Acute Coronary Syndromes And Cardiac Conditions Dr. Ross Exam 4 Flashcards Preview

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Flashcards in Acute Coronary Syndromes And Cardiac Conditions Dr. Ross Exam 4 Deck (105)
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1
Q

Acute coronary syndrome is which of the following: A. Unstable angina B. Acute myocardial infarction C. STEMI D. NSTEMI E. All of the above

A

E. All of the above

2
Q

Is stable angina part of acute coronary syndrome? Y/N

A

No, not acute

3
Q

What is good for predicting population risks for coronary artery disease? A. Chest pain B. Upper abd pain C. Past history D. EKG in isolation

A

C. Past history

4
Q

Label the following as acute or non-acute: 1. Unstable angina 2. Stable angina 3. Aortic dissection 4. Pericarditis

A
  1. Acute 2. Non-acute 3. Acute 4. Non-acute
5
Q

What non-cardio things can cause chest pain?

A

Pulmonary embolism Pneumonia Spontaneous pneumothorax (tall white dudes) GERD Peptic ulcer Pancreatitis Costrochondritis/broken rib Anxiety

6
Q

Clinical description of stable vs unstable angina:

A

Stable angina is when you get chest pain symptoms during moderate physical activity or when you are pushing yourself physically. These symptoms go away with rest/nitro. Unstable angina is chest pain while doing very little or resting and it intensifies.

7
Q

Name this cause of acute chest pain: Usually >30mins duration Assoc. symptoms include dyspnea, weakness, diaphoresis

A

Myocardial infarction (MI) heart attack

8
Q

Name the cause of this acute chest pain: Chest pain that occurs during moderate physical exercise

A

Stable angina

9
Q

Name the cause of this acute chest pain: Chest pain occurs at rest or with minimal exertion

A

Unstable angina

10
Q

Name this cause of acute chest pain: Sudden, severe pain, may radiate to back Commonly associated with HTN or connective tissue disease

A

Aortic dissection

11
Q

Name the cause of this acute chest pain: Pleuritic pain, worse in supine position Fever, pericardial friction rub

A

Pericarditis

12
Q

Name the cause of this acute chest pain: Sudden onset of pain, dyspnea, tachypnea, tachycardia

A

Pulmonary embolism PE

13
Q

Name the cause of this acute chest pain: May be assoc. with localized pleuritic pain Cough, fever, crackles

A

Pneumonia

14
Q

Name the cause of this acute chest pain: Unilateral pleuritic pain assoc. with dyspnea and sudden onset

A

Spontaneous pneumothorax

15
Q

Name the cause of this acute chest pain: Burning retrosternal and epicanthic discomfort Aggravated by large meals and post-radial recumbency

A

GERD/esophageal reflux

16
Q

Name the cause of this acute chest pain: Atypical symptoms for any organ system Symptoms may persist despite negative evaluations of multiple organ systems

A

Psychological (like anxiety: saw this a lot in the ED)

17
Q

A heart score of 0-3:

A

2.5% chance of major acute coronary event (MACE) in next 6 weeks, discharge home

18
Q

A heart score of 4-6:

A

20.3% chance of MACE over next 6 weeks, admit for clinical obs

19
Q

Heart score of 7-10:

A

72.7% chance of MACE over next 6 weeks, early invasive strategies (cath lab for stents; surgery for bypass)

20
Q

Which of the following is not a risk factor for ACS: A. Male B. Over 65 C. Tobacco smoking D. HTN E. DM F. HLD G. Being physically active and dieting

A

G. Being active and dieting

21
Q

Who gets an EKG? Pt’s who present with:

A

CP SOB Dizziness Palpitations Syncope Epigastric pain

22
Q

Initial risk stratification for ACS includes what 4 things?

A
  1. History and physical exam 2. EKG 3. Troponin 4. Heart score
23
Q

SxS for high likelihood of CAD/ACS include: Hx: PE: ECG: Cardiac biomarkers:

A

Hx: chest or left arm discomfort as chief complaint; known hx of CAD PE: hypotension, signs of heart failure, transient MR murmur ECG: New ST-segment deviation (1mm or greater); T-wave inversion in multiple precordial (V1-6) leads Cardiac biomarkers: elevated troponin (normal is 0-0.4; > 0.4 is probably MI)

24
Q

Higher risk: Do not ignore! Pain that radiates where? Pain associated with what 4 things?

