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40 Cards in this Set
- Front
- Back
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What is the blood supply to the Inferior portion of the heart
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RCA
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What is the blood supply to the
Lateral portion of the heart |
Circumflex artery
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What is the blood supply to the Septal portion of the heart
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LAD
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What is the blood supply to the Anterior portion of the heart
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LAD
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What areas does the RCA supply
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Inferior LV
RA/RV Septum (no e-) AV node SA node (70%) PDA (85%) |
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What areas does the LAD supply
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Bulk of LV
Septum (e-) |
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What areas does the LCX supply
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Lateral LV
SA node (25%) PDA (10%) |
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LAD: ↑↓ indicates what?
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LVH
LAFB inferior MI WPW |
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RAD: ↓↑ indicates what?
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RVH
LPFB lateral MI COPD WPW dextrocardia |
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NW: ↓↓ indicates what?
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VTACH
HYPERkalemia |
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A normal P-wave is
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<0.11 sec / 0.5-2.5 mm
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A short P-wave indicates
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<0.5 mm: HYPERkalemia
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A tall P-wave indicates
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>2.5 mm: RAE
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A long/BI P-wave indicates
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>0.12 sec: LAE
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A normal Q-wave is
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Normal: <0.04 sec / <1/4 R
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a Significant Q indicates
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Significant: >0.04 sec / >1/4 R
MI or Obstructive Septal Hypertrophy (IHSS) + ST/T abnormality -- MI? |
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Lack of R wave progression indicates
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LVH
LBBB antero-septal MI Pulmonary Dz (asthma, COPD, PE) |
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Early R wave progression indicates
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Early: V1/V2
RVH, RBBB, posterior MI |
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Abnormal peaked T wave indicates
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Peaked (generalized): HYPERkalemia
Peaked (local, 1 lead): MI |
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Abnormal inverted T wave indicates
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Inverted: supportive but not diagnostic
Evolving MI Chronic pericarditis BBB VH Acute Cerebral Dz |
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Normal PRI
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0.12-0.20 sec
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Abnormal PRI
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Abnormal:
- Short <0.12 sec: Low atrial focus, WPW - Long >0.20 sec: AV block, Meds [Depressed: Pericarditis, COPD] |
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Normal QRS
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Normal: 0.05-0.11 sec
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Abnormal QRS
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Abnormal:
Wide 0.10-0.12 sec: IVCD Wide >0.12 sec: BBB • HYPERkalemia, LVH |
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Normal ST
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Normal: flat (measured 2 boxes post-QRS)
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Abnormal Elevation ST
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Elevation: >1 mm limb / >2 mm precordial
MI Pericarditis, HYPERkalemia |
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Abnormal Depression ST
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Depression: >1 mm
Ischemia VH, BBB, Tachy HYPOkalemia, digoxin, hypothermia |
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Normal U wave
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<1.5 mm
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Abnormal tall U wave
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Tall: ≥5 mm
HYPOkalemia, HYPOcalcemia LVH HYPERthyroid |
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Abnormal Inversion U wave
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Inversion
MI HTN |
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What is the criteria for LBBB
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QRS >0.12 sec
Tall R in V4-V6, I, or aVL Slurred notch High voltage S in V1, V2, or V3 V5, V6, 1, and aVL ST↓, inverted T |
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What is the criteria for LAFB
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[Q1S3] w/ LAD
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What is the criteria for RBBB
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QRS >0.12 sec
RSR' in V1-V3 Slurred S in I and V6 V1/V2: ST↓, inverted T |
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What is the criteria for LPFB
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[S1Q3] w/ RAD
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What is the etiology for LAFB
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Etiology: Dx of exclusion
Acute MI HTN, aortic stenosis Dilated cardiomyopathy Consider LAD as a source |
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What is the criteria for LAE
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(P-mitrale)
Notched P wave Diphasic P in V1 >0.11 wide / >o.o4 apart |
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What is the criteria for RAE
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(P-pulmonale)
Tall peaked P >2.5 mm Most prominent I, II, aVF Biphasic P in V1 Initial > terminal |
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What is the criteria for LVH
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-Scott Criteria: Deepest S in V1 or V2
+ Tallest R in V5 or V6 -- >35mm |
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What is the criteria for RVH
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RAD w/ normal QRS
Reversal of R wave progression No BBB |
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What is the etiology for RVH
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-Etiology:
COPD Pulmonary HOTN Valvular Dz Left heart failure |
