Associations 2 Flashcards
1st degree burn
Epidermis Painful Erythema No blisters Blanching (intact cap refill)
2nd degree burn, superficial
Epidermis + partial dermis Painful Erythema Blisters Blanching (intact cap refill)
2nd degree burn, deep
Epidermis + partial dermis Painful Erythema Blisters No blanching (non-intact cap refill)
3rd degree burn
Epidermis + dermis + some fatty tissue
Painless
White/charred/gray
No blanching (non-intact cap refill)
Burn complications
Infection/Sepsis (pseudomonas) Curling stress ulcers Aspiration/inhalation injury Dehydration/hypovolemia/shock Ileus Renal insufficiency/rhabdomyolysis Compartment syndrome (Electrical): dysrhythmias, RF, bony injury, neuro issues, acidosis
Fresh water drowning
Decreased electrolyte concentrations
RBC lysis
(hypotonic water drawn into vasculature)
Salt water drowning
Pulmonary edema
Increased electrolyte concentrations
(hypertonic water draws more water into alveoli)
Parkland formula
4 mL x body mass (kg) x % surface burned
LR: Give 1/2 in first 8 hrs, 1/2 in next 16 hrs
May also need maintenance fluid
J wave (EKG)
Small bump after QRS
Hypothermia
(may also see Vtach/Vfib)
SCLC associations
Lambert-Eaton (muscle weakness improving w/ use)
Ectopic ACTH production
others??
Bradycardia in kids
R/O BB or CCB toxicity
Anticholinergic OD
Hot as a hare Dry as a bone Red as a beet Blind as a bat Mad as a hatter Bloated as a toad Tachycardia
Cholinergic (organophosphate) OD
DUMBBELSS Diarrhea Urination Miosis Bronchospasm Bradycardia Excitation of skeletal muscles/emesis Lacrimation Sweating Salivation Abdominal cramping
Carboxyhemoglobinemia causes
Usu from smoke inhalation
Ready to intubate quickly (airway edema)
Nitrates C/I (induce methemoglobinemia)
Methemoglobinemia causes
Familial
Anesthetics such as benzocaine
Benzene
Certain antibiotics (including dapsone and chloroquine)
Nitrites (used as additives to prevent meat from spoiling)
Nitrates (used to treat cyanide poisoning)
LAD EKG
V1-V3 (septal, IVS)
V2-V4 (anterior wall)
L circumflex EKG
I, aVL, V5, V6 (lateral wall)
R posterior descending EKG
II, III, aVF (inferior wall)
CO
SV x HR
rate of O2 use / (arterial O2 - venous O2)
SV determined by
Contractility
Preload (venous return)
Afterload (pressure in aorta)
SV increases from
Catecholamine release Increase in intracellular Ca Decrease in extracellular Na Digoxin Anxiety Exercise
SV decreases from
BB
Heart failure
Acidosis
Hypoxia
Exercise increases CO by
Increased SV (initially) Increased HR (later)
MAP
CO x TPR
2/3 DBP + 1/3 SBP
DBP + 1/3 pulse pressure
Increased PR interval
> 0.2 sec
Heart block
Elevated/depressed PR interval
Pericarditis
QRS complex, narrow
<0.12 sec is normal
SVT
Signal in AV node or above
Normal His/Purkinje
QRS complex, wide
> 0.12 sec
Delay in ventricular depolarization
Rhythm starting distal to AV node
Ventricular tachycardias
Signs of MI on EKG
Elevated ST segment
T wave inversion
T wave on EKG
Large - hyperkalmia
Flattened - hypokalemia
Inverted - MI
ST depression on EKG
Sign of ischemia
Downsloping/horizontal worse than upsloping
Myositis vs Myalgia
Check for muscle inflammation (CPK)
CCB
Non-DHP (verapamil, diltiazem) work on heart
DHP (nifedipine, amlodipine) work on periphery, causing VD, decreasing preload
More likely to have atypical or no angina w/ myocardial ischemia
DM (sensory neuropathy)
Elderly
Females
