24 Clinical Trials for Various Conditions
This study will address the utility of ultrasound in the placement of an epidural catheter in severely obese parturients. Identification of midline can often be difficult using the standard method of palpation in obese patients. The Investigator will determine if the use of ultrasound decreases the amount of time and number of attempts required to place the epidural.
Although the current standard for lumbar puncture and spinal anesthesia is the use of manual palpation of surface landmarks to identify the correct interspace, performance of the procedure at too high of a level may increase the incidence of adverse effects. The current study will evaluate the efficacy of ultrasound in identifying the correct intervertebral space for lumbar puncture thereby improving the safety of the procedure.
The purpose of this study is to evaluate the impact of lumbar ultrasound anatomic mapping using the Accuro device on the number of needle redirections, when performing spinal anesthesia in the lateral decubitus position on patients undergoing elective cesarean delivery.
Our goal was to compare the number of attempts to perform spinal anesthesia using real-time ultrasound guidance versus landmark technique in patients meeting predefined criteria for difficult spinal anesthesia.
Patients with traumatic spinal cord injury (tSCI) often suffer from spinal cord swelling inside the thecal sac, which contains the spinal cord and surrounding fluid, leading to increased pressure on the spinal cord tissue and decreased spinal cord blood flow at the site of injury. The combination of increased pressure and decreased blood flow causes vascular hypoperfusion of the spinal cord and exacerbates the severity of injury. This is also referred to as secondary injury. Thus, knowledge of spinal cord hypoperfusion would allow the treating physician to optimize the hemodynamic condition of the patient with acute spinal cord injury and potentially improve functional outcomes.
The investigators propose this study to test the hypotheses that inferior vena cava (IVC) diameter can predict hypotension after labor analgesia (epidural, combined spinal-epidural) and neuraxial anesthesia for cesarean section (epidural, combined spinal-epidural and spinal block) in full-term pregnant patients.
The goal of this study is to enroll and randomize 99 participants with non-specific low back pain into a multimodal strategy of treatment consisting of a combination of dry needling (DN) and spinal manipulation therapy (SMT), DN only, and SMT only, followed by an at home exercise program. All groups will receive their respective treatment twice a week for 2 weeks followed by a 2-week home exercise program. Primary outcomes include clinical subjective (Oswestry Disability Index, numeric pain intensity rating) and mechanistic (lumbar multifidus, erector spinae, and gluteus medius muscle activation) measures assessed at baseline, 1, 2, and 4 weeks. Timepoints at 2-weeks and 4-weeks will be compared to baseline measures to determine effectiveness of the combination group against the other single treatment groups. Exercise compliance will be measured by participants self-reporting adherence to the program by selecting average number of days per week the exercises are completed.
Spinal cord injury following posterior decompression in patients suffering from chronic, cervicothoracic spinal cord compression is a known complication with multiple etiologies. Currently, intraoperative neuromonitoring (IONM) remains the gold standard for predicting and preventing post-operative deficits from these procedures. However, there is a paucity in the field of spine surgery for further, non-invasive biomarkers that can help detect and prognosticate the degree of spinal cord injury intraoperatively. Contrast enhanced ultrasound (CEUS) is a radiation free imaging modality that utilizes nanobubble technology to allow for visualization of the macro- and microvascular architecture of soft tissue structures. Despite being currently approved for the use in hepatology and cardiology, it has remained absent from the field of spinal cord injury. The study team aims to evaluate and quantify micro- and macrovascular changes that lead to areas of hyper-perfusion as well as areas of ischemia intraoperatively in patients that undergo elective cervicothoracic posterior decompression for chronic compression. In addition, the study team aims to assess the efficacy of CEUS in detecting microvascular changes that correlate with IONM changes and predicting degree and recovery of post-operative neurologic deficits from intraoperative spinal cord injury. The study team hypothesizes that following decompression, subjects will have detectable levels of microvascular changes causing areas of hypoperfusion and reperfusion injury. Second, the study team hypothesizes that these perfusion changes will correlate with intraoperative neuromonitoring changes and can predict and prognosticate the degree of post-operative neurologic injury.
