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Comparison of teaching the basic electrocardiographic concept of frontal plane QRS axis using the classical versus the orderly electrocardiogram limb lead displays.

Abstract：

:This study compares the effectiveness of teaching the calculation of frontal plane QRS axis with the use of the classical versus the orderly electrocardiographic limb lead display. Eighty-three students from two environments were randomized into two groups and were taught to determine frontal plane axis with one of the methods. The accuracy and time to determine the axis were tested on 10 electrocardiograms. In the United States the group using the classical display achieved 4.2 (+/-2.7) correct answers, whereas those using the orderly method achieved 6.8 (+/-3.0) (p = 0.0006). The classical group used 9.2 (+/-2.8) minutes to complete the test, whereas the orderly group needed 7.2 (+/-2.0) minutes (p = 0.015). The results achieved in Sweden were similar. The use of the orderly electrocardiographic limb lead display results in greater diagnostic accuracy in less time than the classical display when determining the frontal plane QRS axis.

journal_name

Am Heart J

journal_title

American heart journal

authors

Pahlm US,O'Brien JE,Pettersson J,Pahlm O,White T,Maynard C,Wagner GS

doi

10.1016/s0002-8703(97)70020-6

subject

Has Abstract

pub_date

1997-12-01 00:00:00

pages

1014-8

issue

6

eissn

0002-8703

issn

1097-6744

pii

S0002870397001233

journal_volume

134

pub_type

临床试验,杂志文章,随机对照试验

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