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https://www.readbyqxmd.com/read/28188470/modeling-the-effect-of-tilting-passive-leg-exercise-and-functional-electrical-stimulation-on-the-human-cardiovascular-system
#1
Amirehsan Sarabadani Tafreshi, Jan Okle, Verena Klamroth-Marganska, Robert Riener
Long periods of bed rest negatively affect the human body organs, notably the cardiovascular system. To avert these negative effects and promote functional recovery in patients dealing with prolonged bed rest, the goal is to mobilize them as early as possible while controlling and stabilizing their cardiovascular system. A robotic tilt table allows early mobilization by modulating body inclination, automated passive leg exercise, and the intensity of functional electrical stimulation applied to leg muscles (inputs)...
February 10, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28182163/which-is-preferable-for-orthostatic-hypotension-diagnosis-in-older-adults-active-standing-test-or-head-up-tilt-table-test
#2
Ali Ekrem Aydin, Pinar Soysal, Ahmet Turan Isik
BACKGROUND: Correct evaluation of orthostatic hypotension (OH) is crucial in geriatric practice, since OH is associated with mortality and morbidity. The study aimed to determine the most appropriate method for measuring blood pressure in transition from supine to upright position in order to diagnose OH in older adults. METHODS: Active standing test (AST) and head-up tilt table (HUT) test as well as comprehensive geriatric assessment (CGA), including mini-mental state examination or the cognitive state test, mini-nutritional assessment, basic and instrumental activities of daily living, and Tinetti performance-oriented mobility assessment indexes, were performed in 290 geriatric patients...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28160388/cardiovascular-autonomic-dysfunction-in-ehlers-danlos-syndrome-hypermobile-type
#3
Alan Hakim, Chris O'Callaghan, Inge De Wandele, Lauren Stiles, Alan Pocinki, Peter Rowe
Autonomic dysfunction contributes to health-related impairment of quality of life in the hypermobile type of Ehlers-Danlos syndrome (hEDS). Typical signs and symptoms include tachycardia, hypotension, gastrointestinal dysmotility, and disturbed bladder function and sweating regulation. Cardiovascular autonomic dysfunction may present as Orthostatic Intolerance, Orthostatic Hypotension, Postural Orthostatic Tachycardia Syndrome, or Neurally Mediated Hypotension. The incidence, prevalence, and natural history of these conditions remain unquantified, but observations from specialist clinics suggest they are frequently seen in hEDS...
February 4, 2017: American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
https://www.readbyqxmd.com/read/28143709/arterial-hypertension-in-migraine-role-of-familial-history-and-cardiovascular-phenotype
#4
Laura Babayan, Oleg V Mamontov, Alexander V Amelin, Mikhail Bogachev, Alexei A Kamshilin
Recent studies indicate that migraine is associated with increased risk of cardiovascular diseases. However, links between autonomic cardiovascular regulation, arterial hypertension (AH) and migraine are still little explored. In this study, we evaluated autonomic regulation in migraine patients with and without hypertension. We studied 104 patients with migraine, aged 34±10 y, including 28 with and 76 without hypertension (M+AH and M-AH groups, respectively). The control group consisted of 88 healthy volunteers matched by age and sex...
January 25, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28113228/variability-of-ventricular-repolarization-dispersion-quantified-by-time-warping-the-morphology-of-the-t-waves
#5
Julia Ramirez, Michele Orini, Derek Tucker, Esther Pueyo, Pablo Laguna
: We propose two electrocardiogram (ECG)-derived markers of T-wave morphological variability in the temporal, dw , and amplitude, da , domains. Two additional markers, d(NL)w and d(NL)a , restricted to measure the non-linear information present within dw and da are also proposed. METHODS: We evaluated the accuracy of the proposed markers in capturing T-wave time and amplitude variations in 3 situations: (1) In a simulated set up with presence of additive Laplacian noise, (2) when modifying the spatio-temporal distribution of electrical repolarization with an electro-physiological cardiac model and (3) in ECG records from healthy subjects undergoing a tilt table test...
