Journal: PLoS ONE

Article Title: Aging-associated sinus arrest and sick sinus syndrome in adult zebrafish

doi: 10.1371/journal.pone.0232457

Figure Lengend Snippet: A, Different ECG waveform with distinct P, R, S, and T waves when probes were at a different location relative to the heart (red dots). We recommend aligning the positive probe to the heart (ii), whereby the ECG waveform is similar to that in humans. B, Microsurgery was conducted to open the pericardium sac and thus eliminate noise and enhance amplitude of the waveforms by about 10-fold. C, Change in heart rate with surgery. bpm indicates beats per minute; WT, wild-type.

Article Snippet: Compared with existing zebrafish ECG systems that use needle probes invasively inserted into the zebrafish dermis to capture the signal [ , , , ], here, we deployed non-invasive electrodes that were applied to the surface of the heart using the commercially available iWORX ECG recording system.

Techniques:

Journal: PLoS ONE

Article Title: Aging-associated sinus arrest and sick sinus syndrome in adult zebrafish

doi: 10.1371/journal.pone.0232457

Figure Lengend Snippet: A, Representative electrocardiogram (ECG) for a single fish without anesthesia. Chamber temperature was changed from 22°C to 32°C. B, Heart rate significantly increased with increased chamber temperature, which is independent of anesthesia. Inset shows in-house temperature-controlled chamber. C, Representative ECG for a single fish before and after anesthethia. Temperature was controlled at 28°C. Noise caused by gill movement is reduced after 6 minutes of anesthesia. D, Heart rate to the time after anesthesia. E, Schematic of protocol for conducting ECG with the iWorx system. bpm indicates beats per minute.

Article Snippet: Compared with existing zebrafish ECG systems that use needle probes invasively inserted into the zebrafish dermis to capture the signal [ , , , ], here, we deployed non-invasive electrodes that were applied to the surface of the heart using the commercially available iWORX ECG recording system.

Techniques:

Journal: PLoS ONE

Article Title: Aging-associated sinus arrest and sick sinus syndrome in adult zebrafish

doi: 10.1371/journal.pone.0232457

Figure Lengend Snippet: A, Electrocardiographic (ECG) waveforms with distinguishable P, QRS, and T waves were similar in zebrafish, mice, and humans. B, Heart rate variation (HRV) was measured by quantifying average PP intervals every 30 beats in a representative fish, mouse, and human. HR in the zebrafish was similar to that in a human but was much higher than that in a mouse. HRV in zebrafish was larger than that in both a mouse and a human. C, HRV was measured by quantifying PP i /PP i+1 (ratio of 2 adjacent PP intervals) in a representative fish, mouse, and human. The ratio in a zebrafish was much larger than that in both a mouse and a human.

Article Snippet: Compared with existing zebrafish ECG systems that use needle probes invasively inserted into the zebrafish dermis to capture the signal [ , , , ], here, we deployed non-invasive electrodes that were applied to the surface of the heart using the commercially available iWORX ECG recording system.

Techniques:

Journal: PLoS ONE

Article Title: Aging-associated sinus arrest and sick sinus syndrome in adult zebrafish

doi: 10.1371/journal.pone.0232457

Figure Lengend Snippet: A, Summary of electrocardiographic (ECG) data from 59 wild-type (WT) and 16 Tg(SCN5A-D1275N) fish at 1 year old. Different cut-offs of PP intervals were used to determine an episode of SA. B, Two wild-type (WT) fish and 3 Tg(SCN5A-D1275N) fish that were considered to have SA when 1.2 seconds was used as cut-off, but not if 1.6 seconds was used as cut-off, were further analyzed by reviewing the raw ECG. We considered WT fish 1 and 2 and Tg fish 2 as SA-positive, and others were not because of low frequency of long PP interval. An PP interval more than 1.5 seconds was recommended as a criterion to define SA in zebrafish. C, Representative SA episodes in a WT fish and a Tg(SCN5A-D1275N) fish. epm indicates episodes per minute.

Article Snippet: Compared with existing zebrafish ECG systems that use needle probes invasively inserted into the zebrafish dermis to capture the signal [ , , , ], here, we deployed non-invasive electrodes that were applied to the surface of the heart using the commercially available iWORX ECG recording system.

Techniques:

Journal: PLOS ONE

Article Title: Randomized crossover trial of 2-week Garment electrocardiogram with dry textile electrode to reveal instances of post-ablation recurrence of atrial fibrillation underdiagnosed during 24-hour Holter monitoring

doi: 10.1371/journal.pone.0281818

Figure Lengend Snippet: ECG, electrocardiogram.

Article Snippet: Three months after catheter ablation, patients started ECG monitoring using the device that had been allocated to their group at randomization (2 weeks using the hitoe Medical Electrode II (Toray Medical Co., Ltd., Tokyo, Japan) with the hitoe ECG Recorder EV-301(Parama-Tech Co., Ltd., Fukuoka, Japan) and hitoe Medical Leads II (Toray Medical Co., Ltd., Tokyo, Japan) in the Garment ECG group or the disposable electrode NC-105CM (NIHON KOHDEN CORPORATION, Tokyo, Japan) with Long-term Recorder RAC-3103 (NIHON KOHDEN CORPORATION, Tokyo, Japan) and Patient Cables BJ-322D (NIHON KOHDEN CORPORATION, Tokyo, Japan) in the Holter group.

