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ambulatory ECG monitoring

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https://www.readbyqxmd.com/read/28096204/atrial-fibrillation-diagnosis-timing-ambulatory-ecg-monitoring-utilization-and-risk-of-recurrent-stroke
#1
Gregory Y H Lip, Tina D Hunter, Maria E Quiroz, Paul D Ziegler, Mintu P Turakhia
BACKGROUND: The risk of recurrence after an initial ischemic stroke or transient ischemic attack (TIA) may be impacted by undiagnosed atrial fibrillation (AF). We therefore assessed the impact of AF diagnosis and timing on stroke/TIA recurrence rates in a large real-world sample of patients. METHODS AND RESULTS: Using commercial claims data (Truven Health Analytics MarketScan), we performed a retrospective cohort study of patients with an index stroke or TIA event recorded in years 2008 through 2011...
January 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28055987/heart-beat-classification-from-single-lead-ecg-using-the-synchrosqueezing-transform
#2
Christophe L Herry, Martin Frasch, Andrew Je Seely, Hau-Tieng Wu
The processing of ECG signal provides a wealth of information on cardiac function and overall cardiovascular health. While multi-lead ECG recordings are often necessary for a proper assessment of cardiac rhythms, they are not always available or practical, for example in fetal ECG applications. Moreover, a wide range of small non-obtrusive single-lead ECG ambulatory monitoring devices are now available, from which heart rate variability (HRV) and other health-related metrics are derived. Proper beat detection and classification of abnormal rhythms is important for reliable HRV assessment and can be challenging in single-lead ECG monitoring devices...
January 5, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28045723/rate-dependent-left-bundle-branch-block-in-an-ambulatory-surgery-patient-a-case-report
#3
Ashraf Farag, Justin Tsai, Sam Deeb, Deidre Putman-Garcia, John D Wasnick, Lydia A Conlay
A 52-year-old woman, ASA II (American Society of Anesthesia classification II) scheduled for cholecystectomy in an ambulatory center, exhibited a wide-complex tachycardia with ectopy on the monitor after induction with propofol and succinylcholine. Blood pressure remained stable; amiodarone was administered for presumed ventricular tachycardia. A 12-lead electrocardiogram (ECG) showed a new left bundle branch block (LBBB) at 98 beats per minute (bpm), which resolved when the heart rate slowed. Surgery was postponed, and both the LBBB and ectopy recurred frequently during the next 24 hours in the intensive care unit, particularly at heart rates >90 bpm...
December 30, 2016: A & A Case Reports
https://www.readbyqxmd.com/read/27986262/daily-energy-expenditure-and-its-relation-to-health-care-costs-in-patients-undergoing-ambulatory-electrocardiographic-monitoring
#4
Jason George, Rami Khoury Abdulla, Raymond Yeow, Anshul Aggarwal, Judith Boura, James Wegner, Barry A Franklin
Our increasingly sedentary lifestyle is associated with a heightened risk of obesity, diabetes, heart disease, and cardiovascular mortality. Using the recently developed heart rate index formula in 843 patients (mean ± SD age 62.3 ± 15.7 years) who underwent 24-hour ambulatory electrocardiographic (ECG) monitoring, we estimated average and peak daily energy expenditure, expressed as metabolic equivalents (METs), and related these data to subsequent hospital encounters and health care costs. In this cohort, estimated daily average and peak METs were 1...
November 23, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27941397/smartphone-based-electrocardiographic-and-cardiac-implantable-electronic-device-monitoring
#5
Suneet Mittal
The field of arrhythmia monitoring is changing rapidly. The rapid advent of technology in combination with marked improvements in cellular communication and an increased desire by patients to be actively engaged in their care has ushered in a new era of clinical care. Today, physicians need to think about their patients outside the traditional in-office setting. Two technologies that embody this changing landscape are smartphone-based electrocardiographic (ECG) monitors and remote monitoring of cardiac implantable electronic devices (CIEDs)...
