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https://www.readbyqxmd.com/read/29058222/accuracy-of-the-garmin-920-xt-hrm-to-perform-hrv-analysis
#1
Johan Cassirame, Romain Vanhaesebrouck, Simon Chevrolat, Laurent Mourot
Heart rate variability (HRV) analysis is widely used to investigate autonomous cardiac drive. This method requires periodogram measurement, which can be obtained by an electrocardiogram (ECG) or from a heart rate monitor (HRM), e.g. the Garmin 920 XT device. The purpose of this investigation was to assess the accuracy of RR time series measurements from a Garmin 920 XT HRM as compared to a standard ECG, and to verify whether the measurements thus obtained are suitable for HRV analysis. RR time series were collected simultaneously with an ECG (Powerlab system, AD Instruments, Castell Hill, Australia) and a Garmin XT 920 in 11 healthy subjects during three conditions, namely in the supine position, the standing position and during moderate exercise...
October 20, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/29057492/qtc-prolongation-during-ciprofloxacin-and-fluconazole-combination-therapy-prevalence-and-associated-risk-factors
#2
Florine A Berger, Nico Monadian, Natasja M S de Groot, Bart Santbergen, Heleen van der Sijs, Matthijs L Becker, Annoek E C Broers, Teun van Gelder, Patricia M L A van den Bemt
AIM (S): Ciprofloxacin and fluconazole combination therapy is frequently used as prophylaxis for and treatment of infections in patients with haematological malignancies. However, both drugs are known to prolong the QTc-interval, which is a serious risk factor for Torsade de Pointes (TdP). Therefore, the aim of this study was to assess the prevalence of QTc-prolongation during ciprofloxacin and fluconazole use. The secondary objective was to determine associated risk factors of QTc-prolongation in these patients...
October 22, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29055890/utility-of-prehospital-electrocardiogram-characteristics-as-prognostic-markers-in-out-of-hospital-pulseless-electrical-activity-arrests
#3
Michael L Ho, Mathieu Gatien, Christian Vaillancourt, Veronica Whitham, Ian G Stiell
BACKGROUND: It is unclear if there are predictors of survival, including ECG characteristics, that can guide resuscitative efforts in pulseless electrical activity (PEA) cardiac arrests. We studied the predictive potential of presenting prehospital ECGs on survival for patients with out-of-hospital cardiac arrest (OHCA) with PEA. METHODS: We studied prehospital ECGs of patients with OHCA prospectively enrolled between June 2007 and November 2009 at the Ottawa/OPALS (Ontario Prehospital Advanced Life Support Study) site of the Resuscitation Outcomes Consortium PRIMED study (Prehospital Resuscitation using an IMpedance valve and Early versus Delayed analysis)...
October 21, 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/29055746/atrial-fibrillation-and-arterial-hypertension
#4
REVIEW
M S Kallistratos, L E Poulimenos, A J Manolis
Atrial fibrillation (AF) and arterial hypertension frequently coexist, not only because arterial hypertension increases the incidence of new onset of atrial fibrillation, but also because those two entities share common risk factors and conditions that increase the incidence of both. Thus, in our daily clinical practice we will often have to manage and treat those patients. In order to assess and treat these patients, proper blood pressure (BP) measurement as well as detection of atrial fibrillation is mandatory...
October 18, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29054563/early-diastolic-septal-movement-in-patients-with-myocarditis
#5
M Jeserich, B Merkely, P Schlosser, S Kimmel, G Pavlik, J Biermann
AIM: To evaluate early diastolic septal relaxation as a parameter in the diagnostic workup via cardiovascular magnetic resonance imaging (CMRI) in patients with myocarditis. MATERIALS AND METHODS: Early diastolic septal movement was evaluated (EDS) prospectively via frame-by-frame analysis in 255 consecutive patients with presenting signs of myocarditis and in 64 controls matched 4:1 for gender and age. ECG-triggered, T2-weighted, fast spin echo triple inversion recovery sequences and late gadolinium enhancement were obtained, as well as left ventricular (LV) function and dimensions in patients and controls...
