Feasibility of subcutaneous ECG leads for synchronized timing of a counterpulsation device.

Warren, Sean

doi:10.18297/etd/1533

Cited by 2 publications

(4 citation statements)

References 10 publications

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“…49,53 The pump body is to be placed in the pacemaker-like pocket in the infraclavicular fossa of the right side of the patient and connected to the subclavian artery with a single short graft. 48,53,54…”

Section: Devices Reviewmentioning

confidence: 99%

A review of implantable pulsatile blood pumps: Engineering perspectives

Khir

Kütting

et al. 2020

Int J Artif Organs

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It has been reported that long-term use of continuous-flow mechanical circulatory support devices (CF-MCSDs) may induce complications associated with diminished pulsatility. Pulsatile-flow mechanical circulatory support devices (PF-MCSDs) have the potential of overcoming these shortcomings with the advance of technology. In order to promote in-depth understanding of PF-MCSD technology and thus encourage future mechanical circulatory support device innovations, engineering perspectives of PF-MCSD systems, including mechanical designs, drive mechanisms, working principles, and implantation strategies, are reviewed in this article. Some emerging designs of PF-MCSDs are introduced, and possible elements for next-generation PF-MCSDs are identified.

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Section: Devices Reviewmentioning

confidence: 99%

A review of implantable pulsatile blood pumps: Engineering perspectives

Khir

Kütting

et al. 2020

Int J Artif Organs

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“…These additional devices and lead wires severely burden LVAD patients, who are already required to carry an external controller and batteries (17). To enable patients to move freely and to eliminate the various external noise and motion artifacts, ECG electrodes and wires may be substituted with implantable electrodes and wires set on ventricular muscle (20)(21)(22).…”

mentioning

confidence: 99%

mentioning

confidence: 99%

“…Although accurate detection of abnormal heartbeat is usually accomplished with a conventional electrocardiogram (ECG), the conventional ECG requires many electrodes and long lead wires that are susceptible to noise from the LVAD (15)(16)(17)(18)(19). These additional devices and lead wires severely burden LVAD patients, who are already required to carry an external controller and batteries (17). To enable patients to move freely and to eliminate the various external noise and motion artifacts, ECG electrodes and wires may be substituted with implantable electrodes and wires set on ventricular muscle (20)(21)(22).…”

mentioning

confidence: 99%

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Detection of Premature Ventricular Contractions on a Ventricular Electrocardiogram for Patients With Left Ventricular Assist Devices

2014

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The ventricular electrocardiogram (v-ECG) was developed for long-term monitoring of heartbeats in patients with a left ventricular assist device (LVAD) and does not normally have the functionality necessary to detect additional heart irregularities that can progress to critical arrhythmias. Although the v-ECG has the benefits of physiological optimization and counterpulsation control, when abnormal heartbeats occur, the v-ECG does not show the distinct abnormal waveform that enables easy detection of an abnormal heartbeat among normal heartbeats on the conventional ECG. In this study, the v-ECGs of normal and abnormal heartbeats are compared with each other with respect to peak-to-peak voltage, area, and maximal slopes, and a new method to detect abnormal heartbeats is suggested. In a series of animal experiments with three porcine models (Yorkshire pigs weighing 30-40 kg), a v-ECG and conventional ECG were taken simultaneously during LVAD perfusion. Clinical experts found 104 abnormal heartbeats from the saved conventional ECG data and confirmed that the other 3159 heartbeats were normal. Almost all of the abnormal heartbeats were premature ventricular contractions (PVCs), and there was short-term tachycardia for 3 s. A personal computer was used to automatically detect abnormal heartbeats with the v-ECG according to the new method, and its results were compared with the clinicians' results. The new method found abnormal heartbeats with 90% accuracy, and less than 15% of the total PVCs were missed.

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Feasibility of subcutaneous ECG leads for synchronized timing of a counterpulsation device.

Cited by 2 publications

References 10 publications

A review of implantable pulsatile blood pumps: Engineering perspectives

A review of implantable pulsatile blood pumps: Engineering perspectives

Detection of Premature Ventricular Contractions on a Ventricular Electrocardiogram for Patients With Left Ventricular Assist Devices

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