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https://www.readbyqxmd.com/read/29335614/reliability-of-pulse-waveform-separation-analysis-responses-to-an-orthostatic-challenge
#1
Lee Stoner, Keeron Stone, Erik D Hanson, James Faulkner, Simon Fryer, Daniel Credeur
Cardiovascular autonomic nervous system function can be assessed using an orthostatic challenge to induce arterial wave reflection. While arterial reflection is typically estimated using a central augmentation index, a superior estimation can be obtained using pulse wave separation analysis to estimate the aortic backward pressure wave (Pb). However, to be of value in a clinical or research setting, an assessment tool must be precise (reliable). Therefore, this study sought to determine the measurement precision of Pb responses to a modified tilt-table test...
January 15, 2018: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/29315657/dysautonomy-in-different-death-risk-groups-rassi-score-in-patients-with-chagas-heart-disease
#2
Catherine Masiel Merejo Peña, Michel Silva Reis, Basílio de Bragança Pereira, Emília Matos do Nascimento, Roberto Coury Pedrosa
BACKGROUND: It has been difficult to prove that the "catecholamine-induced cardiomyopathy" contributes to the mechanism of sudden cardiac death in Chagas heart disease. Also, it is almost impossible to rule out the possibility that is not involved in the process. More importantly, the vagal-cholinergic pathway in the ventricle plays a direct role in the prevention of the initiation of complex ventricular arrhythmias, including non-sustained ventricular tachycardia, ventricular fibrillation responsible for sudden death...
January 5, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29275282/study-of-factors-involved-in-the-gravimetric-separation-process-to-treat-soil-contaminated-by-municipal-solid-waste
#3
Ikbel Mouedhen, Lucie Coudert, Jean-François Blais, Guy Mercier
The current research investigated the effectiveness of a gravimetric process (shaking table) to treat soil contaminated by municipal solid waste. A detailed characterization of the inorganic pollutants was performed, followed by concentrating the metals within smaller volumes using the shaking table technology. The densimetric examination of the 1-2 mm and 0.250-1 mm fractions of the contaminated soil showed that lead (Pb), copper (Cu), and tin (Sn) were mostly concentrated in the heavy fraction (metal removals > 50%)...
December 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29247534/effect-of-patient-rotation-on-ovary-observation-during-laparoscopic-ovariectomy-in-dogs
#4
Lea M Liehmann, Tanja Seny, Gilles Dupré
OBJECTIVE: To describe the optimal recumbency for laparoscopic ovariectomy (LapOVE) in dogs. STUDY DESIGN: Prospective clinical trial. ANIMALS: Sixteen healthy client-owned female dogs undergoing routine single-port LapOVE. METHODS: Anesthetized dogs were placed in dorsal recumbency on a tilting operation table. The operating laparoscope was introduced and, after inspection of abdominal organs, directed toward the randomly assigned ovary...
December 16, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/29240992/heart-rate-recovery-and-diastolic-blood-pressure-ratio-on-the-treadmill-test-predict-an-induction-and-recurrence-of-vasovagal-syncope
#5
Yu Jeong Choi, Ki-Woon Kang, Sang Hyun Jang, Jae Guk Kim, Soo Joo Lee, Kyung Tea Jung
Background/Aims: The induction and recurrence of syncope is a concerning situation that could be unpredicted in the vasovagal syncope (VVS). We investigated a simple predictor for the induced and recurrent VVS during Head-Up table-tilt Test (HUT) and clinically follow-up. Methods: The 143 consecutive patients with VVS (age 31 ± 19 years, 33 male) who referred by a cardiologist or neurologist and had undergone an echocardiogram, HUT, and a treadmill exercise test (TMT) were recruited and clinically follow-up...
