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"Vagal Stimulation" OR "Vagal Maneuver" OR "Valsalva Maneuver" OR "Carotid Sinus Massage"

Jacquie Baker, Kurt Kimpinski
BACKGROUND: In evaluating autonomic dysfunction, the autonomic reflex screen (ARS) is an established set of standardized tests to evaluate the presence and severity of autonomic dysfunction. Our laboratory previously reported normative data on 121 healthy individuals; however, the sample size in older individuals was reduced compared to other age groups. Therefore, the objective of the current study was to provide updated normative values representative of young, middle aged and older individuals from Southwestern Ontario...
December 5, 2018: Canadian Journal of Physiology and Pharmacology
Tsia-Shu Lo, Sandy Chua, Yiap Loong Tan, Ma Clarissa Patrimonio, Leng Boi Pue
OBJECTIVE: To compare the ultrasonographic positional changes of mid-urethral sling(MUS) tape in relation to symphysis pubis, and the different clinical outcomes among women who underwent MUS insertion with MiniArcTM or MonarcTM for the treatment of stress urinary incontinence 3 years after. MATERIALS AND METHODS: A retrospective follow-up study on patients with clinically confirmed stress urodynamic incontinence and urodynamic stress incontinence who had undergone MiniArc or Monarc surgery...
2018: PloS One
Le Zhou, Gianlorenzo Dionigi, Alessandro Pontin, Antonella Pino, Ettore Caruso, Che-Wei Wu, Hui Sun, Ralph P Tufano, Hoon Yub Kim
We evaluate the role of intraoperative neuromonitoring (IONM) in thyroidectomy performed for Graves' disease (GD) with an emphasis on recurrent laryngeal nerve (RLN) management and completeness of resection. The study is a retrospective series comprising 55 thyroidectomy (control group) versus 82 procedures with intermittent IONM (I-IONM) and 72 by means of continuous IONM (C-IONM). In the control group the laryngeal nerves have been identified by visualization solely. In the I-IONM group both vagal nerve (VN) and RLN have been localized and monitored during thyroid resection...
March 2019: Journal of Clinical & Translational Endocrinology
A E Velcea, S Mihaila Baldea, D Muraru, L P Badano, D Vinereanu
Neck venous malformations and their potentially life-threatening complications are rarely reported in the available literature. Cases of aneurysmal or hypo-plastic jugular vein thrombosis associated with systemic embolization have not been frequently reported. We present the case of a 60-year-old male, without any known risk factors for thromboembolic disease, admitted for sudden onset dyspnea. The physical examination was remarkable for a right lateral cervical mass, expanding with Valsalva maneuver. Thoracic CT with contrast established the diagnosis of bilateral pulmonary embolism and raised the suspicion of superior vena cava and right atrial thrombosis...
December 1, 2018: Echo Research and Practice
Mario Habek, Tomislav Mutak, Bojana Nevajdić, Dunja Pucić, Luka Crnošija, Magdalena Krbot Skorić
The aim of the study is to investigate differences in non-standard adrenergic baroreflex sensitivity (BRS) indices in patients with different phenotypes of multiple sclerosis (pwMS) and healthy controls (HC). Retrospective analysis of types of systolic blood pressure (BP) curves during Valsalva maneuver (VM) [balanced (BAR), augmented (AAR) and suppressed (SAR) autonomic responses] and adrenergic baroreflex sensitivity (BRSa) measured with BRSa1 , α-BRSa and β-BRSa in patients with clinically isolated syndrome (CIS), relapsing remitting multiple sclerosis (RRMS), progressive multiple sclerosis (PMS) and HC...
November 23, 2018: Acta Neurologica Belgica
Cristina López, Miriam Gómez-Roso, José Ángel García-Pedraza, María Luisa Martín, Asunción Morán, Mónica García-Domingo
Although depression and cardiovascular diseases are related, the role of antidepressants, as fluoxetine (increasing serotonin levels), within cardiac regulation remains unclear. We aimed to determine whether fluoxetine modifies the pharmacological profile of serotonergic influence on vagal cardiac outflow. Rats were treated with fluoxetine (10 mg/; p.o.) for 14 days or equivalent volumes of drinking water (control group); then, they were pithed and prepared for vagal stimulation. Bradycardic responses were obtained by electrical stimulation of the vagal fibers (3, 6, and 9 Hz) or i...
