RT Journal
A1 Haber E
T1 AUtomatic detection and recording of cardiac arrhythmias
JF Journal of the American Medical Association
JO Journal of the American Medical Association
YR 1959
FD August 8
VO 170
IS 15
SP 1782
OP 1785
DO 10.1001/jama.1959.03010150026007
UL http://dx.doi.org/10.1001/jama.1959.03010150026007
AB The cardiac monitor here described is a portable instrument used in connection with a standard electrocardiograph. From this source the monitor receives impulses which are amplified and interpreted, actuate the recording mechanism, cause an alarm to sound, and can, optionally, start up an electrical cardiac stimulator. Five cases illustrate its operation in patients with episodes of ventricular asystole, asymptomatic changes in intraventricular conduction, a paroxysm of bigeminal rhythm, an episode of extreme nodal bradycardia, and bouts of asymptomatic paroxysmal ventricular tachycardia. In a sixth patient the instrument recorded a sudden change from a sinus rhythm at 65 to a nodal rhythm at 80 beats per minute. This sort of continuous monitoring has evident advantages over intermittent observation.