Ashok Kumar Jaryal
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View article: Trans-spinal myogenic evoked potentials: a novel intraoperative technique for localizing motor deficits following loss of transcranial motor evoked potentials
Trans-spinal myogenic evoked potentials: a novel intraoperative technique for localizing motor deficits following loss of transcranial motor evoked potentials Open
Trans-spinal motor evoked potentials (TsMEP) represent a novel intraoperative neuromonitoring technique designed to localize motor deficits when transcranial motor evoked potentials (TcMEP) are lost or unreliable. This technique involves d…
View article: Comparison of monopolar and bipolar stimulation protocol for mapping of motor cortex
Comparison of monopolar and bipolar stimulation protocol for mapping of motor cortex Open
Objectives: Direct electrical cortical stimulation is the gold standard technique for intraoperative mapping of the motor cortex. The stimulation can be done in monopolar or bipolar configuration and with high or low-frequency stimulation …
View article: The Unchanging Latency of Transcranial Motor-Evoked Potentials Among Various Age Groups
The Unchanging Latency of Transcranial Motor-Evoked Potentials Among Various Age Groups Open
Background Human growth and development involve significant changes in bodily dimensions, yet motor learning appears to remain stable throughout life. This study investigates whether adjustments in motor velocity take place as individuals …
View article: The Unchanging Latency of Transcranial Motor Evoked Potentials amongst various Age Groups
The Unchanging Latency of Transcranial Motor Evoked Potentials amongst various Age Groups Open
Human growth and development entail dynamic changes in bodily dimensions, yet motor proficiency seems to remain consistent over time. This study examines the latency of Transcranial Motor Evoked Potentials (TcMEPs) across various age group…
View article: Cardiovascular Autonomic Deficits in Different Types of Achalasia
Cardiovascular Autonomic Deficits in Different Types of Achalasia Open
View article: Effect of Yoga-Based Cardiac Rehabilitation Program on Endothelial Function, Oxidative Stress, and Inflammatory Markers in Acute Myocardial Infarction: A Randomized Controlled Trial
Effect of Yoga-Based Cardiac Rehabilitation Program on Endothelial Function, Oxidative Stress, and Inflammatory Markers in Acute Myocardial Infarction: A Randomized Controlled Trial Open
Aims: The aim of this study was to evaluate the effects of yoga-based cardiac rehabilitation (Yoga-CaRe) on the endothelial system, oxidative stress, and inflammatory markers in patients with acute myocardial infarction (MI). Methods: A su…
View article: Baroreflex sensitivity is impaired in survivors of mild COVID‐19 at 3–6 months of clinical recovery; association with carotid artery stiffness
Baroreflex sensitivity is impaired in survivors of mild COVID‐19 at 3–6 months of clinical recovery; association with carotid artery stiffness Open
The association between the stiffening of barosensitive regions of central arteries and the derangements in baroreflex functions remains unexplored in COVID‐19 survivors. Fifty‐seven survivors of mild COVID‐19 (defined as presence of upper…
View article: Heart rate variability in patients presenting with anginal symptoms in absence of cardiac and other diseases
Heart rate variability in patients presenting with anginal symptoms in absence of cardiac and other diseases Open
Objectives: Angina is a symptom of coronary artery disease (CAD). Modulation of cardiac autonomic tone as assessed by heart rate (HR) variability (HRV) is found reduced in patients with CAD; myocardial ischemia, myocardial infarction and s…
View article: Both central and peripheral arterial stiffness determines brachial artery resting retrograde flow in patients with ischemic heart disease and healthy human subjects
Both central and peripheral arterial stiffness determines brachial artery resting retrograde flow in patients with ischemic heart disease and healthy human subjects Open
Retrograde flow in endothelial cell cultures has been shown to induce a pro-atherogenic phenotype. Despite its potential role as a pathophysiological link between cardiovascular risk factors and atherosclerotic disease, resting retrograde …
View article: Respiratory Dysfunction in Parkinson's Disease
Respiratory Dysfunction in Parkinson's Disease Open
Background: Parkinson's disease (PD) is a neurodegenerative disease perceived as a motor disorder. It is most commonly associated with autonomic dysfunction, affecting multiple systems. This altered autonomic control might be reflected by …
View article: The Cardiovascular Variability during Transient 6° Head Down Tilt and Slow Breathing in Yoga Experienced Healthy Individuals
The Cardiovascular Variability during Transient 6° Head Down Tilt and Slow Breathing in Yoga Experienced Healthy Individuals Open
Objective: The intervention of yoga has been shown to improve autonomic conditioning in humans and better adaptability to orthostatic challenges. Similarly, slow breathing at 0.1 Hz akin to pranayama also increases baroreflex sensitivity (…
View article: Cortical and Subcortical Brain Area Atrophy in SCA1 and SCA2 Patients in India: The Structural MRI Underpinnings and Correlative Insight Among the Atrophy and Disease Attributes
Cortical and Subcortical Brain Area Atrophy in SCA1 and SCA2 Patients in India: The Structural MRI Underpinnings and Correlative Insight Among the Atrophy and Disease Attributes Open
Introduction: Genetically defined spinocerebellar ataxia (SCA) type 1 and 2 patients have differential clinical profile along with probable distinctive cortical and subcortical neurodegeneration. We compared the degree of brain atrophy in …
View article: Predictive value of intraoperative D-wave and m-MEP neurophysiological monitoring in patients with preoperative motor deficits in immediate and late postoperative period
Predictive value of intraoperative D-wave and m-MEP neurophysiological monitoring in patients with preoperative motor deficits in immediate and late postoperative period Open
Background: Presence of preoperative motor deficits in patients poses a distinct challenge in monitoring the integrity of corticospinal tracts during spinal surgeries. The inconsistency of the motor-evoked potentials is such patients, limi…
View article: Improvement in Pulse Wave Velocity and Baroreflex Sensitivity Three-and Six-Month Postrenal Transplantation
Improvement in Pulse Wave Velocity and Baroreflex Sensitivity Three-and Six-Month Postrenal Transplantation Open
Cardiovascular diseases are an important cause of mortality in end-stage renal disease (ESRD) and increased arterial stiffness and autonomic dysfunction have been proposed to explain part of this excess cardiovascular risk. This prospectiv…
View article: Brachial Artery “Low-Flow Mediated Constriction” Is Associated with Myocardial Perfusion Defect Severity and Mediated by an Altered Flow Pattern during Occlusion
Brachial Artery “Low-Flow Mediated Constriction” Is Associated with Myocardial Perfusion Defect Severity and Mediated by an Altered Flow Pattern during Occlusion Open
Introduction: The relationship between low flow-mediated constriction (LFMC), a new proposed measure of endothelial function, with cardiovascular disease severity and its hypothesized stimulus, that is, low flow, has not been…
View article: Renal Transplantation Significantly Improves Autonomic Function with Normalization of Baroreflex Sensitivity as Early as Three-Month Post-transplantation
Renal Transplantation Significantly Improves Autonomic Function with Normalization of Baroreflex Sensitivity as Early as Three-Month Post-transplantation Open
The most common cause of mortality in chronic kidney disease patients is cardiovascular events. Cardiovascular autonomic dysfunction is likely to contribute high incidence of cardiovascular mortality, and in addition to adrenergic overdriv…
View article: P.09 Differential Low Flow Mediated Constriction (LFMC) Responses in Radial and Brachial Arteries of Healthy Humans are Attributed to Occlusion Induced Flow Changes
P.09 Differential Low Flow Mediated Constriction (LFMC) Responses in Radial and Brachial Arteries of Healthy Humans are Attributed to Occlusion Induced Flow Changes Open
View article: P.10 Distal Arterial Occlusion at Different Grades of Supra-Systolic Pressures Differentially Modulates Flow Velocity and Shear Rates in Radial Artery
P.10 Distal Arterial Occlusion at Different Grades of Supra-Systolic Pressures Differentially Modulates Flow Velocity and Shear Rates in Radial Artery Open
Background Low-flow-Mediated Constriction (LFMC) is considered as a measure of resting endothelial function and is believed to occur in response to reduction in flow during supra-systolic occlusion [1]. However, supra-systolic occlusion ma…
View article: P.02 Differential ‘Mediators’ of Low-Flow ‘Mediated’ Constriction in Healthy vs Patients of Ischemic Heart Disease
P.02 Differential ‘Mediators’ of Low-Flow ‘Mediated’ Constriction in Healthy vs Patients of Ischemic Heart Disease Open
Background Low-flow mediated constriction (LFMC) has emerged as a non-invasive tool for assessment of endothelial dysfunction [1]. There is insufficient data on association between change in artery diameter during occlusion with its possib…
View article: YI 1.6 Flow Mediated Slowing of Pulse Wave Velocity as a Measure of Endothelial Function
YI 1.6 Flow Mediated Slowing of Pulse Wave Velocity as a Measure of Endothelial Function Open
Purpose Ultrasonographic measurement of flow mediated dilatation (FMD) of brachial artery is the gold standard non-invasive technique to measure endothelial function. However, measurement of FMD is technically cumbersome, operator dependen…
View article: Severe Cardiac Dysautonomia and Sudden Death in a Patient Presenting with Anginal Symptoms in Absence of Cardiovascular and Other Diseases: A Case Report
Severe Cardiac Dysautonomia and Sudden Death in a Patient Presenting with Anginal Symptoms in Absence of Cardiovascular and Other Diseases: A Case Report Open
Angina is a type of chest pain, experienced by patients with ischemic heart diseases. Cardiac autonomicmodulation as assessed by heart rate variability and baroreflex sensitivity is found reduced inischemic heart disease patients. Marked r…
View article: Effect of Disease Severity on Respiratory Impedance in Parkinson’s Disease
Effect of Disease Severity on Respiratory Impedance in Parkinson’s Disease Open
Background: Parkinson’s disease (PD) is a progressive neurodegenerative disorder. PD has been traditionally perceived as a motor disorder. However, it is frequently associated with pulmonary dysfunction which has been assessed by Spirometr…
View article: Is There a Difference in Autonomic Dysfunction Between Multiple System Atrophy Subtypes?