December 18, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29240320/time-has-not-passed-for-the-tilt-table-test
#6
Jani Pirinen, Markku Walamies
INTRODUCTION: The tilt table test is used for determining the loss of consciousness, and in the case of reflex syncope, for gaining insight into the circulatory mechanism. In 2015, all tilt tests within the Hospital District of Helsinki and Uusimaa (HUS) were performed in the clinical physiology unit of the HUS Medical Imaging Center at Peijas Hospital. METHODS: The patients' medical history, circulation monitor printouts, and medical reports were recorded from all tilt tests carried out during 2015...
2017: Duodecim; Lääketieteellinen Aikakauskirja
https://www.readbyqxmd.com/read/29213051/a-robot-aided-visuo-motor-training-that-improves-proprioception-and-spatial-accuracy-of-untrained-movement
#7
Naveen Elangovan, Leonardo Cappello, Lorenzo Masia, Joshua Aman, Jürgen Konczak
Proprioceptive function can become enhanced during motor learning. Yet, we have incomplete knowledge to what extent proprioceptive function is trainable and how a training that enhances proprioception may influence performance in untrained motor skills. To address this knowledge gap, healthy young adults (N = 14) trained in a visuomotor task that required learners to make increasingly accurate wrist movements. Using a robotic exoskeleton coupled with a virtual visual environment, participants tilted a virtual table through continuous wrist flexion/extension movements with the goal to position a rolling ball on table into a target...
December 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29190150/intravenous-saline-administration-in-patients-with-severe-acquired-brain-injury-and-orthostatic-intolerance-for-tilt-table-mobilization
#8
Christian Riberholt, Niels Olesen, Peter Hovind, Jesper Mehlsen, Tue Hvass Petersen
PRIMARY OBJECTIVE: This study aimed to investigate the effect of intravenous saline administration on orthostatic hypotension (OH) during head up tilt (HUT) and the change in the renin-angiotensin-aldosterone system before and after HUT in patients with severe acquired brain injury (ABI). RESEARCH DESIGN: The study is designed as an observational study. METHODS AND PROCEDURES: Fourteen patients with ABI, low level of consciousness and OH were monitored before, during and after HUT with non-invasive beat-to-beat blood pressure measurement, and transcranial Doppler determination of middle cerebral artery blood flow velocity...
November 30, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29189552/autonomic-reflex-screen-test-abnormalities-in-cold-induced-sweating-syndrome-type-1
#9
Ahmed M El-Dokla, Jannatul Ferdous, Sara T Ali, Khondoker Alam
Cold-induced sweating syndrome (CISS) is a rare autosomal recessive disease due to mutation in the Cytokine receptor-like factor 1 (CRLF1). The characteristic symptom of CISS is the tendency to sweat profusely especially in the upper body and hands when the patient is exposed to cold temperature. We sought to first report the findings of autonomic reflex screen in a case of CISS type 1 with Cytokine receptor-like factor 1 mutation. Valsalva morphology, Valsalva ratio, and heart rate response to deep breathing were normal for the patient's age...
December 2017: Journal of Clinical Neuromuscular Disease
https://www.readbyqxmd.com/read/29165784/interventions-for-managing-skeletal-muscle-spasticity-following-traumatic-brain-injury
#10
REVIEW
Anneliese Synnot, Marisa Chau, Veronica Pitt, Denise O'Connor, Russell L Gruen, Jason Wasiak, Ornella Clavisi, Loyal Pattuwage, Kate Phillips
BACKGROUND: Skeletal muscle spasticity is a major physical complication resulting from traumatic brain injury (TBI), which can lead to muscle contracture, joint stiffness, reduced range of movement, broken skin and pain. Treatments for spasticity include a range of pharmacological and non-pharmacological interventions, often used in combination. Management of spasticity following TBI varies from other clinical populations because of the added complexity of behavioural and cognitive issues associated with TBI...