October 4, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28045689/racial-differences-in-response-to-tilt-table-testing-in-patients-refered
#6
Jameel Ahmed, Peerawut Deeprasertkul, Kevin M Monahan, Paul LeLorier
BACKGROUND: Syncope is a common problem in the general population and results in significant societal and patient costs. Several small studies have demonstrated differences in orthostatic response, and possibly tolerance, between blacks and whites. Based on these observations, we retrospectively reviewed results from our tilt table database to identify potential differences in response to tilt-table testing with regards to race, between black and white patients. METHODS: The reports of 446 tilt-table tests performed on adults, older than 18 years of age, at Boston Medical Center, an urban, tertiary-care, academic hospital, were reviewed...
November 2016: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28039767/static-otolithic-drive-alters-presynaptic-inhibition-in-soleus-motor-pool
#7
Apollonia Fox, David Koceja
The vestibular system has both direct and indirect connections to the soleus motor pool via the vestibulospinal and reticulospinal tracts. The exact nature of how this vestibular information is integrated within the spinal cord is largely unknown. The purpose of this study was to identify whether changes in static otolithic drive altered the amount of presynaptic inhibition in the soleus H-reflex pathway. Changes in static otolithic drive were investigated in sixteen healthy participants using a tilt table...
February 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28018240/distinctive-steady-state-heart-rate-and-blood-pressure-responses-to-passive-robotic-leg-exercise-and-functional-electrical-stimulation-during-head-up-tilt
#8
Amirehsan Sarabadani Tafreshi, Robert Riener, Verena Klamroth-Marganska
Introduction: Tilt tables enable early mobilization of patients by providing verticalization. But there is a high risk of orthostatic hypotension provoked by verticalization, especially after neurological diseases such as spinal cord injury. Robot-assisted tilt tables might be an alternative as they add passive robotic leg exercise (PE) that can be enhanced with functional electrical stimulation (FES) to the verticalization, thus reducing the risk of orthostatic hypotension. We hypothesized that the influence of PE on the cardiovascular system during verticalization (i...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27941082/parental-perceptions-of-pediatric-pain-and-pots-related-disability
#9
Elizabeth M Keating, Ryan M Antiel, Karen E Weiss, Dustin Wallace, Seth J Antiel, Philip R Fischer, Ashley N Junghans-Rutelonis, Cynthia Harbeck-Weber
Adolescents with postural orthostatic tachycardia syndrome (POTS) often have pain and functional impairment. This study evaluated how parental attributions of children's symptoms relate to child functional impairment. Adolescents with chronic pain and clinical symptoms suggestive of autonomic dysfunction (fatigue, dizziness, nausea) that attended a multidisciplinary chronic pain clinic completed measures of depression, anxiety, and functioning (n = 141). Parents of 114 of these patients completed the Parent Pain Attribution Questionnaire (PPAQ), a measure indicating the extent they believe physical and psychosocial factors account for their child's health condition...
December 8, 2016: Clinical Pediatrics
https://www.readbyqxmd.com/read/27909502/combined-diagnostic-yield-of-tilt-table-test-and-implantable-loop-recorder-to-identify-patients-affected-by-severe-clinical-presentation-of-neurally-mediated-reflex-syncope-who-could-respond-to-cardiac-pacing
#10
Tomaino M, Unterhuber M, Sgobino P, Pescoller F, Manfrin M, Rauhe W
In this study we wanted to verify the diagnostic value of tilt table test (TTT) to predict the efficacy of cardiac pacing (PM) for preventing recurrences of neurally mediated reflex syncope (NMS) in patients with cardioinhibitory activity (CI) documented by implantable loop recorder (ILR). Among patients selected by ILR in the context of severe clinical presentation of NMS, we analysed those who underwent PM implantation. In this observational and retrospective study we wanted to verify the results of TTT in the groups of treated patients with and without recurrences...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27773421/dominant-transmission-observed-in-adolescents-and-families-with-orthostatic-intolerance
#11
Jennifer E Posey, Rebecca Martinez, Jeremy E Lankford, James R Lupski, Mohammed T Numan, Ian J Butler
BACKGROUND: Orthostatic intolerance is typically thought to be sporadic and attributed to cerebral autonomic dysfunction. We sought to identify families with inherited autonomic dysfunction manifest as symptomatic orthostatic intolerance to characterize mode of inheritance and clinical features. METHODS: Sixteen families with two or more first- or second-degree relatives with autonomic dysfunction and orthostatic intolerance were enrolled. A clinical diagnosis of autonomic dysfunction defined by symptomatic orthostatic intolerance diagnosed by head-up tilt table testing was confirmed for each proband...