October 17, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/29054505/biomonitor-2-pilot-study-early-experience-with-implantation-of-the-biotronik-biomonitor-2-implantable-cardiac-monitor
#6
Sze-Yuan Ooi, Ben Ng, Suresh Singarayar, Kevin Hellestrand, Peter Illes, Uwais Mohamed, Shakeeb Razak, Rukshen Weerasooriya
BACKGROUND: The BioMonitor 2 Pilot Study assessed the implantation procedure, the sensing amplitude and the remote monitoring transmission success rate of the second generation implantable cardiac monitor, the BioMonitor 2 (Biotronik, Berlin, Germany). METHODS: This was a prospective, multi-centre, single-arm, non-randomised study involving seven operators in five sites across Australia. Data were collected at implantation, during clinic visits at 1 week and 1 month post-implantation, and through wireless remote monitoring...
October 6, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29054440/external-validation-of-heart-type-fatty-acid-binding-protein-high-sensitivity-cardiac-troponin-and-electrocardiography-as-rule-out-for-acute-myocardial-infarction
#7
Christopher B Van Hise, Jaimi H Greenslade, William Parsonage, Martin Than, Joanna Young, Louise Cullen
OBJECTIVE: To externally validate a clinical decision rule incorporating heart fatty acid binding protein (h-FABP), high-sensitivity troponin (hs-cTn) and electrocardiogram (ECG) for the detection of acute myocardial infarction (AMI) on presentation to the Emergency Department. We also investigated whether this clinical decision rule improved identification of AMI over algorithms incorporating hs-cTn and ECG only. DESIGN AND METHODS: This study included data from 789 patients from the Brisbane ADAPT cohort and 441 patients from the Christchurch TIMI RCT cohort...
October 17, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/29054254/ecg-based-myocardial-infarction-detection-using-hybrid-firefly-algorithm
#8
Padmavathi Kora
BACKGROUND AND OBJECTIVE: Myocardial Infarction (MI) is one of the most frequent diseases, and can also cause demise, disability and monetary loss in patients who suffer from cardiovascular disorder. Diagnostic methods of this ailment by physicians are typically invasive, even though they do not fulfill the required detection accuracy. METHODS: Recent feature extraction methods, for example, Auto Regressive (AR) modelling; Magnitude Squared Coherence (MSC); Wavelet Coherence (WTC) using Physionet database, yielded a collection of huge feature set...
December 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29054179/the-impact-of-systems-of-care-on-pharmacoinvasive-management-with-streptokinase-the-subgroup-analysis-of-the-tn-stemi-programme
#9
Deep Chandh Raja, Vijayakumar Subban, Suma M Victor, George Joseph, Viji Samuel Thomson, Kumaresan Kannan, Justin Paul Gnanaraj, Ganesh Veerasekar, Jose G Thenpally, Nandhini Livingston, Brahmajee K Nallamothu, Thomas Alexander, Ajit S Mullasari
OBJECTIVES: We evaluated the impact of implementation of the TN-STEMI programme on various characteristics of the pharmacoinvasive group by comparing clinical as well as angiographic outcomes between the pre- and post-implementation groups. METHODS: The TN-STEMI programme involved 2420 patients of which 423 patients had undergone a pharmacoinvasive strategy of reperfusion. Of these, 407 patients had a comprehensive blinded core-lab evaluation of their angiograms post-lysis and clinical evaluation of various parameters including time-delays and adverse cardio- and cerebro-vascular events at 1year...
September 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/29053451/spatially-resolved-mr-compatible-doppler-ultrasound-proof-of-concept-for-triggering-of-diagnostic-quality-cardiovascular-mri-for-function-and-flow-quantification-at-3t
#10
Lindsey A Crowe, Gibran Manasseh, Aneta Chmielewski, Anne-Lise Hachulla, Daniel Speicher, Andreas Greiser, Hajo Muller, Thomas De Perrot, Jean-Paul Vallee, Rares Salomir
OBJECTIVES: We demonstrate the use of a Magnetic-Resonance (MR)-compatible ultrasound (US) imaging probe using spatially-resolved Doppler for diagnostic quality cardiovascular MR imaging as an initial step towards hybrid US/MR fetal imaging. METHODS: A newly developed technology for a dedicated MR-compatible phased array ultrasound-imaging probe acquired pulsed color Doppler carotid images, which were converted in near-real time to a trigger signal for cardiac cine and flow quantification MRI...