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Journal: PLOS ONE

Article Title: Randomized crossover trial of 2-week Garment electrocardiogram with dry textile electrode to reveal instances of post-ablation recurrence of atrial fibrillation underdiagnosed during 24-hour Holter monitoring

doi: 10.1371/journal.pone.0281818

Figure Lengend Snippet: A, The hitoe ® dry electrode is sewn into a stretchy fabric used for sportswear, for a wearable ECG unit that can be washed. The unit can be put on and taken off easily by patients, facilitating near-continuous monitoring. B, The hitoe Medical Leads II: Lead wires are pre-installed on the wearable device and conduct the signal detected by the electrodes to the electrocardiograph. The pressure adjustment function allows the wearer to obtain the proper position and adherence, enabling comfortable extended monitoring. C, The hitoe Medical Electrode II: Electrodes are made of an electrically conductive textile material called hitoe. The polyester nanofiber fabric is coated with a dielectric polymer to prevent rash even with prolonged use. D, The hitoe ECG Recorder EV-301: The recorder is a compact lightweight Holter electrocardiograph, capable of continuous recording for up to 2 weeks without recharging. ECG, electrocardiogram.

Article Snippet: Three months after catheter ablation, patients started ECG monitoring using the device that had been allocated to their group at randomization (2 weeks using the hitoe Medical Electrode II (Toray Medical Co., Ltd., Tokyo, Japan) with the hitoe ECG Recorder EV-301(Parama-Tech Co., Ltd., Fukuoka, Japan) and hitoe Medical Leads II (Toray Medical Co., Ltd., Tokyo, Japan) in the Garment ECG group or the disposable electrode NC-105CM (NIHON KOHDEN CORPORATION, Tokyo, Japan) with Long-term Recorder RAC-3103 (NIHON KOHDEN CORPORATION, Tokyo, Japan) and Patient Cables BJ-322D (NIHON KOHDEN CORPORATION, Tokyo, Japan) in the Holter group.

Techniques:

Journal: PLOS ONE

Article Title: Randomized crossover trial of 2-week Garment electrocardiogram with dry textile electrode to reveal instances of post-ablation recurrence of atrial fibrillation underdiagnosed during 24-hour Holter monitoring

doi: 10.1371/journal.pone.0281818

Figure Lengend Snippet: A, AF occurrences in 12 relapsed patients. B, Data from 5 patients who had AF on the first day of Garment ECG measurements. * Of the 12 patients, 4 also showed AF on the Holter 24-hour ECG. AF, atrial fibrillation; ECG, electrocardiogram.

Article Snippet: Three months after catheter ablation, patients started ECG monitoring using the device that had been allocated to their group at randomization (2 weeks using the hitoe Medical Electrode II (Toray Medical Co., Ltd., Tokyo, Japan) with the hitoe ECG Recorder EV-301(Parama-Tech Co., Ltd., Fukuoka, Japan) and hitoe Medical Leads II (Toray Medical Co., Ltd., Tokyo, Japan) in the Garment ECG group or the disposable electrode NC-105CM (NIHON KOHDEN CORPORATION, Tokyo, Japan) with Long-term Recorder RAC-3103 (NIHON KOHDEN CORPORATION, Tokyo, Japan) and Patient Cables BJ-322D (NIHON KOHDEN CORPORATION, Tokyo, Japan) in the Holter group.

Techniques:

Journal: PLOS ONE

Article Title: Randomized crossover trial of 2-week Garment electrocardiogram with dry textile electrode to reveal instances of post-ablation recurrence of atrial fibrillation underdiagnosed during 24-hour Holter monitoring

doi: 10.1371/journal.pone.0281818

Figure Lengend Snippet: AF, atrial fibrillation; ECG, electrocardiogram.

Article Snippet: Three months after catheter ablation, patients started ECG monitoring using the device that had been allocated to their group at randomization (2 weeks using the hitoe Medical Electrode II (Toray Medical Co., Ltd., Tokyo, Japan) with the hitoe ECG Recorder EV-301(Parama-Tech Co., Ltd., Fukuoka, Japan) and hitoe Medical Leads II (Toray Medical Co., Ltd., Tokyo, Japan) in the Garment ECG group or the disposable electrode NC-105CM (NIHON KOHDEN CORPORATION, Tokyo, Japan) with Long-term Recorder RAC-3103 (NIHON KOHDEN CORPORATION, Tokyo, Japan) and Patient Cables BJ-322D (NIHON KOHDEN CORPORATION, Tokyo, Japan) in the Holter group.

Techniques:

Journal: Biomedical Engineering Letters

Article Title: Wearable EEG and beyond

doi: 10.1007/s13534-018-00093-6

Figure Lengend Snippet: Comparison of two different electrode configurations shows how the presence/positioning of a reference electrode can distort the signals collected from a test electrode. a Test set up using a two electrode electro-physiological recorder. Electrodes in the blue test case (1 and 2) are placed on the wrist. Electrodes in the red test case (A and B) are on the wrist and chest. No third reference electrode is present when using the camNtech actiwave. b Wrist only recordings are very low in amplitude with no clear QRS complex. c With the chest electrode present a QRS complex apears at the wrist

Article Snippet: ECG recordings are then performed at different points in time, here using a camNtech actiwave two electrode ECG recorder [ 58 ].

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