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EKG > L2: Basics waves, complexes, intervals, HR > Flashcards

L2: Basics waves, complexes, intervals, HR Flashcards

1
Q

P pulmonale

A

right atrial enlargement

p wave amplitude >2.5 mm

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2
Q

wide (>.10 sec) p wave

A

P mitrale

left atrial enlargement

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3
Q

First part of p wave=

Second part of p wave=

A 
1st= right atrial depolarization
2nd= left atrial depolarization
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4
Q 
Tall
peaked
notched
large
T wave
A

atrial tachycardia

p wave gets hidden in T wave

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5
Q

“F” waves

A

flutter waves

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6
Q

“f” waves

A

fibrillitory waves

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7
Q

Flutter (F) waves rate

A

250-350 bpm

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8
Q

“saw-toothed pattern”

A

Flutter waves

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9
Q

Fibrillitory (f) waves rate

A

> 350 bpm

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10
Q

wave, chaotic looking baseline

lack of discernable p waves

A

Fibrillitory (f) waves

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11
Q

More p waves than QRS complexes

A

some p waves blocked and didn’t reach ventricles

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12
Q

retrograde depolarization of atria

A

inverted p waves

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13
Q

Wide-Bizarre QRS complexes of supraventricular origin

A

Right or left bundle branch block→ intraventricular conduction defect

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14
Q

Aberrant QRS conduction

A

Electrical impulses reach bundle branch while it is still refractory→ impulse travels down unaffected bundle branch first, followed by the other→ wide

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15
Q

Short PR interval

A

impulse originates close to AV junction
OR
impulse arises from a supraventricular site but travels through abnormal accessory pathways to the ventricles→ premature ventricular depolarization→ pre-excitation

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16
Q

Delta wave

A

“slurred” upstroke in QRS complex

seen in abnormal accessory pathways causing short PR interval

17
Q

2 reasons PR interval could varry

A

Wandering atrial pacemaker
(random)
2nd degree AV heart block type one
(longer until one is dropped)

18
Q

In atrial fibrillation or flutter, PR interval is

A

absent

19
Q

In ventricular dysrhythmias, PR interval is

A

absent

20
Q

In 3rd degree heart block, PR interval is

A

not measureable

P waves and QRS are not associated with each other

EKG (10 decks)

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