> EKG: 12 lead EKG quick interpretation of V1-V6SSAALL: · Elevations matched with their classic location of MI: V1 Septal V2 Septal V3 Anterior V4 Anterior V5 Lateral V6 Lateral
> Pericarditis: EKG "PericarditiS": PR depression in precordial leads. ST elevation.
> Depressed ST-segment: causesDEPRESSED ST: Drooping valve (MVP) Enlargement of LV with strain Potassium loss (hypokalemia) Reciprocal ST- depression (in I/W AMI) Embolism in lungs (pulmonary embolism) Subendocardial ischemia Subendocardial infarct Encephalon haemorrhage (intracranial haemorrhage) Dilated cardiomyopathy Shock Toxicity of digitalis, quinidine
> ECG: left vs. right bundle block "WiLLiaMMaRRoW": W pattern in V1-V2 and M pattern in V3-V6 is Left bundle block. M pattern in V1-V2 and W in V3-V6 is Right bundle block. · Note: consider bundle branch blocks when QRS complex is wide.
> ST elevation causes in ECGELEVATION: Electrolytes LBBB Early repolarization Ventricular hypertrophy Aneurysm Treatment (eg pericardiocentesis) Injury (AMI, contusion) Osborne waves (hypothermia) Non-occlusive vasospasm
> Einthoven's Triangle: organization Corners are at RA (right arm),LA (left arm), LL (left leg). Number of L's at a corner tell how many + signs are at that corner [egLL is ++]. Sum of number of L's of any 2 corners tells the name of the lead [egLL-LA is lead III]. For reference axes, the negative angle hemisphere is on the half of the triangle drawing that has all the negative signs; positive anglehemisphere contains only positive signs.
> Dominant R wave in V1 WORD WPW,Old MI,RBBB,Dextrocardia