November 17, 2016: Cardiology in Review
https://www.readbyqxmd.com/read/27929570/short-runs-of-atrial-arrhythmia-and-stroke-risk-a-european-wide-online-survey-among-stroke-physicians-and-cardiologists
#6
R T Tran, A J Rankin, A H Abdul-Rahim, G Y Lip, A C Rankin, K R Lees
A recording of = 30 seconds is required to diagnose paroxysmal atrial fibrillation when using ambulatory ECG monitoring. It is unclear if shorter runs are relevant with regards to stroke risk. Methods An online survey of cardiologists and stroke physicians was carried out to assess current management of patients with short runs of atrial arrhythmia within Europe. Results Respondents included 311 clinicians from 32 countries. To diagnose atrial fibrillation, 80% accepted a single 12-lead ECG and 36% accepted a single run of > 30 seconds on ambulatory monitoring...
June 2016: Journal of the Royal College of Physicians of Edinburgh
https://www.readbyqxmd.com/read/27922466/smartphone-based-electrocardiographic-and-cardiac-implantable-electronic-device-monitoring
#7
Suneet Mittal
The field of arrhythmia monitoring is changing rapidly. The rapid advent of technology in combination with marked improvements in cellular communication and an increased desire by patients to be actively engaged in their care has ushered in a new era of clinical care. Today, physicians need to think about their patients outside the traditional in-office setting. Two technologies that embody this changing landscape are smartphone-based electrocardiographic (ECG) monitors and remote monitoring of cardiac implantable electronic devices (CIEDs)...
January 2017: Cardiology in Review
https://www.readbyqxmd.com/read/27876841/accuracy-of-pulse-interval-timing-in-ambulatory-blood-pressure-measurement
#8
Sarah A Kane, James R Blake, Frank J McArdle, Philip Langley, Andrew J Sims
Blood pressure (BP) monitors rely on pulse detection. Some blood pressure monitors use pulse timings to analyse pulse interval variability for arrhythmia screening, but this assumes that the pulse interval timings detected from BP cuffs are accurate compared with RR intervals derived from ECG. In this study we compared the accuracy of pulse intervals detected using an ambulatory blood pressure monitor (ABPM) with single lead ECG. Twenty participants wore an ABPM for three hours and a data logger which synchronously measured cuff pressure and ECG...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27853165/clinical-and-prognostic-value-of-hypertensive-cardiac-damage-in-the-pamela-study
#9
REVIEW
Cesare Cuspidi, Carla Sala, Anna Casati, Michele Bombelli, Guido Grassi, Giuseppe Mancia
Because subclinical alterations in cardiovascular structure reflect cumulative damage induced by risk factors and represent an intermediate stage between risk factor exposure and cardiovascular events, this damage is regarded as a marker of increased cardiovascular risk in different clinical settings, including the general population. The Pressioni Monitorate e Loro Associazioni (PAMELA) is an originally designed research study aimed at assessing the normal values and prognostic significance of ambulatory and home blood pressure in a representative sample of the Northern Italian general population...
November 17, 2016: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/27847556/remote-electrocardiograph-monitoring-using-a-novel-adhesive-strip-sensor-a-pilot-study
#10
REVIEW
Charles J Bruce, Dorothy J Ladewig, Virend K Somers, Kevin E Bennet, Scott Burrichter, Christopher G Scott, Lyle J Olson, Paul A Friedman
The increase in health care costs is not sustainable and has heightened the need for innovative low cost effective strategies for delivering patient care. Remote monitoring holds great promise for preventing or shortening duration of hospitalization even while improving quality of care. We therefore conducted a proof of concept study to examine the quality of electrocardiograph (ECG) recordings obtained remotely and to test its potential utility in detecting harmful rhythms such as atrial fibrillation. We tested a novel adhesive strip ECG monitor and assessed the ECG quality in ambulatory individuals...
October 26, 2016: World Journal of Cardiology
https://www.readbyqxmd.com/read/27809773/electrocardiographic-and-echocardiographic-predictors-of-paroxysmal-atrial-fibrillation-detected-after-ischemic-stroke
#11
Maria A Baturova, Seth H Sheldon, Jonas Carlson, Peter A Brady, Grace Lin, Alejandro A Rabinstein, Paul A Friedman, Pyotr G Platonov
BACKGROUND: Detection of atrial fibrillation after ischemic stroke is challenging due to its paroxysmal nature. We aimed to assess predictors of paroxysmal atrial fibrillation using non-invasive surface ECG and transthoracic echocardiography to select candidates for atrial fibrillation screening. METHODS: Ischemic stroke patients without documented atrial fibrillation (n = 110, 67 ± 10 years, 40 female) and a control group of age- and gender-matched patients with history of paroxysmal atrial fibrillation prior to stroke (n = 55, 67 ± 10 years, 19 female) comprised the study sample...
