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https://www.readbyqxmd.com/read/28795253/autonomic-responses-to-head-up-tilt-test-in-children-with-autism-spectrum-disorders
#1
Véronique-Aurélie Bricout, Marion Pace, Léa Dumortier, Anne Favre-Juvin, Michel Guinot
Autism Spectrum Disorders (ASD) is a group of neurodevelopmental disorders often manifested by social and behavioral deficiencies. Autonomic dysfunction is frequently reported in the autistic population but the mechanisms remain largely unknown. We aimed to characterize the cardiac autonomic profile of children with autism during a head-up tilt test. Thirty-nine male children were recruited: 19 controls (9.9 ± 1.6 years) and 20 children with ASD without intellectual disability (10.7 ± 1.2 years). Each child underwent a head-up tilt test on a motorized tilt table...
August 9, 2017: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/28790467/current-concepts-in-acetabular-positioning-in-total-hip-arthroplasty
#2
Deepu Bhaskar, Asim Rajpura, Tim Board
Being one of the most successful surgeries in the history of medicine, the indications for total hip arthroplasty have widened and are increasingly being offered to younger and fitter patients. This has also led to high expectations for longevity and outcomes. Acetabular cup position has a significant impact on the results of hip arthroplasty as it affects dislocation, abductor muscle strength, gait, limb lengths, impingement, noise generation, range of motion (ROM), wear, loosening, and cup failure. The variables in cup position are depth, height, and angular position (anteversion and inclination)...
July 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28768776/the-validity-and-reproducibility-of-cross-table-radiographs-compared-with-ct-scans-for-the-measurement-of-anteversion-of-the-acetabular-component-after-total-hip-arthroplasty
#3
A Pankaj, A Mittal, A Chawla
AIMS: The aim of this study was to assess the reproducibility and validity of cross table radiographs for measuring the anteversion of the acetabular component after total hip arthroplasty (THA) and to compare it with measurements using CT scans. PATIENTS AND METHODS: A total of 29 patients who underwent THA between June 2010 and January 2016 were included. There were 17 men and 12 women. Their mean age was 43 years (26 to 65). Seven patients underwent a bilateral procedure...
August 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28754145/changes-in-cardiac-function-and-hemodynamics-during-robot-assisted-laparoscopic-prostatectomy-with-steep-head-down-tilt-a-prospective-observational-study
#4
Naomi Ono, Junko Nakahira, Shoko Nakano, Toshiyuki Sawai, Toshiaki Minami
OBJECTIVE: Robot-assisted laparoscopic prostatectomy requires the patient to be placed in a steep head-down tilt. The aim of our study was to investigate changes in cardiac index and left ventricular end-diastolic volume in a steep had-down tilt. This is a prospective observational study. We investigated the influence of steep head-down tilt on cardiac function and hemodynamics without fluid restriction in 12 men of American Society of Anesthesiologists physical status I-II undergoing robot-assisted laparoscopic prostatectomy...
July 28, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28717053/pure-autonomic-failure
#5
REVIEW
Thomas P Brown
Pure autonomic failure is a degenerative disorder of the peripheral autonomic nervous system. Patients experience symptomatic hypotension that requires them to sit, squat or lie down to prevent syncope. It is associated with characteristic histopathological findings, resulting in neuronal cytoplasmic inclusions in the peripheral autonomic nerves. These lesions are responsible for defects in the synthesis and release of norepinephrine from sympathetic nerve terminals, resulting in significant hypotension. Patients with autonomic failure also have exaggerated blood pressure responses to common stimuli such as food or fluid intake, heat, exercise and medications...
July 17, 2017: Practical Neurology
https://www.readbyqxmd.com/read/28665291/the-compressed-breast-during-mammography-and-breast-tomosynthesis-in-vivo-shape-characterization-and-modeling
#6
Alejandro Rodríguez-Ruiz, Greeshma A Agasthya, Ioannis Sechopoulos
To characterize and develop a patient-based 3D model of the compressed breast undergoing mammography and breast tomosynthesis. During this IRB-approved, HIPAA-compliant study, 50 women were recruited to undergo 3D breast surface imaging with structured light (SL) during breast compression, along with simultaneous acquisition of a tomosynthesis image. A pair of SL systems were used to acquire 3D surface images by projecting 24 different patterns onto the compressed breast and capturing their reflection off the breast surface in approximately 12-16 s...
August 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28645449/high-incidence-of-st-t-changes-in-women-during-tilt-table-testing
#7
Prakash Goutham Suryanarayana, Jagdesh Kandala, Frank I Marcus
INTRODUCTION: We have observed electrocardiographic (ECG) changes primarily in women during tilt table testing. METHODS: We reviewed 12 lead ECGs during tilt studies between 2012 and 2016 for changes in ST segments and T waves during tilt table testing. Patients with distinctly abnormal baseline ECGs were excluded. RESULTS: Of the 180 tilt studies, 117 (65%) were in women. There were 32 patients with ECG changes during tilting. Of these, 28 (87...