A

Radiates bilaterally Pain associated with exertion, diaphoresis, nausea, vomiting

25
Q

Lower “gestalt” for MI:

A

Pleuritic pain provoked by respiration or cough Pain in middle to lower abdomen Pain localized by the tip of 1 finger instead of widespread crushing pain Pain reproduced with movement or palpation of the chest wall or arms Brief episodes of pain lasting a few seconds Pain radiating to lower extremities

26
Q

Lower risk in HPI: 3 P’s

A
  1. Pleuritic pain, sharp, stabbing 2. Palpation reproducible (rib fx?) 3. Pain based on position (lying/sitting) Also 4. Younger age 5. Pain lasting seconds or more than 24hrs
27
Q

What’s the first step for a pt with CP after getting basic triage of vitals and CC?

A

EKG

28
Q

Second step after EKG?

A

History and “gestalt”, Take best guess assessment at very low, low, or intermediate

29
Q

Third step after Hx?

A

Troponin and bloodwork Heart score

30
Q

Very low risk:

A

Obvious non-ischemia etiology to pain Normal EKG Normal troponin

31
Q

Low risk:

A

History not suggestive of MI EKG normal x2 Troponin negative Heart score low

32
Q

Intermediate risk:

A

Hx suggestive of ischemia Pain at rest New onset pain Crescendo pain Ongoing pain Ischemic EKG or arrhythmia Positive Troponin > 0.4

33
Q

If you are in any setting besides an ED, you need to arrange transport to hospital and treat for ischemia w/ ____ and ____.

A

ASA Oxygen

34
Q

Cardiac markers

A

Troponin I (2-6 hours, peaks at 12) CK-MB (creatine kinase, 4-8hrs, peaks at 24hrs) LDH (lactate dehydrogenase, or just lactate to us dumb ED folk) CRP (C-reactive protein, inflammatory marker)

35
Q

Check hsT (high sensitivity Troponin) at _ hour and _ hour.

A

0 hour 1 hour

36
Q

Need two hsT levels. Multiply the 1st hsT by ___. The 2nd hsT should be less than that.

A

1.4

37
Q

Don’t use hsT if: (exclusion criteria)

A

Unstable angina/MI Concerning EKG findings Hospitalization already planned ( hsT detects much lower conc. Of troponin, but up to 50% of pt’s without ACS will have a detectable but not abnormal hsT)

38
Q

Troponin is also elevated in what 8 things?

A

Acute heart failure Cardiomyopathy Pericarditis LVH A-fib Renal failure Sepsis Stroke

39
Q

MI criteria on EKG (gender discriminate)

A

Male w/ >2mm ST segment elevation in 2 consecutive precordial (V1-6) leads Female w/ > 1.5mm ST elevation in 2 consecutive precordial leads >1mm ST segment elevation in Limb leads (I and aVL or II, III and aVF ST segment depression in V1-V3= posterior infarction New LBBB with symptoms and sgarbossa criteria

40
Q

Early EKG findings for ischemia: Earliest sign is hyper acute ___ wave (tall and peaked)

A

Peaked T waves

41
Q

What is Wellen’s sign?

A

Bi-phasic T waves in V2-5 w/ or w/o pain (Commonly have LAD ischemia)

42
Q

Areas of an EKG represent coronary arteries: 1. II, III, aVF: 2. I, aVL, V5, V6: 3. V1-2: 4. V3-4:

A
  1. Inferior (RCA) 2. Lateral (circumflex) 3. Septal (LAD) 4. Anterior (LAD)
43
Q

Tx of ACS: Step 1: ASA, oxygen, nitro only if ___ established Step 2: Step 3:

A

IV Heparin (anti-coagulant) Platelet inhibitors

44
Q

30-50% of Inferior infarcts also have ____ _____ infarction as well: think about blood supply

A

Right ventricle

45
Q

Right coronary artery (RCA) supplies bloody to ____ node, _____ _____, and middle segment supplying the lateral and inferior ___, inferior ___ wall, and ___ node.