November 22, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29153480/spatial-orientation-and-postural-control-in-patients-with-parkinson-s-disease
#11
E Pawlitzki, C Schlenstedt, N Schmidt, I Rotkirch, F Gövert, G Hartwigsen, K Witt
Postural instability is one of the most disabling and risky symptoms of advanced Parkinson's disease (PD). The purpose of this study was to investigate whether and how this is mediated by a centrally impaired spatial orientation. Therefore, we performed a spatial orientation study in 21 PD patients (mean age 68years, SD 8.5 years, 9 women) in a medically on condition and 21 healthy controls (mean age 68.9years, SD 5.5years, 14 women). We compared their spatial responses to the horizontal axis (Sakashita's visual target cancellation task), the vertical axis (bucket-test), the sagittal axis (tilt table test) and postural stability using the Fullerton Advanced Balance Scale (FAB)...
November 13, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29144131/twisting-and-tilting-1-1-bis-dialkylphosphino-ferrocene-bound-to-low-valent-tricarbonylmaganese-i-to-i
#12
K Michael Schäfer, Leonie Reinders, Jan Fiedler, Mark R Ringenberg
Recently we had reported the noninnocent behavior of 1,1'-bis(diphenylphosphino)ferrocene (dppf) in Fe(CO)3dppf [Ringenberg et al., Inorg. Chem., 2017, 56, 7501]. Moving to the left in the periodic table, HMn(CO)3(dRpf) where dRpf = dppf (1H) and 1,1'-bis(diisopropylphosphino)ferrocene (dippf) (2H) were synthesized. The hydride ligand was removed by protonation with [(Et2O)2H][B(Ar(F))4] ([B(Ar(F))4](-) = tetrakis[3,5-bis(trifluoromethyl)phenyl]borate), resulting in the rapid evolution of H2 followed by the formation of an Fe→Mn interaction...
November 16, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29122127/fluoroscopic-iliosacral-screw-placement-made-safe
#13
Nadomir Gusic, Igor Grgorinic, Ivica Fedel, Domagoj Lemac, Nado Bukvic, Matko Gusic, Tedi Cicvaric, Zvonimir Lovric
AIM: Unstable posterior pelvic ring injuries should be stabilised successfully by percutaneous iliosacral screwing. The intervention takes place under intraoperative fluoroscopic guidance. The inlet and outlet views are crucial and are performed by tilting the image intensifier. Safely interpreting fluoroscopic views can be challenging in certain clinical scenarios. We demonstrated on a series of patients howpreoperative CT scans can be used to anticipate the appropriate intraoperative inlet and outlet fluoroscopic views and positioning of the patient on the operating table, thereby avoiding possible operating table obstacles...
November 2017: Injury
https://www.readbyqxmd.com/read/29090359/oblique-retroperitoneal-approach-for-lumbar-interbody-fusion-from-l1-to-s1-in-adult-spinal-deformity
#14
Ki-Tack Kim, Dae-Jean Jo, Sang-Hyun Lee, Eun-Min Seo
In recent years, with advancements in surgical techniques and instrumentation, the lateral lumbar interbody fusion is being used increasingly as an alternative procedure to anterior approach. In this study, we illustrated a oblique retroperitoneal approach for lumbar interbody fusion with one incision site and tilting of the operation table in adult spinal deformity and evaluate the radiographical findings and clinical outcomes of patients treated using this technique. This study included 32 patients scheduled to undergo anterior and posterior long-level fusions for lumbar degenerative kyphosis or degenerative lumbar scoliosis...
October 31, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/29042001/recovery-from-vegetative-state-of-patients-with-a-severe-brain-injury-a-4-year-real-practice-prospective-cohort-study
#15
Alessio Baricich, A de Sire, E Antoniono, F Gozzerino, G Lamberti, C Cisari, M Invernizzi
Patients who have suffered severe traumatic or nontraumatic brain injuries can show a progressive recovery, transitioning through a range of clinical conditions. They may progress from coma to a vegetative state (VS) and/or a minimally conscious state (MCS). A longer duration of the VS is known to be related to a lower probability of emergence from it; furthermore, the literature seems to lack evidence of late improvements in these patients. This real-practice prospective cohort study was conducted in inpatients in a VS following a severe brain injury, consecutively admitted to a vegetative state unit (VSU)...
