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icu > Dysrythmias > Flashcards

Dysrythmias Flashcards

1
Q

P wave indicative of ?

A

atrial contraction, atrial depolarization

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2
Q

QRS wave indicative of?

A

ventricular contraction, ventricular depolorization

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3
Q

T wave indicative of?

A

ventricular relaxation, ventricular replorization

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4
Q

Normal INR=

A

1-2

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5
Q

INR on anti-coag therapy normal is

A

2-3

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6
Q

INR on mechanical ventilation norm is

A

3-4

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7
Q

Triad of I’s

A

Injury, Ischemia, Infarction

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8
Q

what is happening with ischemia during waves?

A

ST depression or T wave inversion

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9
Q

what is happening with injury during waves?

A

elevated ST segment (STEMI ALERT)

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10
Q

what is happening during infarction during waves?

A

death of tissue, Q wave is the indicator

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11
Q

deep q wave is indicative of what?

A

past MI

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12
Q

ST elevation is indicative of?

A

injury

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13
Q

ST depression is indicative of?

A

ischemia

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14
Q

sinus tach characteristics?causes? treatment?

A

rate 100-150 beats/min

causes: stimulants, exercise, dehydration
treatment: digoxin, Beta blockers, sedative, vagal maneuver

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15
Q

SVT characteristics? treatment?

A

rate 160-250 beats/min

treatment: oxygen, vagal maneuver, Adenosine, anti-arythmics, shocks

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16
Q

how do you give Adenosine?

A

6 mg, 12mg, 12 mg

17
Q

Symptomatic bradycardia S/S? caused by? treatment?

A

dizziness, chest pain, sweatiness, palps
caused by: digoxin, Ca+ channel blockers, beta blockers
treatment: O2, atropine (give half, if nothing happens, give the rest, transcutaneous pacemaker, Dopamine drip

18
Q

If asymptomatic bradycardia, what do you give?

A

nothing

19
Q

Atrial Flutter or A fib? which one is worst?

A

A flutter

20
Q

A flutter: treatment?

A

Ca channel blockers, beta blockers, dig, synch shock

21
Q

A fib., what is it?

A

erratic impulse formation, no distinguishable P wave

22
Q

with A fib, what do you want to watch out for? inc. risk of what?

A

pulmonary/systemic emboli

23
Q

Treatment for A fib.:

A

Goal: slow heart rate

cardizem, anticoags if needed

24
Q

what is the CHADS score?

A 
Congestive HF
Hypertension
Age
Diabetes
Stroke Prior
(if score high, give warfarin (coumadin) if moderate or low give aspirin
25
Q

Premature Ventricular Contractions

A

bizarre and wider than normal beats, can be unifocal, or multifocal (up and inverted) or couplets or bigeminy or trigeminy.

26
Q

treatment for PVC’s?

A 
goal: treat cause
hypoxia --give O2
Ischemia
dehydration (electrolytes)
antiarythmic
27
Q

importance to notice multifocal PVC’s b/c?

A

multifocal PVC’s have higher chance of causing V Tach

28
Q

how many PVC’s in a min is considered bad?

A

greater or equal to 6, call doctor!

29
Q

What is V tach?

A

Wide QRs, may/may not have pulse
treat pulseless like V fib: defib, cpr, epi,
if has pulse: shock, cpr, amiodorone, lidocaine

30
Q

specific form of polymorphic ventricular tachycardia in patients with a long QT interval. It is characterized by rapid, irregular QRS complexes, which appear to be twisting around the ECG baseline.

A

Torsades de pointes

31
Q

relevance of Torsades de Pointes?

A

can quickly deteriorate into V fib

32
Q

treatment for Torsades de pointes?

A
  • CPR, cardioversion

med: MAGNESIUM SULFATE

33
Q

Chaotic, no readable PQRST waves, coarse vs. fine

A

V fib

34
Q

treatment for V fib?

A

MEDICAL EMERGENCY: DEFIB!!!

cpr, epi, coronary perfusion

35
Q

nurse sees pt in v fib? what should she do?

A

feel pulse, call code, shock

36
Q

kinda looks like normal rhythm but no P wave, narrow QRS? treatment?

A

junctional rhythm,

med: atropine, pacemaker, dopamine drip, epi drip

37
Q

what do you do for asystole? what do you not do?

A

NO shock

-CPR, atropine, check in 2 leads, confirmation of death

38
Q

for renal pt with wide QRS, what do you do?

A

give calcium chloride slowly

39
Q

dopamine you never want to push because it’s a vesicant, if you do , what subcut injections around affected limb can you give to ease the sloughing?

A

Regitine

icu (4 decks)

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