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===Right atrial enlargement=== | ===Right atrial enlargement=== | ||
;Right atrial enlargement: P >2,5 mm in II / III and / or aVF | ;Right atrial enlargement is defined as either: | ||
[[Image:right_atrial_enlargement.jpg|thumb| | :P >2,5 mm in II / III and / or aVF | ||
[[Image:Rae.png|thumb| | :P >1,5 mm in V1. | ||
[[Image:right_atrial_enlargement.jpg|thumb| Right atrial enlargement]] | |||
[[Image:Rae.png|thumb| Right atrial enlargement]] | |||
Right atrial enlargement can result from increased pressure in the pulmonary artery, e.g. after pulmonary embolisation. A positive part of the biphasic p-wave in lead V1 larger than the negative part indicates right atrial enlargement. The width of the p wave does not change. | |||
{{clr}} | {{clr}} | ||