July 2017: Functional Neurology
https://www.readbyqxmd.com/read/29027688/preoperative-ultrasonographic-assessment-of-the-anterior-pelvic-plane-for-personalized-total-hip-replacement
#16
Andrzej Kochman, Adrian Goral, Josef Kozak, Wojciech Marek, Monika Morawska-Kochman, Marek Synder
OBJECTIVES: Correct positioning of the acetabular component is a key factor in minimizing the risk of dislocation after total hip replacement (THR) surgery. A "safe" orientation of the cup is usually defined by 2 angles measured between its geometric axis and the anterior pelvic plane. However, in the current state-of-the-art approach to THR surgery, the intraoperative orientation of the anterior pelvic plane cannot be measured. Even less is known about the functional orientation of the pelvis, which determines the postoperative orientation of the cup during the patient's everyday activities...
October 13, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29023991/correlation-of-head-up-tilt-table-test-time-interval-with-future-risk-of-recurrent-syncope
#17
Bhanwar L Ranwa, Priti K, Sajal Gupta
BACKGROUND: Head-up tilt table test (HUTT) is widely used for investigation of syncope and presyncope. Time required for positive response has a probable relationship to the sensitivity of neural reflex mechanism underlying syncope. METHODS: We evaluated patients with history of syncope. Group A included patients with recurrent syncope defined as 2 or more episodes of syncope and group B included those with 1 episode of syncope. Time required for the test to become positive in both the groups was analyzed...
October 10, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29019905/bezold-jarisch-reflex-occurred-in-a-pediatric-patient-with-giant-intra-abdominal-teratoma-during-induction-of-anesthesia-a-case-report
#18
Kai-Ming Yuan, Shu-Ying Fu, Jun Li, Wang-Ning Shangguan, Qing-Quan Lian
RATIONALE: Bezold-Jarisch reflex (BJR) occurs when the cardioinhibitory receptors in the walls of ventricles are activated by various stimuli, with typical features of bradycardia, vasorelaxation, and hypotension. This reflex usually happens in parturient intrathecal anesthesia, as a result of decreased venous return by compression of inferior vena cava, but it is only rarely reported during general anesthesia. PATIENT CONCERNS: Severe bradycardia and hypotension, indicating BJR, occurred during the induction of general anesthesia in a 3-month-old female child with giant intra-abdominal teratoma...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28986003/postural-tachycardia-in-hypermobile-ehlers-danlos-syndrome-a-distinct-subtype
#19
Mitchell G Miglis, Brittany Schultz, Srikanth Muppidi
INTRODUCTION: It is not clear if patients with postural tachycardia syndrome (POTS) and Ehlers-Danlos syndrome (hEDS) differ from patients with POTS due to other etiologies. We compared the results of autonomic testing and healthcare utilization in POTS patients with and without hEDS. METHODS: Patients with POTS+hEDS (n=20) and POTS controls without hypermobility (n=20) were included in the study. All patients underwent autonomic testing, and the electronic medical records were reviewed to determine the number and types of medications patients were taking, as well as the number of outpatient, emergency department, and inpatient visits over the prior year...
October 2, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28960795/gastric-myoelectrical-and-neurohormonal-changes-associated-with-nausea-during-tilt-induced-syncope
#20
G L Heyer, L H Boles, R A Harvey, M J Cismowski
BACKGROUND: Nausea is a common prodromal symptom of neurally mediated syncope, but the biological factors linking nausea with syncope have not been studied. We aimed to characterize nausea during tilt-induced syncope by exploring related changes in gastric myoelectrical activity and plasma epinephrine, norepinephrine, and vasopressin concentrations across study phases of recumbency, tilt, syncope, and recovery. METHODS: Electrogastrographic and plasma hormone changes were compared between patients with tilt-induced syncope and nausea (n = 18) and control subjects (n = 6) without symptoms or hemodynamic changes during tilt-table testing...
September 27, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
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