January 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/27734180/assessment-of-autonomic-symptoms-in-a-medically-complex-urban-patient-population
#12
Jessica Robinson-Papp, Sandeep K Sharma, Mary Catherine George, David M Simpson
PURPOSE: Urban, minority communities are disproportionately affected by the chronic diseases associated with autonomic neuropathy; however validated measures of autonomic symptoms have not been studied in these complex populations. We sought to validate the Autonomic Symptom Profile (ASP) in a low income, medically complex, urban patient population. METHODS: Ninety-seven adults were recruited from the outpatient neurology clinic of an academic medical center serving the East Harlem neighborhood of New York City...
February 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/27730767/cardiovascular-autonomic-dysfunction-in-patients-with-drug-induced-parkinsonism
#13
Joong Seok Kim, Dong Woo Ryu, Ju Hee Oh, Yang Hyun Lee, Sung Jin Park, Kipyung Jeon, Jong Yun Lee, Seong Hee Ho, Jungmin So, Jin Hee Im, Kwang Soo Lee
BACKGROUND AND PURPOSE: Recent studies have shown that several nonmotor symptoms differ between Parkinson's disease (PD) and drug-induced parkinsonism (DIP). However, there have been no reports on cardiovascular autonomic function in DIP, and so this study investigated whether cardiovascular autonomic function differs between PD and DIP patients. METHODS: This study consecutively enrolled 20 DIP patients, 99 drug-naïve PD patients, and 25 age-matched healthy controls who underwent head-up tilt-table testing and 24-h ambulatory blood pressure monitoring...
January 2017: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/27632862/comparison-of-hip-and-back-muscle-activity-and-pelvic-compensation-in-healthy-subjects-during-three-different-prone-table-hip-extension-exercises
#14
In-Cheol Jeon, Oh-Yun Kwon, Jong-Hyuck Weon, Ui-Jae Hwang, Sung-Hoon Jung
CONTEXT: Prone hip extension has been recommended for strengthening the back and hip muscles. Previous studies have investigated prone hip extension conducted with subjects on the floor in the prone position. However, no study has compared three different table hip extension (THE) positions in terms of the activities of the back and hip joint muscles with lumbopelvic motion. OBJECTIVE: This study sought to identify more effective exercises for strengthening the gluteus maximus (GM) by comparing three different exercises [THE alone, THE with the abdominal drawing-in maneuver (THEA), and THEA with chair support under the knee (THEAC)] based on electromyographic muscle activity and pelvic compensation...
August 24, 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/27600918/test-retest-reliability-and-four-week-changes-in-cardiopulmonary-fitness-in-stroke-patients-evaluation-using-a-robotics-assisted-tilt-table
#15
Jittima Saengsuwan, Lucia Berger, Corina Schuster-Amft, Tobias Nef, Kenneth J Hunt
BACKGROUND: Exercise testing devices for evaluating cardiopulmonary fitness in patients with severe disability after stroke are lacking, but we have adapted a robotics-assisted tilt table (RATT) for cardiopulmonary exercise testing (CPET). Using the RATT in a sample of patients after stroke, this study aimed to investigate test-retest reliability and repeatability of CPET and to prospectively investigate changes in cardiopulmonary outcomes over a period of four weeks. METHODS: Stroke patients with all degrees of disability underwent 3 separate CPET sessions: 2 tests at baseline (TB1 and TB2) and 1 test at follow up (TF)...
September 6, 2016: BMC Neurology
https://www.readbyqxmd.com/read/27600003/-differences-of-age-and-gender-in-orthostatic%C3%A2-hypertension-a-single-center-study
#16
Meihua Kang, Yi Xu, Runmei Zou, Lijia Wu, Ping Lin, Fang Li, Cheng Wang
OBJECTIVE: To explore the differences of Chinese people's age and gender in orthostatic hypertension (OHT) by a single-center experience study.
