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, βtearingβ 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