Cardiac Electrophysiology Flashcards

1
Q

Represents ATRIAL DEPOLARIZATION

A

P wave

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2
Q

INITIAL DEPOLARIZATION of ventricles

A

PR interval

depends on CONDUCTION VELOCITY through AV node

decreased — (increased conduction velocity through AV node) — SYMPA

increased — (decreased conduction velocity through AV node) — PARA

decrease AV nodal conduction (HEART BLOCK) — INCREASE PR interval

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3
Q

DEPOLARIZATION of VENTRICLES

A

QRS complex

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4
Q

ENTIRE PERIOD OF DEPOLARIZATION and REPOLARIZATION of venrtricles

A

QT interval

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5
Q

PERIOD when VENTRICLES are DEPOLARIZED

ISOELECTRIC

A

ST segment

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6
Q

Ventricular REPOLARIZATION

A

T wave

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7
Q

HYPOKALEMIA

A

increased amplitude/width of p waves
flat/inverted t waves
u wave

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8
Q

HYPERKALEMIA

A

low p waves

tall t waves

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9
Q

HYPOCALCEMIA

A

PROLONGED QT interval

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10
Q

HYPERCALCEMIA

A

SHORTENED QT interval

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