Answer DV Case 4: Difference between revisions

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m (New page: # The rhythm shows inverted P-waves in the inferior leads indicative of atrial rhythm. # The answer on this question is difficult. An atrial rhythm can be the result of SA block. This ECG ...)
 
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[[Image:DVA0004.jpg|700px|thumb|left|DV Case 4. Click on image for enlargement.]]
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==Questions==
This ECG shows pauses in the heart rhythm. The patient felt light headiness
#What is the base rhythm?
#Is there evidence for sino atrial block?
#What is the cause of the pauses in the heart rhythm?
#Is there a pacemaker indication?
#what is your next step in your workup?
==Answers==
# The rhythm shows inverted P-waves in the inferior leads indicative of atrial rhythm.
# The rhythm shows inverted P-waves in the inferior leads indicative of atrial rhythm.
# The answer on this question is difficult. An atrial rhythm can be the result of SA block. This ECG however cannot produce the proper answer. The use of beta-blockers for instance, could cause a marked lowering of the sinus rhythm, allowing for an atrial escape rhythm, which is slow as well.
# The answer on this question is difficult. An atrial rhythm can be the result of SA block. This ECG however cannot produce the proper answer. The use of beta-blockers for instance, could cause a marked lowering of the sinus rhythm, allowing for an atrial escape rhythm, which is slow as well.

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