First degree AV block laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ahmed Elsaiey, MBBCH [2]

Laboratory findings

Laboratory tests in patients with bradycardia or conduction disorder based on the underlying cause may include:

• Thyroid function test in suspicion of hypothyroidism
• Lyme titer in acute Lyme carditis in a young person who develops atrioventricular block in an endemic area
• Potassium level, PH in patients with renal insufficiency
• Blood digoxin level in patients suspected digoxin overdose

References

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