A

SA node Right atrium Right ventricle Inferior left ventricle wall AV node

46
Q

A posterior left ventricle wall infarction can be missed as there are no specific leads for it. Look at the ______ leads of V__ and V__ for ST_______.

A

Anterior V3, V4 Depression

47
Q

When looking for an inferior wall MI look at ___ and ___. You are looking for ___ depression.

A

V1 and V2, ST

*can look further with right-sided EKG

48
Q

What treatment approach is different with an inferior wall MI w/ RV involvment?

A

Avoid reducing preload aka do NOT give nitrates. You may have to use multiple bolus fluids to maintain stable BP.

*Since the RV is affected LV filling will be diminished = reduced stroke volume = reduced BP.

49
Q

Why would an inferior MI with posterior LV involvment be missed?

A

There are no leads specifically for posterior LV. So look at anterior leads for ST depression/inversion

50
Q

What are the two types of plaques?

a) fibrous and lipid
b) fibrous and fibrolipid
c) atherosclerosis and arteriosclerosis
d) calcium and collagen

A

b) fibrous and fibrolipid

fibrous = fibrin

fibrolipid = fat, cholesterol and calcium

51
Q

When a plaque ruptures it releases potent ____ substances that cause platelet ____ (glycoprotein 1b), ____ and ____.

A

thrombogenic, activation, adhesion and aggregation

52
Q

What is the cause of Prinzmetal’s angina?

A

Coronary spasm without thrombus ALMOST ALWAYS at rest

*caused by cold weather, vasoconstricting meds, cocaine

*usually occurs between midnight and early morning in younger patients

53
Q

In Prinzmetal’s angina, an EKG would show ST ____, but no ST ____ in reciprocal leads.

A

elevation, depression

54
Q

Unstable angina is characterized by

a) small plaque rupture that is self-limiting
b) Varying triggers
c) A fixed deficit that occurs with certain exertional level
d) chest pain occuring mostly after eating

A

c) A fixed deficit that occurs with certain exertional level

55
Q

T/F: Unstable angina can have pain at rest and with exertion.

A

True

56
Q

Unstable angina can have which of the following?

a) mild chest pain that is the same every episode
b) new or typical pain with increased severity
c) pain only at rest
d) Specific EKG findings

A

b) new or typical pain with increased severity

*EKG may be normal

57
Q

Would you have an elevated troponin w/ unstable angina?

a) Yes
b) No
c) depends on severity

A

b) No

*There is no troponin leak with unstable angina

58
Q

What are the four steps you should always do with chest painers?

A
  1. History/ PE
  2. Myocardial marker labs
  3. EKG
  4. Scoring system (i.e. TIMI or Heart)
59
Q

What should you do with a high risk chest painer?

a) Start aggressive fluids
b) Get your attending involved
c) Chest xr

A

b) Get your attending involved early on, high probability to call cath lab

*also start immediate measures i.e. ASA/heparin/O2

60
Q

What lab would you be drawing regardless of low risk chest painer?

A

Troponin immediately after EKG (even if EKG is reassuring)

*2nd EKG 30-60 min later

61
Q

You have a low-risk chest pain in your ED, their 1st and 2nd EKG and troponin are reassuring and their HEART score is 4. You have done the proper charting, given strict ED return precautions which the patient agrees to and agrees to come back for a 72 hr f/u. Are you able to safely discharge?

A

NO!

*Everything is there for a discharge EXCEPT their HEART score (4-10) = admit/further eval

HEART 0-3 only passes go and collects $200

62
Q

You have a chest pain pt with a concerning hx/PE and an EKG non-diagnostic w/ ST depression. Medications you will administer next are?

A

O2, ASA, NTG, morphine, beta blockers, heparin

*not exactly sure what she is getting at on this slide except confirming EKG is going to cath lab

63
Q

You have a 55 yr. male w/ CP radiating to back duration 60 min that ocurred earlier today. He is in great shape and runs daily, but recently he only runs 2 miles b/c he gets tired. No family hx, non smoker, no concerning PMH, 0/10 pain. Do you discharge him?