May have fatigue, exercise intolerance, flu-like symptoms
Causes of chest pain
Cardiac (Angina, MI), GERD, MSK (MC) Cocaine/Costochondritis Hyperventilation/Herpes zoster Esophagitis/Esophageal spasm Stenosis of aorta Trauma Pulmonary embolism/Pneumonia/Pericarditis/Pancreatitis Angina/Aortic dissection/Aortic aneurysm Infarction (myocardial) Neuropsychiatric (depression)
Chest pain that occurs w/ exercise, disappears w/ rest
Stable angina
Chest pain w/ ST elevation only during brief episodes
Prinzmetal angina (coronary artery vasospasm)
Chest pain where patient can localize w/ one finger
MSK
Chest pain w/ tenderness to palpation of chest wall
MSK
Chest pain w/ rapid onset, sharp, “tearing” that radiates to scapula or back
Aortic dissection
Chest pain w/ rapid onset, sharp in young person and associated w/ dyspnea
Spontaneous pneumothorax
Chest pain that occurs after heavy meals and is relieved by antacids
GERD, Esophageal spasm
Chest pain that is sharp, lasts for hours-days and is somewhat relieved by sitting forward
Pericarditis
Chest pain made worse by deep breathing and/or motion
MSK
Pleuritic pain
Chest pain in dermatomal distribution
Herpes zoster
MCC noncardiac chest pain
GERD, MSK
Chest pain w/ acute onset dyspnea, tachycardia, confusion in hospitalized patient
Pulmonary embolism
Chest pain began day after starting exercise program
MSK
Chest pain w/ widened mediastinum on CXR
Aortic dissection
Electrolytes in cardiac patients
K > 4, Mg > 2
Decreases potential risk of arrhythmias
New onset RBBB
Pulmonary embolism
New onset LBBB
MI
Difference btwn unstable angina and NSTEMI
-/+ cardiac enzymes
Cardiac enzymes (troponin, CK-MB)
Show cardiac muscle damage/cell death
Three sets 8 hrs apart
Troponin I increases faster, more sensitive/specific
CK-MB decreases 24-72 hrs later (troponin I takes 7 days)
U wave on EKG
Relative hypokalemia
Also hypercalcemia, hyperthyroidism
Q wave (big) on EKG
Post-MI, usu persists weeks later
MCC sudden cardiac death post-MI
Vfib
Vtach
Cardiogenic shock
Greatest risk of ventricular wall rupture post-MI
4-8 days later
Dressler syndrome
AI pericarditis (fever, +ESR) 2-4 weeks post MI
Delta wave on EKG (slurred upstroke of QRS)
Wolff-Parkinson-White syndrome (AV nodal reentry through accessory conduction pathway; PSVT)
Medications that can cause heart block arrhythmias (esp Mobitz I and above)
BB
Digoxin
CCB
Arrhythmia w/ narrow QRS, rate >100
Supraventricular tachycardia
Arrhythmia w/ no relationship between P wave and QRS
3rd degree heart block
Arrhythmia w/ 3+ P wave morphologies, rate >100
Multifocal atrial tachycardia
Arrhythmia w/ rate <50
Bradycardia
Arrhythmia w/ PR interval >0.2 sec
1st degree heart block
Arrhythmia w/ early, wide QRS w/o P wave
Premature ventricular contractions
Arrhythmia w/ wide QRS, HR 160-240
Ventricular tachycardia
Arrhythmia w/ PR interval becomes longer w/ dropped beat
2nd degree heart block, Mobitz type I (Wenckebach)
Arrhythmia w/ chaotic pattern, no P wave, no QRS
Ventricular fibrillation
Arrhythmia w/ normal PR, occasional dropped beat
2nd degree heart block, Mobitz type II
Arrhythmia w/ sawtooth pattern
Atrial flutter
Arrhythmia w/ no P waves, narrow QRS, irregularly irregular
Atrial fibrillation
Arrhythmia w/ sinusoidal pattern of QRS
Torsades de pointes (VTach)
Antiarrhythmic classes
I - Na channel blockers - class IA, IB (lidocaine, tocainide), IC