October 17, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/29052467/the-effect-of-level-of-injury-and-physical-activity-on-heart-rate-variability-following-spinal-cord-injury
#11
Athanasios Kyriakides, Dimitrios Poulikakos, Angeliki Galata, Dimitrios Konstantinou, Elias Panagiotopoulos, Elisabeth Chroni
OBJECTIVE/BACKGROUND: To assess frequency domain heart rate variability (HRV) parameters at rest and in response to postural autonomic provocations in individuals with spinal cord injury (SCI) and investigate the autonomic influences on the heart of different physical activities. DESIGN: Cross-sectional study. METHODS: Ten subjects with complete cervical SCI and fourteen subjects with complete low thoracic SCI were prospectively recruited from the community and further divided in sedentary and physically active groups, the latter defined as regular weekly 4 hour physical activity for the preceding 3 months...
October 20, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29051738/early-seizure-detection-based-on-cardiac-autonomic-regulation-dynamics
#12
Jonatas Pavei, Renan G Heinzen, Barbora Novakova, Roger Walz, Andrey J Serra, Markus Reuber, Athi Ponnusamy, Jefferson L B Marques
Epilepsy is a neurological disorder that causes changes in the autonomic nervous system. Heart rate variability (HRV) reflects the regulation of cardiac activity and autonomic nervous system tone. The early detection of epileptic seizures could foster the use of new treatment approaches. This study presents a new methodology for the prediction of epileptic seizures using HRV signals. Eigendecomposition of HRV parameter covariance matrices was used to create an input for a support vector machine (SVM)-based classifier...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29050844/monitoring-the-corrected-qt-in-the-acute-care-setting-a-comparison-of-the-12%C3%A2-lead-electrocardiogram-and-bedside-monitor
#13
James A Chenoweth, Aaron M Hougham, Daniel K Colby, Jonathan B Ford, Jordan Sandhu, Timothy E Albertson, Mark E Sutter
INTRODUCTION: Prolongation of the QT interval is a well-recognized complication associated with many commonly used medications. Emergency Department monitoring of the corrected QT (QTc) both before and after medication administration is typically performed using the 12‑lead electrocardiogram (ECG). The purpose of this study is to compare the QTc reported on the 12‑lead ECG to that reported by single brand of bedside monitor. METHODS: A convenience sample of emergency department patients over the age of 18 undergoing bedside monitoring and who had an ECG ordered by their treating physician were enrolled...
October 7, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29050736/-complicated-transcatheter-aortic-valve-endocarditis-with-abscess-and-pseudoaneurysm-value-of-the-ecg-gated-multidetector-computed-tomography-angiography
#14
S Pichard, G Gibault-Genty, A Vienet-Legue, N Baron, R Convers-Domart, J L Georges, B Livarek
A 80-year-old man was admitted to catheterization room for an acute infero-lateral ST-elevation myocardial infarction (STEMI). Coronary angiography showed a thrombotic occlusion of the second left marginal branch, and normal other coronary arteries. The thrombo-embolic mechanism of the STEMI, and the infectious context in this patient who had had a transcatheter aortic valve implantation (TAVI) two months earlier, led us to suspect a bioprosthesis endocarditis. It was confirmed by transthoracic and transoesophageal echocardiography, which showed an aortic-mitral curtain abscess and aortic bioprosthesis vegetations, associated to Enterococcus faecalis bacteriemia...
October 16, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/29050702/relationship-between-a-fragmented-qrs-and-microalbuminuria-in-patients-with-type-2-diabetes-mellitus
#15
Sukru Cetin, Suleyman Sezai Yıldız, Emrah Erkan Mazı, Kudret Keskin, Gokhan Cetinkal, Ahmet Gurdal, Umut Karabay, Kadriye Orta Kilickesmez
INTRODUCTION: Microalbuminuria (MAU), a complication of diabetes, is closely related to cardiovascular events. A fragmented QRS (fQRS) in the electrocardiogram (ECG) was found to be strongly associated to cardiovascular morbidity and mortality. OBJECTIVE: The aim of this study was to assess the association between a fQRS and MAU in patients with type 2 diabetes mellitus (T2DM). PATIENTS AND METHODS: One hundred and twenty-seven patients (mean age, 50...