November 3, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27714469/ambulatory-24-h-ecg-monitoring-and-cardiovascular-autonomic-assessment-for-the-screening-of-silent-myocardial-ischemia-in-elderly-type-2-diabetic-hypertensive-patients
#12
Daniele Bosone, Roberto Fogari, Matteo Cotta Ramusino, Natascia Ghiotto, Elena Guaschino, Annalisa Zoppi, Angela D'Angelo, Alfredo Costa
The aim of the study was to evaluate the usefulness of Holter monitoring for the detection of silent myocardial ischemia (SMI) in elderly type 2 diabetic patients with hypertension and the possible relationship between SMI and cardiovascular autonomic neuropathy (CAN). Two hundred and forty-three asymptomatic outpatients, aged 65-75 years, with type 2 diabetes and essential hypertension underwent 24-h ECG monitoring and 5 tests for the evaluation of both parasympathetic (heart rate variability, response to breath deeping, and Valsalva manoeuvre) and sympathetic (cold pressor test and orthostatic hypotension test) autonomic function...
October 6, 2016: Heart and Vessels
https://www.readbyqxmd.com/read/27708585/comparative-analysis-of-the-equivital-eq02-lifemonitor-with-holter-ambulatory-ecg-device-for-continuous-measurement-of-ecg-heart-rate-and-heart-rate-variability-a-validation-study-for-precision-and-accuracy
#13
Abimbola A Akintola, Vera van de Pol, Daniel Bimmel, Arie C Maan, Diana van Heemst
Background: The Equivital (EQ02) is a multi-parameter telemetric device offering both real-time and/or retrospective, synchronized monitoring of ECG, HR, and HRV, respiration, activity, and temperature. Unlike the Holter, which is the gold standard for continuous ECG measurement, EQO2 continuously monitors ECG via electrodes interwoven in the textile of a wearable belt. Objective: To compare EQ02 with the Holter for continuous home measurement of ECG, heart rate (HR), and heart rate variability (HRV). Methods: Eighteen healthy participants wore, simultaneously for 24 h, the Holter and EQ02 monitors...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27677526/effect-of-welding-fume-on-heart-rate-variability-among-workers-with-respirators-in-a-shipyard
#14
Bor-Cheng Han, I-Jung Liu, Hsiao-Chi Chuang, Chih-Hong Pan, Kai-Jen Chuang
Welding fume exposure is associated with heart rate variability (HRV) reduction. It is still unknown whether respirator can reduce effect of welding fume on HRV among welding workers in a shipyard. We recruited 68 welding workers with respirator and 52 welding workers without respirator to measure HRV indices, including standard deviation of normal-to-normal intervals (SDNN) and square root of the mean squared differences of successive intervals (r-MSSD) by ambulatory electrocardiographic (ECG). Personal exposure to particulate matter less than or equal to 2...
September 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27626806/optimizing-estimates-of-instantaneous-heart-rate-from-pulse-wave-signals-with-the-synchrosqueezing-transform
#15
Hau-Tieng Wu, Gregory F Lewis, Maria I Davila, Ingrid Daubechies, Stephen W Porges
BACKGROUND: With recent advances in sensor and computer technologies, the ability to monitor peripheral pulse activity is no longer limited to the laboratory and clinic. Now inexpensive sensors, which interface with smartphones or other computer-based devices, are expanding into the consumer market. When appropriate algorithms are applied, these new technologies enable ambulatory monitoring of dynamic physiological responses outside the clinic in a variety of applications including monitoring fatigue, health, workload, fitness, and rehabilitation...
October 17, 2016: Methods of Information in Medicine
https://www.readbyqxmd.com/read/27624333/twenty-four-hour-blood-pressure-profile-orthostatic-hypotension-and-cardiac-dysautonomia-in-elderly-type-2-diabetic-hypertensive-patients
#16
Alfredo Costa, Daniele Bosone, Matteo Cotta Ramusino, Natascia Ghiotto, Elena Guaschino, Annalisa Zoppi, Angela D'Angelo, Roberto Fogari
PURPOSE: The aim of this study was to evaluate the relationship between orthostatic hypotension (OH), defined as a decrease in systolic blood pressure (SBP) ≥20 mmHg and/or a decrease in diastolic blood pressure (DBP) ≥10 mmHg, and 24-h ambulatory BP profile in elderly hypertensive type 2 diabetic patients. METHODS: After a 2-week antihypertensive wash-out period, 200 hypertensive well-controlled diabetic outpatients, aged 65-75 years, underwent a clinical examination, including BP measurements, ECG, 24-h ABP monitoring (ABPM), an orthostatic test, and three tests for cardiovascular autonomic function assessment [deep breathing, heart rate (HR) variability, resting HR]...
