Cardiac pacemakers

1990 ◽  
Keyword(s):  
Cardiac Pacemakers

Recent Advances in Pacing and Defibrillation

2011 ◽  
Vol 3 (1) ◽  
pp. 74
Author(s):  
Kathy L Lee ◽  
Keyword(s):  
Cardiac Death ◽  
Electronic Devices ◽  
Implantable Defibrillators ◽  
Cardiac Pacemakers ◽  
Cardiac Implantable Electronic Devices ◽  
Treatment And Prevention ◽  
Recent Advances ◽  
Pacing Lead ◽  
Leadless Pacing ◽  
Device Complications

Cardiac pacemakers have been the standard therapy for patients with bradyarrhythmias for several decades. The pacing lead is an integral part of the system, serving as a conduit for the delivery of energy pulses to stimulate the myocardium. However, it is also the Achilles’ heel of pacemakers, being the direct cause of most device complications both acutely during implant and chronically years afterwards. Leadless pacing with ultrasound-mediated energy has been demonstrated in animals and humans to be safe and feasible in acute studies. Implantable defibrillators revolutionised the treatment and prevention of sudden cardiac death. Subcutaneous implantable defibrillators have been under development for more than 10 years. A permanent implantable system has been shown to be feasible in treating induced and spontaneous ventricular tachyarrhythmias. These developments and recent advances in pacing and defibrillation will arouse further interest in the research and development of leadless cardiac implantable electronic devices.

Overview of wireless implantable energy supply and communication technology

2020 ◽  
Vol 14 ◽  
Author(s):  
Shuang Zhang ◽  
Yuping Qin ◽  
Jiang-ming Kuang ◽  
Jining Yang ◽  
Jin Xu ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Energy Supply ◽  
Working Environment ◽  
Normal Operation ◽  
Medical Systems ◽  
Cardiac Pacemakers ◽  
Implantable Medical Devices ◽  
Best Available Technologies ◽  
Sufficient Energy ◽  
External Signals

: With the development of integrated circuits and microelectronics, integrated and miniaturized implantable medical devices are increasingly used in modern medical technologies, e.g., cardiac pacemakers, vasodilators, and cochlear implants. However, the normal operation of these devices is inseparable from the availability of a sufficient energy supply and the bidirectional transmission of internal and external signals. Due to the limitation of the working environment of sensors, there is only a small space for most implanted electronic devices, which is a challenge faced by existing technology. In this paper, current wireless implantable energy supply and communication technologies are reviewed to determine the best available technologies, thereby providing a reference for method selection in designing implantable medical systems.

scholarly journals Access to MRI for patients with cardiac pacemakers and implantable cardioverter defibrillators

Open Heart ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. e001598
Author(s):  
Christopher Pieri ◽  
Anish Bhuva ◽  
Russell Moralee ◽  
Aderonke Abiodun ◽  
Deepa Gopalan ◽  
...  
Keyword(s):  
Supply And Demand ◽  
Complication Rates ◽  
Similar Data ◽  
Implantable Cardioverter Defibrillators ◽  
Cardiac Pacemakers ◽  
Survey Tool ◽  
Mr Conditional ◽  
Mri Scans ◽  
Implantation Rates ◽  
The Impact

ObjectiveTo determine provision of MRI for patients with cardiac implantable electronic devices (CIEDs; pacemakers and defibrillators) in England, to understand regional variation and assess the impact of guideline changes.MethodsRetrospective data related to MRI scans performed in patients with CIED over the preceding 12 months was collected using a structured survey tool distributed to every National Health Service Trust MRI unit in England. Data were compared with similar data from 2014/2015 and with demand (estimated from local CIED implantation rates and regional population data by sustainability and transformation partnerships (STPs)).ResultsResponses were received from 212 of 223 (95%) hospitals in England. 112 (53%) MRI units’ scan patients with MR-conditional CIEDs (10% also scan non-MR conditional devices), compared with 46% of sites in 2014/2015. Total annual scan volume increased over fourfold between 2014 and 2019 (1090 to 4896 scans). There was widespread geographical variation, with five STPs (total population >3·5 million representing approximately 25 000 patients with CIED) with no local provision. There was no correlation between local demand (CIED implantation rates) and MRI provision (scan volume). Complication rates were extremely low with three events nationally in 12 months (0·06% CIED–MRI scans).ConclusionsProvision of MRI for patients with CIEDs in England increased over fourfold in 4 years, but an estimated 10-fold care gap remains. Almost half of hospitals and 1 in 10 STPs have no service, with no relationship between local supply and demand. Availability of MRI for patients with non-MR conditional devices, although demonstrably safe, remains limited.

scholarly journals Strategy for Safe Performance of Extrathoracic Magnetic Resonance Imaging at 1.5 Tesla in the Presence of Cardiac Pacemakers in Non–Pacemaker-Dependent Patients

Circulation ◽  
2006 ◽  
Vol 114 (12) ◽  
pp. 1285-1292 ◽  
Author(s):  
Torsten Sommer ◽  
Claas P. Naehle ◽  
Alexander Yang ◽  
Volkert Zeijlemaker ◽  
Matthias Hackenbroch ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Cardiac Pacemakers ◽  
Safe Performance

Temporary Cardiac Pacemakers

1975 ◽  
Vol 75 (4) ◽  
pp. 586-591
Author(s):  
ELIZABETH HAHN WINSLOW ◽  
LYNNE BROOKS MARINO
Keyword(s):  
Cardiac Pacemakers

Electroshock therapy and cardiac pacemakers

1969 ◽  
Vol 118 (6) ◽  
pp. 931-937 ◽  
Author(s):  
C.Roger Youmans ◽  
Gleb Bourianoff ◽  
Daniel C. Allensworth ◽  
Winston L. Martin ◽  
John R. Derrick
Keyword(s):  
Cardiac Pacemakers ◽  
Electroshock Therapy

Endoscopic Diathermy in Patients With Cardiac Pacemakers

Endoscopy ◽  
1998 ◽  
Vol 30 (06) ◽  
pp. 544-547 ◽  
Author(s):  
A. Veitch ◽  
P. Fairclough
Keyword(s):  
Cardiac Pacemakers
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