scholarly journals Heart Rate Monitor Instead of Ablation? Atrioventricular Nodal Re-Entrant Tachycardia in a Leisure-Time Triathlete: 6-Year Follow-Up

Diagnostics ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 391 ◽  
Author(s):  
Robert Gajda

This study describes a triathlete with effort-provoked atrioventricular nodal re-entrant tachycardia (AVNRT), diagnosed six years ago, who ineffectively controlled his training load via heart-rate monitors (HRM) to avoid tachyarrhythmia. Of the 1800 workouts recorded for 6 years on HRMs, we found 45 tachyarrhythmias, which forced the athlete to stop exercising. In three of them, AVNRT was simultaneously confirmed by a Holter electrocardiogram (ECG). Tachyarrhythmias occurred in different phases (after the 2nd–131st minutes, median: 29th minute) and frequencies (3–8, average: 6.5 times/year), characterized by different heart rates (HR) (150–227 beats per minute (bpm), median: 187 bpm) and duration (10–186, median: 40 s). Tachyarrhythmia appeared both unexpectedly in the initial stages of training as well as quite predictably during prolonged submaximal exercise—but without rigid rules. Tachyarrhythmias during cycling were more intensive (200 vs. 162 bpm, p = 0.0004) and occurred later (41 vs. 10 min, p = 0.0007) than those during running (only one noticed but not recorded during swimming). We noticed a tendency (p = 0.1748) towards the decreasing duration time of tachycardias (2014–2015: 60 s; 2016–2017: 50 s; 2018–later: 37 s). The amateur athlete tolerated the tachycardic episodes quite well and the ECG test and echocardiography were normal. In the studied case, the HRM was a useful diagnostic tool for detecting symptomatic arrhythmia; however, no change in the amount, phase of training, speed, or duration of exercise-stimulated tachyarrhythmia was observed.

Author(s):  
J.N. Marchant ◽  
A.R.Rudd

The scientific assessment of farm animal welfare requires an amalgam of different measures of both physiology and behaviour. Behavioural measures are relatively easy to obtain but non-invasive measures of internal physiology are somewhat harder to achieve. An increase in the use of applied physiology in training regimes of human athletes, has led to an improved technology of heart rate monitors, making the measurement of heart rates painless and easy to record.The objective of this experiment was to use a human heart rate monitor to investigate differences in heart rate response at feeding between sows housed in three different dry sow housing conditions. Schouten et al (1991) have demonstrated differences in heart rate response at feeding between loose-housed and tethered sows. In the study reported here, stall-housed sows were compared with sows housed in small groups and sows housed in a large group with an Electronic Feeder System (EFS).


Diagnostics ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 867 ◽  
Author(s):  
Robert Gajda

Heart rate monitors (HRMs) are important for measuring heart rate, which can be used as a training parameter for healthy athletes. They indicate stress-related heart rhythm disturbances—recognized as an unexpected increase in heart rate (HR)—which can be life-threatening. Most HRMs confuse arrhythmias with artifacts. This study aimed to assess the usefulness of electrocardiogram (ECG) recordings from sport HRMs for endurance athletes, coaches, and physicians, compared with other basic and hypothetical functions. We conducted three surveys among endurance athletes (76 runners, 14 cyclists, and 10 triathletes), 10 coaches, and 10 sports doctors to obtain information on how important ECG recordings are and what HRM functions should be improved to meet their expectations in the future. The respondents were asked questions regarding use and hypothetical functions, as well as their preference for HRM type (optical/strap). Athletes reported distance, pace, instant HR, and oxygen threshold as being the four most important functions. ECG recording ranked eighth and ninth for momentary and continuous recording, respectively. Coaches placed more importance on ECG recording. Doctors ranked ECG recording the highest. All participants preferred optical HRMs to strap HRMs. Research on the improvement and implementation of HRM functions showed slightly different preferences for athletes compared with coaches and doctors. In cases where arrhythmia was suspected, the value of the HRM’s ability to record ECGs during training by athletes and coaches increased. For doctors, this is the most desirable feature in any situation. Considering the expectations of all groups, continuous ECG recording during training will significantly improve the safety of athletes.


1996 ◽  
Vol 1996 ◽  
pp. 193-193
Author(s):  
P.J. Baynes ◽  
K. Graham ◽  
E.J. Hunter ◽  
H.J. Guise ◽  
R.H.C. Penny

Heart rate has been successfully recorded in sheep, deer and pigs (Baldock and Sibly, (1986) Price, Sibly and Davies, (1993) Webster et al, 1995). This work has shown that resting heart rate can increase in stressful situations. Being able to record heart rates of group-housed sows would complement behavioural observations, if it could be shown that the presence of the monitor did not alter group behaviour. The aim of this study was to assess in a group of active sows, the effect of the presence of a heart rate monitor on behaviour.


2017 ◽  
Vol 32 (6) ◽  
pp. 691-693 ◽  
Author(s):  
Oscar Thabouillot ◽  
Kevin Bostanci ◽  
Francois Bouvier ◽  
Nicolae Dumitrescu ◽  
Maria Stéfuriac ◽  
...  