December 2016: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/27585105/effect-of-ractopamine-hydrochloride-and-zilpaterol-hydrochloride-on-cardiac-electrophysiologic-and-hematologic-variables-in-finishing-steers
#17
Daniel A Frese, Christopher D Reinhardt, Steven J Bartle, David N Rethorst, Bhupinder Bawa, Justin D Thomason, Guy H Loneragan, Daniel U Thomson
OBJECTIVE To investigate the effects of dietary supplementation with the β-adrenoceptor agonists ractopamine hydrochloride and zilpaterol hydrochloride on ECG and clinicopathologic variables of finishing beef steers. DESIGN Randomized controlled trial. ANIMALS 30 Angus steers. PROCEDURES Steers were grouped by body weight and randomly assigned to receive 1 of 3 diets for 23 days: a diet containing no additive (control diet) or a diet containing ractopamine hydrochloride (300 mg/steer/d) or zilpaterol hydrochloride (8...
September 15, 2016: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/27576238/signal-quality-analysis-of-ambulatory-electrocardiograms-to-gate-false-myocardial-ischemia-alarms
#18
Mohamed Abdelazez, Patrick Quesnel, Adrian Chan, Homer Yang
: The objective of this study is to propose and validate an alarm gating system for a myocardial ischemia monitoring system that uses ambulatory electrocardiogram (AECG). The PeriOperative ISchemic Evaluation (POISE) study recommended the selective administration of β blockers to patients at risk of cardiac events following non-cardiac surgery. Patients at risk are identified by monitoring ST-segment deviations in the electrocardiogram (ECG); however, patients are encouraged to ambulate to improve recovery, which deteriorates the signal quality of the ECG leading to false alarms...
August 25, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27470989/potential-cost-effectiveness-of-ambulatory-cardiac-rhythm-monitoring-after-cryptogenic-stroke
#19
Jean Hai Ein Yong, Kednapa Thavorn, Jeffrey S Hoch, Muhammad Mamdani, Kevin E Thorpe, Paul Dorian, Mike Sharma, Andreas Laupacis, David J Gladstone
BACKGROUND AND PURPOSE: Prolonged ambulatory ECG monitoring after cryptogenic stroke improves detection of covert atrial fibrillation, but its long-term cost-effectiveness is uncertain. METHODS: We estimated the cost-effectiveness of noninvasive ECG monitoring in patients aged ≥55 years after a recent cryptogenic stroke and negative 24-hour ECG. A Markov model used observed rates of atrial fibrillation detection and anticoagulation from a randomized controlled trial (EMBRACE) and the published literature to predict lifetime costs and effectiveness (ischemic strokes, hemorrhages, life-years, and quality-adjusted life-years [QALYs]) for 30-day ECG (primary analysis) and 7-day or 14-day ECG (secondary analysis), when compared with a repeat 24-hour ECG...
September 2016: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27450311/baseline-elevation-and-reduction-in-cardiac-electrical-instability-assessed-by-quantitative-t-wave-alternans-in-patients-with-drug-resistant-epilepsy-treated-with-vagus-nerve-stimulation-in-the-aspiresr-e-36-trial
#20
Richard L Verrier, Bruce D Nearing, Bryan Olin, Paul Boon, Steven C Schachter
OBJECTIVE: Reports of cardiac arrhythmias and cardiac pathology at postmortem examination of patients with epilepsy suggest a possible cardiac component of risk for sudden unexpected death in epilepsy (SUDEP). T-wave alternans (TWA) is an established marker of cardiac electrical instability and risk for sudden death in patients with cardiovascular disease. We determined the TWA level before vagus nerve stimulation (VNS) system implantation and subsequently the effect of VNS on TWA in patients with drug-resistant epilepsy...
September 2016: Epilepsy & Behavior: E&B
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