II - BB - propanolol, esmolol, metoprolol
III - K channel blockers - amiodarone (also type I), sotalol
IV - CCB (NDP) - verapamil, diltiazem
PVCs that are concerning
> 3/min
>3 in a row (VTach)
Common causes of AFib
PIRATES Pulmonary disease/pericarditis Ischemia (CAD) Rheumatic heart disease Anemia **hyperThyroid Ethanol Sepsis Also HTN, valvular disease
Causes of PEA/Asystole
Hs (7) & Ts (7) Hypovolemia Hypoxia H ions (acidosis, common in prolonged code) Hyperkalemia (common in prolonged code from acidosis) Hypokalemia Hypoglycemia Hypothermia Tamponade Tension pneumothorax Thrombosis (MI) Thrombosis (PE) Trauma Tablets Toxins
Organism causing infection in burn victims
Pseudomonas
S3 causes
Dilated ventricles HF (most frequent sign of CHF) Dilated CMP MR Acute MI
S4 causes
Stiff LV
Systolic HF causes
Decreased contractility Increased preload (eventually) Increased afterload HR abnormalities (brady/tachy) High output conditions (anemia, hyperthyroid, etc)
Diastolic HF causes
LVH
Restrictive cardiomyopathy
Hypertrophic cardiomyopathy
L CHF S/Sx
Fatigue DOE, orthopnea, PND, cough (pulm edema) Displaced PMI S3 Rales, crackles
R CHF S/Sx
JVD
Peripheral edema (especially BLE)
Hepatomegaly, hepatic congestion
CC R CHF
L CHF (MCC) Pulmonary HTN, COPD/pulmonary disease (cor pulmonale), valvular disease, congenital
Normal EF
55-75%
Diastolic murmur at L lower sternum that increases with inspiration
TS
Late diastolic murmur w/ opening snap, no change with inspiration
MS
Systolic murmur heard best in 2nd R interspace
AS
Systolic murmur heard best in 2nd L interspace
PS
ASD (w/ fixed split S2)
Late systolic murmur heard best at apex
MVP
Diastolic murmur with widened pulse pressure
AR
Holosystolic murmur louder w/ inspiration at L lower sternum
TR
VSD
Holosystolic murmur heard at apex, radiates to axilla
MR
MCC hypertrophic cardiomyopathy
Congenital (50% autosomal dominant)
Systolic murmur louder w/ Valsalva
Hypertrophic cardiomyopathy
MC cardiomyopathy
Dilated
Causes dilated cardiomyopathy
Idiopathic Alcohol use Beriberi Coxsackievirus B (myocarditis) Cocaine use Doxorubicin Hemochromatosis HIV Ischemic heart disease Pregnancy Chagas disease
Restrictive cardiomyopathy - causes and dx
Sarcoidosis
Amyloidosis
Hemochromatosis
Dx: biopsy
Equal pressure in all chambers on cardiac cath
Chronic constrictive pericarditis
Transudative pericardial effusion
Low in protein, spec gravity <1.012, more common
Exudative pericardial effusion
High in protein, spec gravity >1.020
Workup for neoplasm, fibrotic disease, TB
Beck triad
Hypotension, distant heart sounds, distended neck veins
Think cardiac tamponade and perform urgent pericardiocentesis (echo first if patient stable)
Low voltage globally on EKG
Cardiac tamponade
Global ST elevation, PR depression
Acute pericarditis
Kussmaul sign causes
JVD w/ inspiration (from decreased RV capacity) Constrictive pericarditis Restrictive CMP RV infarct Massive PE Cardiac tamponade (rare)
Pulsus paradoxus causes
Decreased SBP > pericarditis
Heart failure + diabetes + elevated LFTs
Hemochromatosis (usu dilated, can be restrictive CMP)
Chagas disease
Trypanosoma cruzi
Cardiomegaly
Mega-esophagus (achalasia)
Megacolon
Causes of myocarditis
MCC infection: viruses (Coxsackie, adenovirus, echovirus, EBV, CMV, influenza; parvovirus B19, HHV-6), bacteria, rickettsiae, fungi, parasites Drug toxicity (chemo, penicillins, sulfonamides, cocaine, radiation), toxins, endocrine abnl