November 2017: Endocrinología, diabetes y nutrición
https://www.readbyqxmd.com/read/29050564/a-missense-variant-in-plec-increases-risk%C3%A2-of-atrial-fibrillation
#16
Rosa B Thorolfsdottir, Gardar Sveinbjornsson, Patrick Sulem, Anna Helgadottir, Solveig Gretarsdottir, Stefania Benonisdottir, Audur Magnusdottir, Olafur B Davidsson, Sridharan Rajamani, Dan M Roden, Dawood Darbar, Terje R Pedersen, Marc S Sabatine, Ingileif Jonsdottir, David O Arnar, Unnur Thorsteinsdottir, Daniel F Gudbjartsson, Hilma Holm, Kari Stefansson
BACKGROUND: Genome-wide association studies (GWAS) have yielded variants at >30 loci that associate with atrial fibrillation (AF), including rare coding mutations in the sarcomere genes MYH6 and MYL4. OBJECTIVES: The aim of this study was to search for novel AF associations and in doing so gain insights into the mechanisms whereby variants affect AF risk, using electrocardiogram (ECG) measurements. METHODS: The authors performed a GWAS of 14,255 AF cases and 374,939 controls, using whole-genome sequence data from the Icelandic population, and tested novel signals in 2,002 non-Icelandic cases and 12,324 controls...
October 24, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29049921/estrus-resynchronization-in-ewes-with-unknown-pregnancy-status
#17
Vladinis O Miranda, Fernando C Oliveira, Jenniffer H Dias, Sergio F Vargas Júnior, Karina L Goularte, Manoel F Sá Filho, Ocilon G de Sá Filho, Hernan Baldassarre, Arnaldo D Vieira, Thomaz Lucia, Bernardo G Gasperin
Although fixed-time artificial insemination (FTAI) protocols are available for sheep, estrus resynchronization has not been previously reported. The objectives of this study were to evaluate the effect of estrus resynchronization with exogenous progestogen on endogenous progesterone levels and to compare pregnancy rates after two consecutive estrus synchronizations in ewes. In Experiment 1, ewes (n = 20) received an intravaginal device (IVD) containing 60 mg medroxyprogesterone acetate (MPA) for 10 days...
October 10, 2017: Theriogenology
https://www.readbyqxmd.com/read/29049249/cardiac-conduction-disturbances-and-aging-in-patients-with-duchenne-muscular-dystrophy
#18
Kazuhiko Segawa, Hirofumi Komaki, Madoka Mori-Yoshimura, Yasushi Oya, Koichi Kimura, Hisateru Tachimori, Naohiro Kato, Masayuki Sasaki, Yuji Takahashi
The majority of patients with Duchenne muscular dystrophy (DMD) have electrocardiographic abnormalities, but the clinical significance of conduction disturbances remains unclear. This study aimed to evaluate age-dependent cardiac conduction disturbances by electrocardiogram (ECG) to identify risks of complete atrioventricular (AV) block in this patient population.In total, 47 patients with DMD (age, ≥20 ys) who recorded ECGs at our hospital from July 2015 to June 2016 were included in this study. The PR interval and QRS duration in their previous ECGs were analyzed retrospectively...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29049164/electrocardiogram-in-patients-with-acute-inferior-myocardial-infarction-due-to-occlusion-of-circumflex-artery
#19
Qun Li, De-Zhao Wang, Bu-Xing Chen
To investigate the diagnostic value of electrocardiographic (ECG) ST-segment in acute inferior myocardial infarction (AIMI) caused by the left circumflex branch (LCX).A total of 240 clinical cases with AIMI in our hospital were retrospectively analyzed. All of them had received percutaneous coronary intervention (PCI) within 12 hours after symptom onset. The clinical features, ECG manifestations, and coronary artery lesion characteristics of the patients were collected.The right coronary artery (RCA) was shown to be the infarct-related artery (IRA) in 177 patients, while LCX was responsible for AIMI in 63 cases...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29048110/morphometric-and-morphologic-parameters-of-the-heart-in-healthy-alouatta-guariba-clamitans-cabrera-1940
#20
Murilo Gomes de Soutello Charlier, Maurício Gianfrancesco Filippi, Carolina Hagy Girotto, Vanessa Lanes Ribeiro, Carlos Roberto Teixeira, Maria Lúcia Gomes Lourenço, Luiz Carlos Vulcano
BACKGROUND: This study aimed at assessing the heart function of one neotropical primate (Alouatta guariba clamitans) kept in captivity using radiography, electrocardiogram (ECG) and Doppler echocardiography. METHODS: Ten adult healthy howler monkeys (A. g. clamitans) were evaluated under general anaesthesia. Vertebral Heart Scores (VHS) were obtained from radiographic studies. Ejection fraction, shortening fraction of left ventricle, left atrial/aortic root ratio, ascending aortic diameter, peak velocity of pulmonary, mitral, tricuspid and aortic blood flow and other values were measured by Doppler echocardiography...
October 19, 2017: Journal of Medical Primatology
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