November 21, 2018: Canadian Journal of Physiology and Pharmacology
Denise Drummond Hayes
No abstract text is available yet for this article.
December 2018: Nursing
M K Van de Waarsenburg, M I J Withagen, F van den Noort, J H Schagen van Leeuwen, C H van der Vaart
OBJECTIVES: The primary objective of this study was to confirm our previous observation that hiatal dimensions and mean echogenicity of the puborectalis muscle (MEP) were statistically significant different at 12 weeks gestation in women who delivered by a caesarean section (CS) due to failure to progress (FTP), compared to women who delivered vaginally. The secondary objective was to assess the association between the echogenicity of the cervix and the vastus lateralis muscle and mode of delivery...
November 21, 2018: Ultrasound in Obstetrics & Gynecology
Panagiotis Antiochos, Brahim Harbaoui, Olivier Muller, Jürg Schläpfer
No abstract text is available yet for this article.
2018: Kardiologia Polska
Elisabete Silva, Marco Parente, Sofia Brandão, Teresa Mascarenhas, Renato Natal Jorge
To better understand the disorders in the pelvic cavity associated with the pelvic floor muscles (PFM) using computational models, it is fundamental to identify the biomechanical properties of these muscles. For this purpose, we implemented an optimization scheme, involving a genetic algorithm (GA) and an inverse finite element analysis (FEA), in order to estimate the material properties of the pubovisceralis muscle (PVM). The datasets of five women were included in this noninvasive analysis. The numerical models of the PVM were built from static axial magnetic resonance (MR) images, and the hyperplastic Mooney-Rivlin constitutive model was used...
January 1, 2019: Journal of Biomechanical Engineering
Satu Rajala, Teemu Ahmaniemi, Harri Lindholm, Kiti Muller, Tapio Taipalus
The objective of this study was to measure ballistocardiogram (BCG) based time intervals and compare them with systolic blood pressure values. Electrocardiogram (ECG) and BCG signals of six subjects sitting in a chair were measured with a ferroelectret film sensor. Time intervals between ECG R peak and BCG I and J waves were calculated to obtain RJ, RI and IJ intervals. The time intervals were modified with two cardiovascular provocations, controlled breathing and Valsalva maneuver. The controlled breathing changed all the time intervals (RJ, RI and IJ) whereas the Valsalva maneuver mainly caused variations in the RJ and RI intervals...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Joohyun Seo, Charles G Sodini, Hae-Seung Lee
This work presents non-invasive evaluation of the arterial blood pressure (ABP) waveform during the Valsalva maneuver. Ultrasound scanning is conducted to acquire blood flow and arterial distension signals. Motion-tolerant ultrasound measurement schemes are employed by using two wide rectangular transducers. Pulse pressure (PP) estimated at the common carotid artery is compared to that of a finger waveform measured by a volume clamping device. The changes of PP are correlated between the two measurements. A more depressed dicrotic notch during the Valsalva strain is observed, and beat-to-beat variations of PP and a pulse rate caused by respiration and baroreflex is observed during the control...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Teemu Ahmaniemi, Satu Rajala, Harri Lindholm, Tapio Taipalus, Kiti Muller
Many studies dealing with blood pressure modeling are evaluated based on a single type of provocation. This paper investigates widely used provocations such as controlled breathing, mental arithmetic and Stroop tests, Valsalva maneuver, cold pressor and muscle tension and combines them in a versatile laboratory protocol. The protocol was tested in an experiment where pulse arrival time (PAT) and heart rate (HR) were measured with chest ECG and finger PPG sensors and blood pressure (BP) with continuous fingercuff monitor...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Sohan L Solanki, Jeson R Doctor, Savi J Kapila, Anuja Jain, Malini Joshi, Vijaya P Patil
Background: Anteroposterior (AP) diameter of internal jugular vein (IJV) and its relative position with carotid artery (CA) varies in the triangle formed by two heads of sternocleidomastoid muscle, which is the site of insertion of needle for IJV cannulation. This study assessed the maximum AP diameter of the IJV in supine and Trendelenburg positions and during Valsalva maneuver (supine position) at the apex, middle, and base of the triangle and to study the relationship of the IJV with the CA...