A

NO!

ACS risk due to VERY concerning history

64
Q

Depending on your facility what testing would you do for intermediate risk chest pain?

a) Exercise tress test w/ adenosine
b) nuclear imaging study w/ or w/o chemical stress (thallium/technitium)
c) Coronary CTA (triple threat scan)
d) PCI
e) Duel source CTA

A

You may do any of those listed depending on facility EXCEPT duel source CTA (not until status change)

65
Q

What is your first step in risk stratification of chest pain patient?

A

First step: get rapid EKG as this will catch high risk patients quickly

66
Q

What is your 2nd step in risk stratification of chest pain patient?

A

Second: Hx and the ol’ gestalt (very low, low or intermediate risk)

67
Q

What is your 3rd step in risk stratification of chest pain patient?

A

Three: Cardiac marker labs (except for very low risk) and HEART score

68
Q

And finally, what is your fourth step in risk stratification of a chest pain patient?

A

Secondary evalutation/disposition, if low risk use accelerated diagnostic protocol (ADP). Two attached are both ADPs

*consider observation admission

69
Q

Chest pain onset is less than 6 hours, your TIMI score is zero. What do you do next?

A

One additional trop 2 hrs after first or 6 hrs after chest pain has resolved. If trop negative and you still have concern for CAD you can order an outpatient stress test or coronary CTA.

70
Q

You have a chest painer with sxs ongoing for more than 6 hrs, neg hx, normal EKG, neg trop, TIMI is 0-1. What is required to rule out MI?

A

After six hours from sxs, a single neg trop rules out MI

71
Q

What are the contraindications to thrombolytic therapy for MI?

A
  • active bleed
  • ICH anytime
  • ischemic stroke last 3 mos
  • spine surg last 2 mos
72
Q

When would you start thrombolytics for MI?

A
  • CP >30 min and no PCI within 90 min
  • acute MI or new left bundle with scarbossi criteria
73
Q

What is rescue PCI?

A

PCI performed after failed thrombolysis. Still needs to be performed in time windwo of < 6 hrs and at the most 12 hrs for STEMI. After this no muscle to save.

74
Q

When do you initiate PCI?

A
  • within 90 min
  • STEMI within 12 hrs
  • failed or contraindicated thrombolytics
75
Q

What are some pitfalls to avoid with chest painers?

A
  • failure to review EKG quickly
  • women can present differently (post-menopausal risk)
  • failure to review old studies (especially EKG looking for changes)
  • New BBB
  • DM frequently have silent MI
76
Q

You have a diabetic patient come into your ED for dizziness. An EKG is ran and you note diagnostic changes indicative of an MI, but the patient has no pain whatsoever. Why would you continue to work this up?

A

Diabetics frequently have silent MI due to altered pain perception

77
Q

You have a 51 yr patient with abdominal pain. What should you be considering?

A

Not considering, doing. Get EKG >50 if you are considering GI disorder to look for MI.

78
Q

Why does a GI cocktail not r/o MI?

A

Because they can help MI pain and GERD

79
Q

What are early complications of MI?

A
  • Inferior wall > bradydysrhythmia
  • AV block (i.e. mobitz 2/ complete block)
  • tachydysrhythmia
  • cardiogenic shock due to muscle loss
80
Q

What are some complications of an MI not caught until ~7 days?

A

Can cause structural damage/rupture of interventricular septum/papillary muscles

81
Q

What are late complication of MI (~2 weeks)?

A
  • pericarditis
  • Dressler syndrome
  • aneurysm rupture
82
Q

What are some benign rhythms you may find after an MI?

A
  • afib
  • PVCs
  • Mobitz 1
83
Q

What are some bad juju rhythms you don’t want to find after an MI?

A
  • Mobitz 2
  • complete block
84
Q

What could be on your ddx for chest pain?