Is There a Difference in Autonomic Dysfunction Between Multiple System Atrophy Subtypes? Open
Background Autonomic dysfunction forms the diagnostic cornerstone in MSA. Data are limited on autonomic dysfunction differences between the two subtypes, MSA‐C and MSA‐P. Objectives To assess autonomic dysfunction in MSA subtypes and Parki…
View article: P127 Graded Cuff Compression Protocol to Induce Retrograde Shear Produces Proportionate Increment in Regional Arterial Compliance in Human Peripheral Artery
P127 Graded Cuff Compression Protocol to Induce Retrograde Shear Produces Proportionate Increment in Regional Arterial Compliance in Human Peripheral Artery Open
Background: External compression using pneumatic cuff inflation is a well-established model used to induce incremental changes in proximal retrograde flow and shear [1]. The mechanisms behind distal cuff compression leading to proximal inc…
View article: Larger screw on the concave side of apex pedicle: Friend or foe? Report on a rare cause of neurological deficit in scoliosis surgery
Larger screw on the concave side of apex pedicle: Friend or foe? Report on a rare cause of neurological deficit in scoliosis surgery Open
Pedicle screw instrumentation is currently the “gold standard” in scoliosis surgery. However, placement of pedicle screws in thoracic spine is considered challenging. Previous studies have described morphometric changes in the pedicle when…
View article: P127 Graded Cuff Compression Protocol to Induce Retrograde Shear Produces Proportionate Increment in Regional Arterial Compliance in Human Peripheral Artery
P127 Graded Cuff Compression Protocol to Induce Retrograde Shear Produces Proportionate Increment in Regional Arterial Compliance in Human Peripheral Artery Open
Background External compression using pneumatic cuff inflation is a well-established model used to induce incremental changes in proximal retrograde flow and shear [1]. The mechanisms behind distal cuff compression leading to proximal incr…
View article: P10 Oscillatory Flow Patterns in Peripheral Conduit Artery are Related to Central Arterial Stiffness in Healthy Subjects
P10 Oscillatory Flow Patterns in Peripheral Conduit Artery are Related to Central Arterial Stiffness in Healthy Subjects Open
View article: 2.5 Differential Association of Central and Peripheral Arterial Compliance with Resting and Recruitable Endothelial Function in Healthy Human Subjects
2.5 Differential Association of Central and Peripheral Arterial Compliance with Resting and Recruitable Endothelial Function in Healthy Human Subjects Open
Background Regional arterial compliance in peripheral arteries is known to be associated with ‘recruitable’ endothelial function probably mediated by an increase in smooth muscle tone [1]. However, the association between regional arterial…
View article: Comparison of Autonomic Function before and after Surgical Intervention in Patients with Temporal Lobe Epilepsy
Comparison of Autonomic Function before and after Surgical Intervention in Patients with Temporal Lobe Epilepsy Open
We found that hemispheric lateralization of seizure foci in the temporal lobe had a differential effect on autonomic CV functions before surgery. Before surgery, parasympathetic reactivity was higher in the LTLE group, and sympathetic reac…
View article: Regional arterial stiffness in central and peripheral arteries is differentially related to endothelial dysfunction assessed by brachial flow-mediated dilation in metabolic syndrome
Regional arterial stiffness in central and peripheral arteries is differentially related to endothelial dysfunction assessed by brachial flow-mediated dilation in metabolic syndrome Open
The interrelationship between endothelial function and arterial stiffness may be different for central and peripheral arteries due to their structural and functional differences. The study aims to assess the interrelationship between centr…