ECG readings Flashcards

1
Q

HR for sinus rhythm

A

60-100 bpm

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2
Q

what is the regularity for sinus rhythm?

A

regular

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3
Q

what is the PRI for sinus rhythm?

A

0.12 - 0.20

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4
Q

how many seconds is each box on an EKG strip?

A

0.04

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5
Q

how long is the QRS wave on a sinus rhythm?

A

less than or equal to 0.12 seconds

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6
Q

what is the QTI of a sinus rhythm?

A

less than 0.40 seconds

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7
Q

sinus rhythm

A
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8
Q

what are the nursing actions for sinus rhythm?

A

none

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9
Q

what is the HR for sinus brady?

A

< 60 bpm

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10
Q

every other data besides HR for sinus rhythm is the same for sinus brady & sinus tachy

A

true

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11
Q

what are the nursing actions for sinus brady?

A
  • assess BP, for syncope and SOB
  • prevent falls
  • administer Atropine
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12
Q

sinus brady

A
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13
Q

what is the HR for sinus tachy?

A

100 -150 bpm

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14
Q

nursing actions for sinus tachy

A
  • check BP, for syncope and SOB
  • prevent falls
  • possibly administer B-blockers & Ca+ channel blockers
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15
Q

sinus tachy

A
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16
Q

what is the PRI of A-fib?

A

none

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17
Q

what is the rate & regularity of A-fib?

A

none; it has irregular rhythm

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18
Q

what is it called when an A-fib has more than 100bpm?

A

rapid ventricular response

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19
Q

what causes A-fib?

A
  • MI
  • rheumatic heart disease
  • COPD
  • CHF
  • ischemia
  • CAD
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20
Q

what does the nurse need to check for a patient with A-fib?

A

INR

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21
Q

how does a patient with A-fib present?

A
  • CP
  • hypoxia
  • hypotension
  • SOB
  • decreased cardiac output
22
Q

what is the QTI of A-fib?

A

less than 0.40 seconds

23
Q

how long is the QRS wave of A-fib?

A

less than 0.12 seconds

24
Q

what causes atria to quiver and lead to A-fib?

A

chaotic ectopic current activity

25
Q

what are possible treatments for A-fib?

A
  • cardiovert
  • B-blockers
  • Ca+ channel blockers
  • Digoxin
  • possibly anticoagulant (hemostasis)
26
Q

A-fib

A
27
Q

what is the HR of atrial flutter?

A

250 - 350 bpm

28
Q

P waves are absent in atrial flutter

A

true

29
Q

how long is the QRS complex in atrial flutter?

A

less than or equal to 0.12 seconds

30
Q

what are the causes for atrial flutter?

A
  • RHF
  • pericarditis
  • valve disorder
  • hyperthyroidism
31
Q

atrial flutter

A
32
Q

what is the HR for V-tach?

A

100 - 250 bpm

33
Q

how long is the QRS complex and what is its characteristic?

A

greater than 0.12 seconds
bizarre

34
Q

what is the rhythm for V-tach?

A

regular

35
Q

how is V-tach defined?

A

3 or more consecutive PVCs occur at a rate of 100 bpm

36
Q

what causes V-tach?

A
  • hypoxia
  • ischemia
  • acidosis
  • mitral valve prolapse
  • increased ICP
  • acute myocardial infarcation (AMI)
37
Q

what are the nursing actions for V-tach?

A
  • check for pulse (PRIORITY)
  • check BP
38
Q

potential treatments for stable V-tach

A
  • oxygen
  • 12-lead EKG
  • possible Lidocaine / Amiodarone
  • check K+ & Mg
  • prepare for cardioversion (may turn unstable)
39
Q

potential treatments for unstable V-tach

A
  • cardioversion
  • administer Amiodarone bolus + infusion
40
Q

what are the nursing actions for pulseless V-tach?

A
  • defib + CPR
  • activate code (ACLS certified)
41
Q

V-tach

A
42
Q

what is V-fib?

A

irritable ventricles send out rapid electrical stimuli

43
Q

how do ventricles act during V-fib?

A

they do not contract because they never depolarize

44
Q

how does the patient with V-fib present?

A
  • pulseless
  • no BP
  • no cardiac output
45
Q

what causes V-fib?

A
  • CAD
  • AMI
  • hypoxia
  • acidosis
  • cardiac catheterization
  • cardioversion
  • accidental electrocution
  • extreme hypothermia
46
Q

nursing priorities for V-fib

A
  • check ABC
  • begin CPR
  • defib
47
Q

how does the patient with V-fib present?

A
  • apneic
  • pulseless
  • unresponsive
48
Q

V-fib

A
49
Q

what is the sequence for cardiac conduction?

A
  1. SA node
  2. AV node
  3. Bundle of His
  4. Purkinje fibers
50
Q

which node generates impulses?

A

SA node

51
Q

what are the causes of ST elevation?

A
  • low oxygen from CAD
  • elevated Potassium
  • blocked coronary arteries
52
Q

what are the treatments for STEMI?

A
  • reperfusion
  • angioplasty
  • possible CABG