A
  • pericardial tamponade
  • aortic dz
  • pneumonia
  • pneumothorax
  • PE
85
Q

You have a 40 yr male with 3 days sharp, pleuritic CP radiating to left shoulder/neck that is worse when laying down. EKG shows diffuse ST elevation w/o reciprocal changes. What is this hx classic for?

A

Pericarditis

86
Q

What are findings with pericarditis?

A
  • EKG does not have convex (tombstone) shape
  • EKG goes through 4 stages
  • Look for ST elevation in 2 and 3, if 3 > 2 then MI
  • recent or current coxackie virus?
  • Get echo looking for effusion, if large admit and drain
  • tx w/ high dose ASA and colchicine (prevents recurrent attacks)
87
Q

What are some causes of myocarditis in the young?

A
  • enterovirus (especially)
  • parvovirus
  • coxsackie

*Need contrast MRI for dx but echo can be helpful

*Hx of viral illness several wks prior

88
Q

When do cardiac abnormalities in neonates usually present?

A

Within 3 wks

89
Q

You have a neonate that is cyanotic and not responding to O2, what would you treat with next?

A

Prostaglandin

*cyanosis secondary to cardiac abnormality will not respond to O2

Abnormalitites include:

  • truncus arteriosus
  • transposition of great vessels
  • tricuspid atresia
  • tetrolog of fallot
  • tontal anomolus pulmonary circulation
90
Q

Why do we care about hypertensive patients?

A

-increased risk for CV and renal disease

91
Q

Memorize HTN classifications with attached pic

A
92
Q

How do you treat asymptomatic HTN in ED setting?

A

No right or wrong.

  • Maybe work up, maybe not
  • EKG looking for LVH
  • Do not have 2 elevated readings on 2 sep occasions
  • If BP >140 sys or > 90 diastolic could refer for outpatient
93
Q

62 yr male in ED sudden onset severe chest and back pain. Earlier syncopal episode of unknown length. Now awake with c/o CP.

PMH: HTN

Vitals BP 190/110 pulse 98

2nd Vitals 150/80 pulse 101

What are you concerned for?

A

Aortic dissection

94
Q

A patient with hypotension you must immediately consider what?

A

Cardiogenic shock (arrythmia)

  • aortic dissection
  • aortic aneurysm

**aortic dissection and aneurysm will have:

  1. Pulse deficits
  2. Abdominal mass
  3. hematuria
95
Q

What is Beck’s triad referring to and what are the 3 signs?

A

Cardiac tamponade

  1. JVD
  2. Hypotension
  3. Muffled heart sounds
96
Q

Which is more common an aortic dissection or aneurysm?

A

Dissection

97
Q

Patients with aortic dissection may present with what?

A
  • Pain out of proportion w/ exam
  • Normal EKG
  • ill appearing
  • ripping or tearing pain
  • Initially hypertensive then hypotensive

Tx: IV X 2, fast US and CXR, labs

Risk w/ middle age males with HTN, pregnant females or Marfans

98
Q

You have a patient with complaints of chest pain and nuero complaints. What must you consider and why?

A

Aortic dissection. Start thrombolytics thinking stroke then will bleed out = clean kill

*Get CXR or CTA

99
Q

An abdominal aortic aneurysm is characterized by?

A

dilation of all layers of arterial wall. Usually catastrophic when ruptures.

Tx: IV X 2, blood products, vascular surgeon

100
Q

How would you dx a thoracis aneurysm?

A

CXR followed w/ CT chest with contrast

Findings:

widened mediastinum

  • left pleural effusion
  • calcium sign
  • left apical capping
  • tracheal deviation
101
Q

How would you dx an AAA?

A

Ulstrasound f/u with CT chest with contrast

102
Q

When is an AAA considered pathological? At what size?

A

> 3 cm = pathological

> 5.5 cm = need surgery

103
Q

ED tx for AAA?

A

Lower HR then BP

-beta blocker then arterial dilator (labetalol then nitroprusside)

104
Q

Which of the following drugs was the only one shown in studies to improve mortality in the setting of AMI?

a) ASA
b) NTG
c) High flow O2
d) beta blockers

A

a) ASA

*23% mortality improvement

105
Q
A