Restoring Hemodynamic Stability Using Targeted Epidural Spinal Stimulation Following Spinal Cord Injury
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 8
- 试验地点
- 1
- 主要终点
- Occurrence of Adverse Events and Serious Adverse Events that are deemed related or possibly related to the study procedure or to the study investigational system, from implant surgery until the end of study
研究概览
简要总结
The purpose of this study is to stimulate the circuits in the spinal cord that are directly responsible for hemodynamic control to restore hemodynamic stability in participants with chronic cervical or high-thoracic spinal cord injury. The ultimate objective of this study is to provide preliminary safety and efficacy measures on the ability of the hemodynamic Targeted Epidural Spinal Stimulation (TESS) to ensure the long-term management of hemodynamic instability and reduce the incidence and severity of orthostatic hypotension and autonomic dysreflexia episodes in individuals with chronic cervical or high-thoracic spinal cord injury. In addition, the long-term safety and efficacy of TESS on cardiovascular health, respiratory function, and quality of life in participants with chronic spinal cord injury will be evaluated.
详细描述
Clinical management of chronic hemodynamic instability is currently limited to long-acting pressor agents and anti-hypertensives. These drugs have significant limitations as they require roughly one hour to become active and exert prolonged influences on the cardiovascular system. This slow timescale contrasts with the hemodynamic instability experienced by people with spinal cord injury, which occurs most commonly over just a few minutes, and tends to cease abruptly. This study will investigate a new therapy for managing hemodynamic instability in individuals with spinal cord injury: Targeted Epidural Spinal Stimulation (TESS).
Here, the investigators propose to stimulate the circuits in the spinal cord that are directly responsible for hemodynamic control to restore hemodynamic stability in participants with chronic cervical or high-thoracic spinal cord injury. The ultimate objective of this feasibility study is to provide preliminary safety and efficacy measures on the ability of the hemodynamic TESS to ensure the long-term management of hemodynamic instability and reduce the incidence and severity of orthostatic hypotension and autonomic dysreflexia episodes in humans with chronic cervical or high-thoracic spinal cord injury. In addition, the investigators aim to evaluate the long-term safety and efficacy of TESS on cardiovascular health, respiratory function, spasticity, trunk stability, sleep and quality of life in participants with chronic spinal cord injury.
The HEMO Trial will implant 4 participants with chronic (>12 months) spinal cord injury located between C3 and T6 who have confirmed severe orthostatic hypotension and autonomic dysreflexia. Enrolled participants will undergo baseline assessments, after which they will be implanted with the investigational system. Participants will then proceed to one month of an intensive device configuration protocol to configure the TESS settings of their investigational device to regain hemodynamic stability. After the intensive device configuration phase, daily supervised at-home hemodynamic TESS will be conducted for two weeks. Thereafter, and up to 25 weeks post-implant, participants will conduct supported at-home sessions as well as regular laboratory visits during a long-term at-home hemodynamic TESS phase. Finally, participants will undergo additional testing during a configuration of additional TESS programs phase. During this phase TESS configurations for hemodynamic stability, respiratory function, trunk stability and spasticity will be tested. Several clinical evaluations are planned to evaluate participants' hemodynamic and neurological status, cardiovascular functional status, respiratory function, trunk stability, and quality of life.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age 18 to 70 years old
- •Able to undergo the informed consent/assent process
- •Radiologically confirmed spinal cord injury
- •Spinal cord injury between C3 and T6
- •Classified with American Spinal Injury Association Impairment Scale (AIS) A or B Spinal cord injury
- •Stable medical, physical and psychological condition as considered by Investigators
- •Greater than 1 year since initial injury and at least 6 months from any required spinal instrumentation
- •Confirmed orthostatic hypotension and autonomic dysreflexia
- •Willing to attend all scheduled appointments
排除标准
- •Diseases and conditions that would increase the morbidity and mortality of spinal cord injury surgery
- •The inability to withhold antiplatelet/anticoagulation agents perioperatively
- •History of myocardial infarction or cerebrovascular event
- •Other conditions that would make the subject unable to participate in testing in the judgment of the investigators
- •Current and anticipated need for opioid pain medications or pain that would prevent full participation in the trial in the judgement of the investigators
- •Current clinical diagnosis of mental illness
- •Clinically significant cognitive impairment
- •Current substance or alcohol abuse
- •Botulinum toxin injections in the previous 6 months
- •Presence of significant pressure ulcers
- •Recurrent urinary tract infection refractory to antibiotics
- •Current pregnancy
- •Current breast feeding
- •Unhealed spinal fractures
- •Presence of indwelling baclofen or insulin pump
研究组 & 干预措施
Targeted Epidural Spinal Stimulation
Participants will undergo surgery to implant devices that will be used for Targeted Epidural Spinal Stimulation (TESS).
干预措施: Targeted Epidural Spinal Stimulation (Device)
结局指标
主要结局
Occurrence of Adverse Events and Serious Adverse Events that are deemed related or possibly related to the study procedure or to the study investigational system, from implant surgery until the end of study
时间窗: From implant surgery through study completion, an average of 7 months
Investigate the preliminary safety of hemodynamic targeted epidural spinal stimulation (TESS) to modulate pressor responses and manage blood pressure instability in participants with chronic SCI located between C3 and T6 and who suffer from severe orthostatic hypotension.
次要结局
- Echocardiogram (Ejection Fraction)(At baseline and during the testing phase, an average of 9 months)
- Orthostatic head-up tilt test(At baseline and during the testing phase, an average of 9 months)
- Daily stimulation log(From implant surgery through study completion, an average of 7 months)
- Echocardiogram (Strain)(At baseline and during the testing phase, an average of 9 months)
- Autonomic Dysfunction Following Spinal Cord Injury (ADFSCI) Questionnaire(At baseline and during the testing phase, an average of 9 months)
- Quality of life questionnaire (WHOQOL-BREF)(At baseline and during the testing phase, an average of 9 months)
- Respiratory function evaluation (Volume)(At baseline and during the testing phase, an average of 9 months)
- Vascular ultrasound(At baseline and during the testing phase, an average of 9 months)
- International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI)(At baseline and during the testing phase, an average of 9 months)
- Respiratory function evaluation (Flow)(At baseline and during the testing phase, an average of 9 months)
研究者
Aaron Phillips
Assistant Professor
University of Calgary