ARMY HEART MONITOR-MODEL II,

Abstract

Model II of the Army Heart Monitor (formerly called the Cardiac Arrest Indicator) is an electronic device that monitors the electrocardiogram (ECG) and makes distinctive indications when cardiac standstill or ventricular fibrillation occurs. This model differentiates ventricular fibrillation from the other myocardial waveforms on the basis of the duty cycle (a parameter related to the area under the curve) of the ECG signals. Laboratory and clinical tests have shown duty cycle to be a useful fibrillation-sensing parameter. However, false indications of ventricular fibrillation by Model II have shown the need for further improvements in the fibrillation-sensing scheme. Nevertheless, in demonstrating an improved means of sensing ventricular fibrillation, in demonstrating an operable automatic gain control, and in allowing the commencement of clinical evaluation, the design aims for Model II were realized. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1969
Accession Number
AD0695645

Entities

People

  • Charles W. Ragsdale
  • Edward A. Wright

Organizations

  • Harry Diamond Laboratories

Tags

DTIC Thesaurus Topics

  • Automatic
  • Automatic Gain Control
  • Cardiac Arrest
  • Cardiac Arrhythmias
  • Cardiovascular System
  • Electrocardiography
  • Health Services
  • Heart
  • Indicators
  • Test And Evaluation
  • Waveforms

Readers

  • Aerospace Test and Evaluation
  • Cardiovascular Physiology
  • Computational Modeling and Simulation

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems