JAVAD MALEK, M.D.; ARTHUR GLUSHIEN, M.D.
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To the editor: Continuous electrocardiographic monitoring of the heart with a portable magnetic tape recorder was developed by Holter in 1957 (1). This device has been widely used for detection of transient arrhythmias and conduction disturbances during monitoring through 10 or more hours while the patient engages in his usual activity. Some advantages and limitations of the Holter Avionics instrument have been pointed out by Hinkle (2).
Recently a tracing obtained with the Holter Avionics recorder seemingly showed supraventricular tachycardia at a rate of 300 per minute in a 50-year-old-man (Figure 1, Strip A). The patient did not complain of
MALEK J, GLUSHIEN A. Artifacts in Portable ECG Monitoring. Ann Intern Med. ;77:1004. doi: 10.7326/0003-4819-77-6-1004_1
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Published: Ann Intern Med. 1972;77(6):1004.
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