June 9, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28644253/spectrum-of-autonomic-nervous-system-impairment-in-sj%C3%A3-gren-syndrome
#8
Brent P Goodman, Amy Crepeau, Priya S Dhawan, Julie A Khoury, Lucinda A Harris
OBJECTIVE: To describe the spectrum of autonomic dysfunction in a uniformly evaluated cohort of patients with Sjögren syndrome. METHODS: A series of 13 patients underwent a comprehensive evaluation for suspected autonomic impairment, including a neurological examination, autonomic testing, and laboratory studies. A diagnosis of Sjögren syndrome was established as the cause of autonomic dysfunction in all. Clinical features, findings on autonomic testing, and laboratory results are described...
July 2017: Neurologist
https://www.readbyqxmd.com/read/28643550/hip-joint-kinetics-in-the-table-tennis-topspin-forehand-relationship-to-racket-velocity
#9
Yoichi Iino
The purpose of this study was to determine hip joint kinetics during a table tennis topspin forehand, and to investigate the relationship between the relevant kinematic and kinetic variables and the racket horizontal and vertical velocities at ball impact. Eighteen male advanced table tennis players hit cross-court topspin forehands against backspin balls. The hip joint torque and force components around the pelvis coordinate system were determined using inverse dynamics. Furthermore, the work done on the pelvis by these components was also determined...
June 23, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28626427/distinctive-steady-state-heart-rate-and-blood-pressure-responses-to-passive-robotic-leg-exercise-during-head-up-tilt-a-pilot-study-in-neurological-patients
#10
Amirehsan Sarabadani Tafreshi, Robert Riener, Verena Klamroth-Marganska
Introduction: Robot-assisted tilt table therapy was proposed for early rehabilitation and mobilization of patients after diseases such as stroke. A robot-assisted tilt table with integrated passive robotic leg exercise (PE) mechanism has the potential to prevent orthostatic hypotension usually provoked by verticalization. In a previous study with rather young healthy subjects [average age: 25.1 ± 2.6 years (standard deviation)], we found that PE effect on the cardiovascular system depends on the verticalization angle of the robot-assisted tilt table...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28617840/a-new-test-for-diagnosing-vasovagal-syncope-standing-after-treadmill-test-with-sublingual-nitrate-administration
#11
Tae-Hoon Kim, Ho-Jun Jang, Sihun Kim, Sung Yun Cho, Kyung Sun Song, Christopher Pickett, Heiko J Schmitt, Juyong Lee
INTRODUCTION: Increased adrenergic tone might be an additional trigger of orthostatic stress of vasovagal syncope (VVS). Exercise before standing might provide increased sensitivity compared to standing using a sublingual nitroglycerines protocol during tilt table testing. The aim of this study was to evaluate the diagnostic value of treadmill testing before standing with nitroglycerin administration. METHODS AND RESULTS: A total of 36 patients with syncope or presyncope were enrolled for the test...
2017: PloS One
https://www.readbyqxmd.com/read/28616731/renal-nerve-stimulation-for-treatment-of-neurocardiogenic-syncope-a-review-from-perspective-of-commercialization-potential
#12
REVIEW
B O'Brien, H Zafar, F Sharif
A strong evidence of outcomes for vasovagal syncope is not easily identified. It would seem reasonable that the proposed Mayo Clinic technology would be reserved for cases with severe recurrent or refractory syncope. However, recurrence levels are relatively low, and while some predictive methods have been proposed, recurrence is also influenced by the interaction that occurs during screening and examinations, i.e. recurrence diminishes once an initial diagnosis has been made. Finally, a key factor in being able to identify suitable patients relates to understanding the relative significance of the vasodepression and cardioinhibitory components-the therapy is best suited to patients that have a significant level of both components...
June 14, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28598894/left-lateral-table-tilt-for-elective-cesarean-delivery-under-spinal-anesthesia-has-no-effect-on-neonatal-acid-base-status-a-randomized-controlled-trial
#13
RANDOMIZED CONTROLLED TRIAL
Allison J Lee, Ruth Landau, James L Mattingly, Margaret M Meenan, Beatriz Corradini, Shuang Wang, Stephanie R Goodman, Richard M Smiley
BACKGROUND: Current recommendations for women undergoing cesarean delivery include 15° left tilt for uterine displacement to prevent aortocaval compression, although this degree of tilt is practically never achieved. We hypothesized that under contemporary clinical practice, including a crystalloid coload and phenylephrine infusion targeted at maintaining baseline systolic blood pressure, there would be no effect of maternal position on neonatal acid base status in women undergoing elective cesarean delivery with spinal anesthesia...
August 2017: Anesthesiology
https://www.readbyqxmd.com/read/28585146/deceleration-capacity-a-novel-measure-for-autonomic-nervous-system-in-patients-with-vasovagal-syncope-on-tilt-table-testing
#14
Fen Huang, Chun-Fang Xu, Xiao-Yan Deng, Ping Zuo, Fan Lin, Jing-Jing Fan, Wen-Jia Xu, Xiao-Yun Yang
This study was to investigate the changes of autonomic nerve function and hemodynamics in patients with vasovagal syncope (VVS) during head-up tilt-table testing (HUT). HUT was performed in 68 patients with unexplained syncope and 18 healthy subjects served as control group. According to whether bradycardia, hypotension or both took place during the onset of syncope, the patients were divided during the test into three subgroups: vasodepressor syncope (VD), cardioinhibitory syncope (CI) and mixed syncope (MX) subgroups...