October 2018: Saudi Journal of Anaesthesia
Laurence Rocher, Jean-Luc Gennisson, Jérôme Barranger, Antoine Rachas, Aline Criton, Vincent Izard, Michele Bertolloto, Marie-France Bellin, Jean-Michel Correas
BACKGROUND: Varicocele is among the most common causes of male infertility because of various mechanism, including hypoxia. PURPOSE: To evaluate testicular vascularization (TV) with ultrasensitive Doppler before and during the Valsalva maneuver (VM) and correlate TV changes to varicocele's spermatic venous reflux graduated by color Doppler. MATERIAL AND METHODS: From January to February 2016, 69 men (135 testis) referred for scrotal ultrasound were prospectively enrolled...
November 5, 2018: Acta Radiologica
Reena Kumari Jha, Amrita Acharya, Ojashwi Nepal
INTRODUCTION: The Autonomic nervous system is responsible for regulation and integration of visceral functions. Disturbance of autonomic nervous system play crucial role in pathogenesis and clinical course of many diseases. In the present study deep breathing test and valsalva maneuver have been described to monitor parasympathetic function genderwise. METHODS: A cross-sectional study was conducted among 100 subjects, aged 18-25 years, from May to November 2017, in exercise physiology laboratory, Kathmandu University School of Medical Sciences, Chaukot, Kavre...
March 2018: JNMA; Journal of the Nepal Medical Association
Rachel Clifford, Desiree Robson, Christoph Gross, Francesco Moscato, Heinrich Schima, Paul Jansz, Peter S Macdonald, Christopher S Hayward
BACKGROUND: cfLVADs result in a significant reduction in aortic valve (AV) opening, which have been associated with several complications. Reliable monitoring of AV opening is needed to determine whether pump speed adjustment may be able to minimize adverse outcomes. METHODS: AV status was recorded continuously by echocardiography for 4 minutes in 3 states in 18 HeartWare HVAD patients: 2 minutes at rest, and 1 minute each following Valsalva maneuver and supine leg-raising...
October 30, 2018: Artificial Organs
Ritsuko Kohno, Wayne O Adkisson, Barry Ls Detloff, Scott Sakaguchi, David G Benditt
BACKGROUND: Syncope triggered by swallowing is a well-known but uncommon condition that has been the focus of case reports but is otherwise largely unstudied. To better understand swallow syncope we examined heart rate (HR) and blood pressure (BP) changes during swallowing in clinically suspected swallow syncope patients and asymptomatic control subjects. METHODS: The study population comprised 4 individuals with a history suggesting swallow syncope (3 men, 53±14...
October 26, 2018: Journal of Cardiovascular Electrophysiology
Camilla Rocchi, Fabio Placidi, Claudio Liguori, Chiara Del Bianco, Benedetta Lauretti, Marina Diomedi, Antonio Pisani, Nicola B Mercuri, Francesca Izzi
OJECTIVE: To investigate cardiovascular and sudomotor autonomic functions in patients with idiopathic rapid eye movement (REM) sleep behavior disorder (iRBD) during wakefulness compared to patients with Parkinson's disease (PD) and healthy subjects. METHODS: Drug-naïve iRBD patients, PD patients and healthy controls underwent cardiovascular function tests including head-up tilt test (HUTT), Valsalva maneuver, deep breathing, hand grip, and cold face. Heart rate variability (HRV) analysis was performed in the frequency domain using an autoregressive algorithm in the rest supine condition and during HUTT...
September 17, 2018: Sleep Medicine
Roderik J S Gerritsen, Guido P H Band
Contemplative practices, such as meditation and yoga, are increasingly popular among the general public and as topics of research. Beneficial effects associated with these practices have been found on physical health, mental health and cognitive performance. However, studies and theories that clarify the underlying mechanisms are lacking or scarce. This theoretical review aims to address and compensate this scarcity. We will show that various contemplative activities have in common that breathing is regulated or attentively guided...
2018: Frontiers in Human Neuroscience
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