This study will focus on the pathophysiological underpinnings of reduced exercise capacity and fatigue in ambulatory patients with spinal muscular atrophy (SMA). There has been laboratory evidence to suggest that the molecular mechanisms underlying mitochondrial biogenesis may be vulnerable to survival motor neuron (SMN) protein deficiency. This is an observational, single visit study including 34 ambulatory SMA patients treated with SMN repletion therapies (risdiplam or nusinersen) for at least 6 months at enrollment.
Robotic therapies aim to improve limb function in individuals with neurological injury. Modulation of robotic assistance in many of these therapies is achieved by measuring the extant volitional strength of limb muscles. However, current sensing techniques, such as electromyography, are often unable to correctly measure the voluntary strength of a targeted muscle. The difficulty is due to their inability to remove ambiguity caused by interference from activities of neighboring muscles. These discrepancies in the measurement can cause the robot to provide inadequate assistance or over-assistance. Improper robotic assistance slows function recovery, and can potentially lead to falls during robot-assisted walking. An ultrasound imaging approach is an alternative voluntary strength detection methodology, which can allow direct visualization and measurement of muscle contraction activities. The aim is to formulate an electromyography-ultrasound imaging-based technique to sense residual voluntary strength in ankle muscles for individuals with neuromuscular disorders. The estimated voluntary strength will be involved in the advanced controller's design of robotic rehabilitative devices, including powered ankle exoskeleton and functional electrical stimulation system. It is hypothesized that the ankle joint voluntary strength will be estimated more accurately by using the proposed electromyography-ultrasound imaging-based technique. And this will help the robotic rehabilitative devices achieve a more adaptive and efficient assistance control, and maximize the ankle joint rehabilitation training benefits.
Rotator cuff disease (i.e., rotator cuff tendinopathy or tear) is a common cause of shoulder pain in persons with chronic spinal cord injury (SCI). It usually resolves with non-operative treatments such as pharmacological agents and physical therapy; however, when this fails, rotator cuff surgery may be the only option. Corticosteroid injections are another alternative to provide temporary relief, but can over time accelerate degeneration of the tendon and lead to further damage. Autologous adipose tissue injection has recently emerged as a promising new treatment for joint pain and soft tissue injury. Adipose can be used to provide cushioning and filling of structural defects and has been shown to have an abundance of bioactive elements and regenerative perivascular cells (pericytes). The purpose of this study is to explore the efficacy of autologous, micro-fragmented adipose tissue (Lipogems®) injection under ultrasound guidance for chronic shoulder pain in persons with SCI compared with the standard-of-care, corticosteroid injection.
Patients with traumatic spinal cord injury (tSCI) often suffer from spinal cord swelling inside the thecal sac, which contains the spinal cord and surrounding fluid, leading to increased pressure on the spinal cord tissue and decreased spinal cord blood flow at the site of injury. The combination of increased pressure and decreased blood flow causes vascular hypo-perfusion of the spinal cord and exacerbates the severity of the injury. This is also referred to as secondary injury. Thus, knowledge of spinal cord hypo-perfusion would allow the treating physician to optimize the hemodynamic condition of patients with acute spinal cord injury and potentially improve functional outcomes. The investigators plan to use contrast-enhanced ultrasound (CEUS) to determine the decrease of blood flow in the spinal cord at the site of injury, during the routine surgery that these patients require to decompress and stabilize their injured spine. This may help the investigators to determine the efficacy of certain treatments in improving blood flow and patients suffering from tSCI.
We hypothesize that the Rivanna Accuro or similar U/S device would reduce time to success of identifying epidural and/or intrathecal spaces as compared to conventional palpation method.
Although the lumbar puncture is a common procedure and has been performed without ultrasound for decades, other research studies suggest that there may be some benefits to using ultrasound. This study intends to see whether by using ultrasound there is increased success rate, decreased need for additional procedures, and less discomfort during the procedure.
Neuropathic pain is often a result of direct diseases of peripheral or central nervous system with an estimated prevalence of 8% of adults and this pain is associated with significant consequences because of longer symptom duration and severity than many of the other pain syndromes. Functional brain imaging has revealed that many regions of the brain are engaged by painful events, but specific areas such as the thalamus have been markedly implicated. The purpose of this study is to determine the feasibility and safety of MRI-guided focused ultrasound treatment using the ExAblate Transcranial System in patients suffering from Neuropathic pain. This treatment modality offers non-invasive precise treatment potential for these patients.
