Hypotension Clinical Trials

The goal of this study is to evaluate if a novel near-infrared spectroscopy (NIRS) device can accurately estimate blood pressure in newborns at risk for unstable blood pressure. The main questions it aims to answer are: * Can NIRS accurately estimate blood pressure when compared to the gold standard, arterial line blood pressure * Can NIRS accurately estimate blood pressure when compared to infants with cuff blood pressure monitoring Researchers will compare NIRS-based estimates to arterial line blood pressure readings and manual cuff measurements to optimize and validate the FlexNIRS device for neonates to accurately estimate blood pressure continuously and noninvasively. Participants will wear a small, noninvasive NIRS sensor on the forehead. Read Less

This is a prospective, randomized control trial comparing norepinephrine versus phenylephrine for vasopressor support in patients undergoing elective spinal fusion surgery. Read Less

This project will focus on a novel approach to stabilizing blood pressure (BP) during inpatient rehabilitation after acute SCI. After SCI, people have unstable blood pressure, ranging from too low (orthostatic hypotension) to too high (autonomic dysreflexia). Unstable BP often interferes with performing effective physical rehabilitation after SCI. A critical need exists for the identification of safe, practical and effective treatment options that stabilize BP after traumatic SCI. Transcutaneous Spinal Cord Stimulation (TSCS) has several advantages over pharmacological approaches: (1) does not exacerbate polypharmacy, (2) can be activated/deactivated rapidly, and (3) can be applied in synergy with physical exercise. The study team is asking the key question: "What if applying TSCS earlier after injury could prevent the development of BP instability?" To facilitate adoption of TSCS for widespread clinical use, the study team plans to map and develop a parameter configuration that will result in an easy to follow algorithm to maximize individual benefits, while minimizing the burden on healthcare professionals. This project will provide the foundational evidence to support the feasible and safe application of TSCS in the newly injured population, thereby overcoming barriers to engagement in prescribed inpatient rehabilitation regimens that are imposed by BP instability. Read Less

The purpose of this study is to identify the effects of non-pharmacological and pharmacological anti-hypotensive treatment interventions on orthostatic hemodynamic responses, symptoms of autonomic dysreflexia and orthostatic hypotension, and levels of fatigue and comfort in hypotensive individuals with SCI. Read Less

The Non-Invasive Cardiac Output Monitor (NICOM) is a non-invasive monitor capable of measuring cardiac output (CO) and cardiac index (CI), and stroke volume (SV) and stroke volume index (SVI) based on heart rate. Conceptually NICOM is a technology that utilizes a dynamic response characteristic in assessing the need for fluid administration, whereby SVI is measured before and after a fluid challenge with more fluid given only if SVI increases significantly with administered fluid. Dynamic response technologies are intended to replace older, "static" measures such as central venous pressure (CVP) and pulmonary capillary wedge pressures (PCWP) which are single point measurements utilized to assess the need to administer fluid. The aim is to pilot and evaluate the effectiveness of using The Non-Invasive Cardiac Output Monitor (NICOM) technology for goal-directed fluid resuscitation in adult inpatients with sepsis associated acute hypotension and/or evidence of septic shock (Lactate \>= 4.0). Read Less

The primary objective of this study is to evaluate the dose effect of Phenylephrine Hydrochloride Injection on the treatment of clinically relevant decreased blood pressure in the pediatric population, ≥12 to 16 year old patients undergoing general and neuraxial anesthesia. The secondary objectives are to describe changes in blood pressure and heart rate, time to onset and to maximal response, and the duration of response; to assess the safety of the product in this population; and to characterize the pharmacokinetics of phenylephrine hydrochloride. Read Less

This project will investigate the effect of spinal cord transcutaneous stimulation on blood pressure in individuals with a chronic spinal cord injury who experience blood pressure instability, specifically, orthostatic hypotension (a drop in blood pressure when moving from lying flat on your back to an upright position). The main questions it aims to answer are: 1. What are the various spinal sites and stimulation parameters that normalize and stabilize blood pressure during an orthostatic provocation (70 degrees tilt)? 2. Does training, i.e., exposure to repeated stimulation sessions, have an effect on blood pressure stability? Participants will undergo orthostatic tests (lying on a table that starts out flat, then tilts upward up to 70 degrees), with and without stimulation, and changes in their blood pressure will be evaluated. Read Less

The goal of this clinical trial is to evaluate the effect of transcutaneous spinal cord stimulation on blood pressure in individuals with an acute spinal cord injury (within 30 days of injury). Blood pressure instability, specifically orthostatic hypotension (a drop in blood pressure when moving lying flat on your back to an upright position), appears early after the injury and often significantly interferes with participation in the critical rehabilitation time period. The main questions it aims to answer are: 1. Can optimal spinal stimulation increase blood pressure and resolve orthostatic symptoms (such as dizziness and nausea) when individuals undergo an orthostatic provocation (a sit-up test)? Optimal stimulation and sham stimulation (which is similar to a placebo treatment) will be compared. 2. What are the various spinal sites and stimulation parameters that can be used to increase and stabilize blood pressure to the normal range of 110-120 mmHg? Participants will undergo orthostatic tests (lying on a bed that starts out flat and then moved into an upright seated position by raising the head of bed by 90° and dropping the base of the bed by 90° from the knee) with optimal and sham stimulation, and their blood pressure measurements will be evaluated and compared. Read Less