Why the study?
What are the electrocardiographic consequences of experimentally produced left posterior fascicular block in canine and primate hearts?
Population
3 baboons and 3 dogs
Comparison
Experimentally produced left posterior… vs Baseline (before block)
Design
Preclinical
Authors
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Calls for diagnostic caution in ECG assessment of fascicular blocks; extends animal findings but leaves clinical translation open.
What are the electrocardiographic consequences of experimentally produced left posterior fascicular block in canine and primate hearts?
Experimental left posterior fascicular block produces specific ECG changes including altered R/S ratio, delayed intrinsic deflection, and QRS axis rotation, highlighting the need for diagnostic caution.
Watt et al. (1969) studied this question.
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