension. Hyperactivity of the sympathetic system assessed with the LF/HF ratio (heart rate variability analysis) predicts the severity of maternal hypotension after spinal anesthesia. Increased LF/HF ratio may be explained by maternal stress that can be measured with salivary amylase. The goal of this study is to assess the relationship between salivary amylase and severity of maternal hypotension after spinal anesthesia for planned cesarean section.

To determine if proprietary software that uses pulse-wave analysis to interpret the output of a conventional pulse-oximeter, can predict the onset of circulatory stress, before changes in blood pressure and pulse occur, in patients undergoing outpatient hemodialysis.

Reduction in time to detection of Clinically Significant events Reduction of time to Intervention during Clinically Significant events Reduction in the number of admissions to Intensive Care