 METHODS: A total of 2 994 patients with unexplained syncope and dizziness, who were outpatients or had been hospitalized in Second Xiangya Hospital, Central South University from January 2000 to August 2012, were chosen and subjected to the head-up tilt table test (HUTT). Their ages ranged from 2.00 to 78.00 years old, with an average at 19...
August 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/27576180/endoscopic-anti-reflux-valve-for-post-esophagectomy-reflux-an-animal-study
#17
Yoshitomo Yanagimoto, Makoto Yamasaki, Hirotsugu Nagase, Takashi Kanemura, Shigeyoshi Higashi, Yasuhiro Miyazaki, Tomoki Makino, Tsuyoshi Takahashi, Yukinori Kurokawa, Hiroshi Miyata, Shuji Takiguchi, Masaki Mori, Yuichiro Doki, Kiyokazu Nakajima
Background and study aims: Gastric reflux into the remnant esophagus after subtotal or partial esophagectomy is associated with impairment in patient quality of life. We evaluated the feasibility, safety, and potential effectiveness of a novel procedure using a new endoscopic suturing device to create an anti-reflux valve (funnel) in pigs after esophagectomy with gastric tube reconstruction. Methods: The endoscopic procedure was performed in four pigs using a semi-full-thickness endoscopic suturing system (OverStitch; Apollo Endosurgery, Austin, Texas, USA)...
December 2016: Endoscopy
https://www.readbyqxmd.com/read/27541327/are-nonlinear-model-free-conditional-entropy-approaches-for-the-assessment-of-cardiac-control-complexity-superior-to-the-linear-model-based-one
#18
Alberto Porta, Beatrice De Maria, Vlasta Bari, Andrea Marchi, Luca Faes
OBJECTIVE: We test the hypothesis that the linear model-based (MB) approach for the estimation of conditional entropy (CE) can be utilized to assess the complexity of the cardiac control in healthy individuals. METHODS: A MB estimate of CE was tested in an experimental protocol (i.e. the graded head-up tilt) known to produce a gradual decrease of cardiac control complexity as a result of the progressive withdrawal and concomitant sympathetic activation. The MB approach was compared with traditionally exploited nonlinear model-free (MF) techniques such as corrected approximate entropy, sample entropy, corrected CE, two k-nearest-neighbor CE procedures and permutation CE...
August 16, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27486953/comparison-of-semiologies-between-tilt-induced-psychogenic-nonsyncopal-collapse-and-psychogenic-nonepileptic-seizures
#19
Geoffrey L Heyer, Dara V F Albert, Amanda Weber, Satyanarayana Gedela, Jorge Vidaurre
We sought to characterize the clinical features of tilt-induced psychogenic nonsyncopal collapse (PNSC) from a cohort of young patients and to compare the semiologies between PNSC and EEG-confirmed psychogenic nonepileptic seizures (PNES). A PNSC diagnosis was made if a clinical event occurred during tilt-table testing that the patient regarded as fainting, but neither hypotension nor EEG changes were present. A diagnosis of PNSC was made in 17.6% of all patients referred during the 15-month study period. Cohorts with psychogenic nonsyncopal collapse (n=40) and PNES (n=40) did not differ in age (15...
September 2016: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/27447483/effectiveness-of-a-very-early-stepping-verticalization-protocol-in-severe-acquired-brain-injured-patients-a-randomized-pilot-study-in-icu
#20
Giuseppe Frazzitta, Ilaria Zivi, Roberto Valsecchi, Sara Bonini, Sara Maffia, Katia Molatore, Luca Sebastianelli, Alessio Zarucchi, Diana Matteri, Giuseppe Ercoli, Roberto Maestri, Leopold Saltuari
BACKGROUND AND OBJECTIVE: Verticalization was reported to improve the level of arousal and awareness in patients with severe acquired brain injury (ABI) and to be safe in ICU. We evaluated the effectiveness of a very early stepping verticalization protocol on their functional and neurological outcome. METHODS: Consecutive patients with Vegetative State or Minimally Conscious State were enrolled in ICU on the third day after an ABI. They were randomized to undergo conventional physiotherapy alone or associated to fifteen 30-minute sessions of verticalization, using a tilt table with robotic stepping device...
2016: PloS One
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