Clinicians are often unable to successfully do a spinal tap. Ultrasound has been proposed as a method to improve success but it is not known if it helps. This study is designed to see if ultrasound improves the success rate.
The aim of this prospective observational study is to assess whether transesophageal echocardiography (TEE) can be used to identify the structures within the vertebral foramen of the spinal column and to determine the range of spinal segments which can be visualized.
The purpose of this study is to determine if performing an ultrasound to identify the space to insert the needle before performing a lumbar puncture will improve success of the procedure and patient safety.
Shoulder pain is very common in people with spinal cord injury (SCI). Persons with high-level paraplegia have higher chances to suffer shoulder pain and injury than those with lower-level paraplegia due to the shoulder muscle imbalance. As people with SCI overuse the shoulder during routine daily activities, the onset of pain or injury lead to increased healthcare expenses, limitation in activity, depression, decreased participation, and reduced quality of life. One of the main reasons of shoulder pain is believed to have a altered scapular movement. To clarify the mechanism of the shoulder pain and injury, comprehensive understanding of three-dimensional scapular kinematics is required. Ultrasound is a low-cost and non-invasive imaging system and has been used to diagnose the shoulder pain and injury in individuals with SCI. A freehand ultrasound (FUS) combining ultrasound with motion capture system to evaluate scapular movement was developed and presented favorable results in able-bodied population. The purpose of this study is to compare the FUS and widely used skin-based method against a radiographic based gold standard in people with paraplegia, and to elucidate the relationship among scapular movement and shoulder pain, pathology. This study will also allow us to gain more understanding of how level of injury influences the scapular behavior during functional activities. The investigators believe more severe shoulder pain and pathology will be associated with greater abnormal scapular movement. The investigators also believe that people with high-level paraplegia will have greater scapular abnormality than people with low-level paraplegia during arm elevation and weight relief raise tasks. By completing this study, the investigators will expect to deliver a reliable and valid tool to evaluate scapular movement and gain a better understanding how the altered scapular movement is related to shoulder pain and pathology. The investigators will also learn how the level of injury affects the scapular behavior during functional activities. The results of this study may help the shoulder pain management leading to the improvement in the quality of life of individuals with SCI.
The reported rate of unsuccessful spinal taps in children, especially young infants, is high. Our hypothesis is that ultrasound assistance can improve the success rate of spinal taps.
The investigators are interested in determining the utility of ultrasound of the spine for labor epidurals or spinal anesthesia for women in labor or having a cesarean delivery. The investigators hypothesized that in women with poor spinal landmarks that the use of ultrasound of the spine will improve the process of placing labor epidurals or spinal anesthetics
This is a data base building project on the use of pre-procedure ultrasound for the performance of labor epidural pain relief and spinal anesthesia for cesarean deliveries. Data collection includes ultrasound measured depth, actual needle depth, angle of ultrasound probe, actual needle angle, success rates, patient height and weight, number of attempts needed to place the epidural needle or spinal needle. Currently we are looking at the agreement between ultrasound determined depth of the epidural space or intrathecal space with actual needle depth.
The central objective of this study is to validate new algorithms that coordinate between functional electrical stimulation (FES) and the exoskeleton during sitting-to-standing, walking, and standing-to-sitting movements. The secondary objective is to optimize the algorithms as well as assess their ability to reduce FES-induced muscle fatigue by using ultrasound imaging as a sensing modality. This study will include persons with no disabilities and persons with Spinal Cord Injury (SCI). A research set-up comprising of a lower-limb exoskeleton and FES system will be used to achieve sitting-to-standing, walking, and standing-to-sitting movements. Ultrasound Imaging probes may be used to record muscle activity of the stimulated muscles. The signals derived from ultrasound will be used to optimize FES in order to reduce muscle fatigue as well as assess muscle fatigue.
This study will compare the VerTouch device to palpation and ultrasound (US) techniques used to identifying the anatomic landmarks and optimal location for neuraxial access. This trial of the VerTouch device will be compared to the gold standard of palpatoin and the commonly cited US techniques.