Acute rheumatic fever cause
Untreated GAS -> autoantibodies
Rheumatic heart disease diagnosis
Recent strep + 2 major or 1 major, 2 minor JONES (major) Joints (polyarthritis, hot and swollen joints) Heart (carditis, valve damage M>A>T) Nodules (SQ, extensor) Erythema marginatum (painless) Sydenham chorea PEACE (minor) Previous rheumatic fever EKG w/ PR prolongation Arthralgias CRP/ESR Elevated temp
Libman-Sacks endocarditis
SLE, noninfective endocarditis
At risk patients for endocarditis
Congenital heart defects
IVDU
Prosthetic valves
Negative-culture endocarditis bacteria
HACEK Haemophilus Actinobacilus Cardiobacterium Eikenella Kingella
Acute endocarditis bacteria
Staph aureus (esp prosthetic valves)
Strep pneumo
Strep pyogenes
Neisseria gonorrhoea
Subacute endocarditis bacteria
Viridans strep (esp dental)
Enterococcus
Fungi
Staph epidermidis (coag neg) (esp prosthetic valves)
Infective endocarditis diagnosis
Direct histologic evidence OR Positive gram stain from surgical debridement/autopsy OR 2 major Duke criteria OR 1 major + 3 minor OR 5 minor
Major Duke criteria
Infective endocarditis (2 major or 1+3 or 5)
Serial blood cultures + for organisms associated
Blood culture + for Coxiella burnetii
Presence of vegetations or cardiac abscess seen on echo
Evidence of new onset valvular regurgitation
MC valve involved in infective endocarditis
Mitral valve (regurgitation)
Valve involved in IVDU + infective endocarditis
Tricuspid regurgitation
Minor Duke criteria
Infective endocarditis (2 or 1+3 or 5 minor)
Predisposing heart condition or IVDU
Fever >38C
Vascular phenomenon (emboli, infarcts, aneurysm, hemorrhage, Janeway lesions)
Immunologic phenomenon (glomerulonephritis, Osler nodes, Roth spots, +RF)
Positive cultures not meeting major requirements or serologic evidence of infection w/ neg culture
Osler nodes
Painful nodules on fingertip or toe pads
Janeway lesions
Painless petechiae on palms/soles
Roth spots
Retinal hemorrhages
Reasons for prophylaxis for endocarditis
Prosthetic cardiac valves Previous history IE Congenital heart disease (unrepaired cyanotic, repaired w/ prosthetic, not fully repaired) Cardiac transplant w/ valve problems Not before GI/GU procedures Not rheumatic heart disease anymore
Dx HTN
> 140 or >90 at 3 separate readings
HTN urgency
BP >180/120
HTN emergency
BP >180/120 + end-organ damage (renal failure, pulmonary edema, aortic dissection, unstable angina, MI, AMS, papilledema, retinal vascular changes)
HTN in UE but low BP in LE
Aortic coarctation (assoc w/ Turner’s, AV pathology, PDA)
HTN + proteinuria
Renal disease
MCC secondary HTN
Renal disease
HTN + hypokalemia
Primary hyperaldosteronism (Conn) Secondary hyperaldosteronism (renal artery stenosis)
HTN + tachycardia, diarrhea, heat intolerance
Hyperthyroidism
HTN + hyperkalemia
Renal failure
HTN + episodic sweating, tachycardia
Pheochromocytoma
ACE/ARB AE
Dry cough, angioedema (ACE)
Azotemia (monitor)
Hyperkalemia (C/I)
Teratogen (affects fetal kidneys)
Thiazide diuretic AE
Increased serum glucose (mild) Increased serum cholesterol, TG Hypokalemia Hyponatremia Increased serum Ca (decreased excretion)
Loop diuretic AE
Increased serum glucose (mild) Increased serum cholesterol, TG Hypokalemia Hyponatremia Decreased serum Ca (increased excretion)
Swan Ganz catheter measures?