AbstractThis is a case report of a 45-year-old man who reported complete amnesia during the very first kilometer of a 10-km run. He was wearing a heart rate monitor (HRM). The interrogation of his HRM watch showed 200 bpm tachycardia beginning in the first kilometer and increasing up to 220 bpm during the last kilometer. The patient was asked to wear a Holter-monitor (Holter Research Laboratory; Helena, Montana USA) electrocardiogram (ECG) while practicing a training session. This examination allowed for the diagnosis of an adrenergic paroxysmal atrial fibrillation (AF) with an impressive auriculo-ventricular conduction over 260 bpm. This case highlights that non-medical devices, such as connected watches, can be helpful to diagnose arrhythmias.ThabouillotO, BostanciK, BouvierF, DumitrescuN, StéfuriacM, PauleP, RocheNC. Syncope during competitive events: interrogating heart rate monitor watches may be useful!Prehosp Disaster Med. 2017;32(6):691–693


2018 ◽  
Vol 4 (1) ◽  
pp. 14 ◽  
Author(s):  
Yaya Suryana ◽  
Rafi Aziz

<p><em>Abstrak</em> - <strong>Elektrokardiogram (EKG) adalah sinyal fisiologis yang dihasilkan dari aktivitas listrik jantung. Sinyal ini direkam menggunakan elektrokardiograf. Dalam penelitian ini dilakukan sistem pemantauan denyut jantung dengan menggunakan tiga sensor elektroda timah. Memroses aplikasi perangkat lunak yang digunakan untuk menampilkan informasi yang dihasilkan dari modul. Perangkat keras front-end adalah modul Heart Rate Monitor AD8232, mikrokontroler ATmega328 Arduino mini pro, dan elektroda. Peralatannya memiliki dimensi kecil sehingga bisa dibawa kemana saja menjadi perangkat yang dpt dipakai. Sistem ini diuji menggunakan FLUKE 410PS ECG Simulator yang bisa menghasilkan sinyal yang menyerupai detak jantung. Pengolah IDE digunakan untuk menyediakan antarmuka pengguna Beats Per Minute (BPM).</strong></p><p><strong> </strong></p><p><strong><em>Kata Kunci</em> - </strong><em>Electrocardiogram (ECG), 3 Lead Elektrocardiograph, Arduino, FLUKE 410PS.</em></p><p><em> </em></p><p><em>Abstract </em>- <strong>Electrocardiogram (ECG) is a physiological signal that is produced from heart electricity activities. This signal is recorded using electrocardiograph. In this research a heart rate monitoring system using three lead electrodes sensor has been implemented. Processing software applications was used to display information generated from the module. The front-end hardware are Heart Rate Monitor module AD8232, ATmega328 microcontroller Arduino mini pro, and electrodes. The equipment has a small dimension so it can be brought anywhere to be a wearable devices. This system was tested using FLUKE 410PS ECG Simulator that can produce a signal resembling a heartbeat. Processing IDE was used to provide the Beats Per Minute (BPM) user interface</strong>.</p><p><strong> </strong></p><p><strong><em>Keywords</em></strong><em> - Electrocardiogram (ECG), 3 Lead Elektrocardiograph, Arduino, FLUKE 410PS.</em></p>


Author(s):  
Alice Haouzi ◽  
Haitham Khraishah ◽  
Jamie Diamond ◽  
Duane S Pinto

Abstract Background Ciguatera toxicity is a fish-borne illness that initially manifests with gastrointestinal symptoms, followed by bizarre neurological symptoms including heat-cold sensation alteration, peculiar feeling of loose teeth, and peripheral neuropathy. However, cardiac manifestations are rare and underreported in the literature. Case summary A 73-year-old man presented with symptomatic bradycardia and hypotension after ingestion of barracuda fish in Mexico. He received atropine and dopamine with subsequent improvement in his symptoms, but continued to experience peripheral neuropathic and other odd sensations. Four of his family members ingested the same fish and had similar symptoms. He was managed conservatively and did not require temporary or permanent pacing. Within 1 week from toxin exposure, bradycardia had improved. Heart rate was 40–50 b.p.m. at rest, and he was discharged with an ambulatory monitor. Heart rate had increased to 77 b.p.m. at 1-month follow-up on repeat electrocardiogram (ECG). Discussion Although the predominant manifestations of ciguatera toxicity are neurological, cardiac complications tend to be more acute and require attention. Unlike neurological symptoms, bradycardia and hypotension are short-lived, often resolving within a week. Treatment continues to be largely supportive, and patients may require temporary treatment with positive chronotropic agents such as atropine or dopamine.


Author(s):  
Lorin Weaver ◽  
Taylor Wooden ◽  
Jake Grazer

Introduction: In this day and age, technology is progressing faster than people know how to keep ahead of the advancements. The new era of technology and smartwatches can be a great benefit to healthcare systems around the world. They can be used for weight management, tracking aerobic exercise, and tracking heart rate. However, if smartwatches can be trusted to accurately help people in their everyday lives, then why aren’t doctors and trainers incorporating them into their outpatient instructions? Consequently, the purpose of this study is to observe the accuracy of Apple Watches and to assess if they are as reliable as the Polar Heart Monitors that can be found in exercise testing labs. Methods: Nine college-aged males and six females participated in the YMCA cycle submaximal test while wearing both a Polar Heart Rate Monitor (H10) and a series 3 or 4 Apple Watch to compare the accuracy of the Apple Watch device.  Heart rate and rating of perceived exertion were taken during each stage of testing. Paired sample t-tests were used to compare the heart rate readings in each stage. Results: There was no statistical difference between the Apple Watch heart rate reading and the Polar Heart Monitor (p > 0.05).Discussion: Based on the results regarding heart rate through the different stages of the YMCA submaximal test, it appears as though the Apple Watch is comparable to the chest strap monitor during cycling. Previous research has shown similar findings during exercise on a treadmill, indicating that the chest strap and Apple Watch measured similar heart rate values (Gillinov et al., 2017) . Based on the findings of this study, it appears Apple Watch heart rate technology is comparable to chest strap heart rate monitors during various modes of physical activity.


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