June 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28529963/high-current-table-top-setup-for-femtosecond-gas-electron-diffraction
#15
Omid Zandi, Kyle J Wilkin, Yanwei Xiong, Martin Centurion
We have constructed an experimental setup for gas phase electron diffraction with femtosecond resolution and a high average beam current. While gas electron diffraction has been successful at determining molecular structures, it has been a challenge to reach femtosecond resolution while maintaining sufficient beam current to retrieve structures with high spatial resolution. The main challenges are the Coulomb force that leads to broadening of the electron pulses and the temporal blurring that results from the velocity mismatch between the laser and electron pulses as they traverse the sample...
July 2017: Structural Dynamics (Melville, N.Y.)
https://www.readbyqxmd.com/read/28520565/use-of-a-tilting-orthopedic-fracture-table-to-facilitate-proper-patient-positioning-during-intrathecal-neurolysis-with-hyperbaric-phenol-a-case-report
#16
Nathaniel H Loo, Gerald Matchett
We describe the case of a 41-year-old woman with metastatic cervical cancer and a large mass eroding into the pelvis and left lumbosacral plexus. The patient had intractable left lower extremity pain refractory to standard therapies, and she elected to undergo intrathecal neurolysis. A diagnostic intrathecal block was performed at the T11-12 interspace followed by intrathecal neurolysis with 6% phenol in glycerin on a subsequent date. During both procedures, we used a tilting radiolucent orthopedic fracture table to maintain strict left lateral-supine positioning...
May 17, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28507235/assessing-the-strength-of-cardiac-and-sympathetic-baroreflex-controls-via-transfer-entropy-during-orthostatic-challenge
#17
Alberto Porta, Andrea Marchi, Vlasta Bari, Beatrice De Maria, Murray Esler, Elisabeth Lambert, Mathias Baumert
The study assesses the strength of the causal relation along baroreflex (BR) in humans during an incremental postural challenge soliciting the BR. Both cardiac BR (cBR) and sympathetic BR (sBR) were characterized via BR sequence approaches from spontaneous fluctuations of heart period (HP), systolic arterial pressure (SAP), diastolic arterial pressure (DAP) and muscle sympathetic nerve activity (MSNA). A model-based transfer entropy method was applied to quantify the strength of the coupling from SAP to HP and from DAP to MSNA...
June 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28497215/evidence-based-prevention-and-treatment-of-osteoporosis-after-spinal-cord-injury-a-systematic-review
#18
REVIEW
Saeed Soleyman-Jahi, Ali Yousefian, Radin Maheronnaghsh, Farhad Shokraneh, Shayan Abdollah Zadegan, Akbar Soltani, Seyed Mostafa Hosseini, Alexander R Vaccaro, Vafa Rahimi-Movaghar
PURPOSE: Spinal cord injury (SCI) results in accelerated bone mineral density (BMD) loss and disorganization of trabecular bone architecture. The mechanisms underlying post-SCI osteoporosis are complex and different from other types of osteoporosis. Findings of studies investigating efficacy of pharmacological or rehabilitative interventions in SCI-related osteoporosis are controversial. The aim of this study was to review the literature pertaining to prevention and evidence-based treatments of SCI-related osteoporosis...
May 11, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28494046/traditional-postextractive-implant-site-preparation-compared-with-pre-extractive-interradicular-implant-bed-preparation-in-the-mandibular-molar-region-using-an-ultrasonic-device-a-randomized-pilot-study
#19
Antonio Scarano
PURPOSE: The immediate placement of single postextractive implants is increasing in the everyday clinical practice. Due to insufficient bone tissue volume, proper primary stability, essential for subsequent osseointegration, is sometimes not reached. The aim of this work was to compare two different approaches: implant bed preparation before and after root extraction. MATERIALS AND METHODS: Twenty-two patients of both sexes were selected who needed an implant-prosthetic rehabilitation of the fractured first mandibular molar or presented an untreatable endodontic pathology...
May 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28472974/benefit-of-dual-chamber-pacing-with-closed-loop-stimulation-in-tilt-induced-cardio-inhibitory-reflex-syncope-biosync-trial-study-protocol-for-a-randomized-controlled-trial
#20
Michele Brignole, Marco Tomaino, Arnaud Aerts, Fabrizio Ammirati, Félix Alejandro Ayala-Paredes, Jean-Claude Deharo, Attilio Del Rosso, Mohamed H Hamdan, Maurizio Lunati, Angel Moya, Alessio Gargaro
BACKGROUND: The efficacy of dual-chamber cardiac pacing in neuro-mediated reflex syncope with a cardio-inhibitory response to the Tilt-Table test (TT) has not been definitively assessed so far. The lack of reproducibility of results from previous studies may be partially explained by discrepancies in subject selection and some weaknesses in design and methods. The European Society of Cardiology (ESC) has set a class IIb indication to pacemaker implantation in this population recommending further research...
May 4, 2017: Trials
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