PCWP (estimates LA pressure)
Transfusion rxn w/ fevers, chills, rigors, malaise 1-6 hrs after transfusion
Nonhemolytic febrile (Abs to HLA antigens)
Transfusion rxn w/ fever, chills, nausea, flushing, tachycardia, tachypnea, hypotension during transfusion
Acute hemolytic (ABO incompatibility)
Transfusion rxn w/ slight fever, falling H/H, mild increase in unconjugated bili 2-10 days after transfusion
Delayed hemolytic (Abs to Kidd/Rh antigens)
Transfusion rxn w/ rapid onset of shock and hypotension, maybe angioedema and resp distress
Anaphylactic (maybe anti IgA Abs in IgA deficiency)
Transfusion rxn w/ urticaria
Minor allergic rxn (plasma present in donor blood)
Transfusion rxn w/ thrombocytopenia developing 5-10 days after transfusion
Post-transfusion purpura (usu women sensitized by pregnancy)
Biggest risk factors for AAA
Tobacco use, age >55
atherosclerosis, HTN, fam hx
Screening for AAA
Men 65-75 w/ smoking hx, one time abd US
Indications to surgically repair AAA
> 5.5 cm (men) or 5 cm (women)
Increase in diameter by >0.5 cm in 6 months
Symptomatic
Risk factors aortic dissection
HTN
Trauma, aortic coarctation
Syphilis, Ehlers-Danlos, Marfan
Widened mediastinum on CXR
Think aortic dissection (get CT w/ contrast) or aortic rupture
Intermittent claudication
Think PVD
PVD severity
Pain Pallor Poikilothermia (can't regulate temperature) Pulsenessness Paresthesia Paralysis
Virchow’s triad
Blood stasis
Hypercoagulability
Vascular damage
Dx criteria for PVD
ABI <0.4 severe disease
Palpable purpura
Think vasculitis
Vasculitis + hepatitis B or C
Polyarteritis nodosa
Vasculitis + kidneys, GI, but spares lungs, w/ neg p-ANCA
Polyarteritis nodosa
Vasculitis + women >50
Temporal (giant cell) arteritis
Vasculitis + polymyalgia rheumatica
Temporal (giant cell) arteritis
Vasculitis + headache, blindness
Temporal (giant cell) arteritis
Vasculitis + Asian woman age 10-40
Takayasu arteritis
Vasculitis + decreased UE pulses
Takayasu arteritis
Vasculitis + asthmatic symptoms
Allergic granulomatosis w/ angiitis (Churg-Strauss)
Vasculitis + p-ANCA
Allergic granulomatosis w/ angiitis (Churg-Strauss)
Vasculitis + eosinophilia
Allergic granulomatosis w/ angiitis (Churg-Strauss)
Vasculitis + LE palpable purpura
Henoch-Schonlein purpura
Vasculitis + recent upper respiratory infection
Henoch-Schonlein purpura
Vasculitis + IgA nephropathy
Henoch-Schonlein purpura
Vasculitis + lung disease + renal disease
Goodpasture (anti-GBM)
Granulomatosis w/ polyangiitis (Wegener) (upper airway involvement, + c-ANCA)
Henoch-Schonlein purpura (recent URI, IgA immune complexes, palpable LE purpura, usu kids)
Vasculitis (focal necrotizing) + granulomas in lungs and upper airway + glomerulonephritis
Granulomatosis w/ polyangiitis (Wegener)
Vasculitis + c-ANCA
Granulomatosis w/ polyangiitis (Wegener)
Vasculitis + young male smokers
Thromboangiitis obliterans (Buerger disease)
Non-cyanotic congenital heart defects
VSD
ASD
PDA
Cyanotic congenital heart defects
5Ts Tetralogy of Fallot Transposition of the great vessels Truncus arteriosus Total anomalous pulmonary venous return Tricuspid atresia
MC congenital heart defect
VSD (30%)
MC cyanotic congenital heart defect
Tetralogy of Fallot
Medication to close PDA
Indomethacin
Medication to keep PDA open
Prostaglandin E
Eisenmenger syndrome
L to R shunt -> pulmonary HTN -> RVH -> reverses into R to L shunt (becomes cyanotic)
Continuous “machinery” murmur at L 2nd IC space
PDA
Pathognomonic injuries for child abuse
Multiple simultaneous facial injuries Bruises in shapes of objects Bruises over trunk and abdomen Multiple burns (esp in shape of objects) Rib or skull fractures Long bone fractures in non-ambulatory kids
Physician obligated to report
Child abuse Elder abuse (>60)