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27 Cards in this Set

  • Front
  • Back
Ventricular extrasystole
Wide and abnormal QRS complex and an abnormal T wave. Deep inverted T wave
P wave
Upright in all leads except VR and VL (normally)
Notched or bifid P wave
Left atrial hypertrophy
Peaked P waved
Right atrial hypertrophy
PR interval
120-220ms
Normal ECG : QRS and R wave
QRS complex upright in leads I-III
R wave tallest in lead II
If lead I, II, and AVL are postive what is the axis?
The axis will be normal
P mitrale is?
P mitrale is left atrial enlargement shown in the ECG as notched P
What are the mitral leads?
I, II, AVL. Biphasic is V1 with a dominant negative component
P pulmonale is?
Right atrial enlargement, P wave more than 2.5mm in leads II, III, AVF
When the S wave is greater than the R wave in lead I?
Right axis deviation is present
When the depth of S wave exceeds the height of R in lead II?
Left axis deviation is present
What is meant by R-wave progression?
It is that the R and S waves in leads V1-V6 change in height progressively in the leads. Meaning that V1 should be a smal R wave and a deep S wave. In lead V6 there shoudl be tall R waves and no S wave
Where is the transition point of S wave prodominancy to R wave in the precordial leads, in a patient with Chronic lung disease
We see a clockwise rotation to the transition is V5 or V6
Dominant R wave in V1 indicates two things?
RVH or a true posterior infarction
If the QRS is longer than 120ms what does it mean, 2 things?
It could mean that the ventricules have been polarized from a ventricular rather than a supraventricular focus or there is an abnormality of conduction within the ventricles.
Q waves?
The noraml depolarization of the interventricular septum from left to right causes a small 'septal' Q wave in any of leads II, VL, or V5-V6. Less than 3mm deep and less than 1mm across.
More than 1/3 of R is a significant Q wave
ST segment. What does elevation mean? How about depression?
ST segment elevation - Acute MI
ST segment depression - Ischemia or the effect of digoxin
High take-off ST segment?
ST segment elevation following an S wave in leads V2-V5
Horizontal ST segment depression of more than 2mm?
Indicates ischemia
T wave? what does it look like in the leads
Normal ECG - T wave is always inverted in AVR and often in V1.
Always upright in the other leads
In pulmonary embolism and in RVH where do we see T wave inversion?
V2-V2 as well as in V1
U wave?
Hypokalemia
Peaked T waves?
Hyperkalemia
QT interval
QTc = QT / root(R-R interval)
Cardiax axis:
Tall people?
Fat people and pregnancy?
Tall people: Minor Right axis deviation
Fat people and pregnancy: Minor Left axis deviation
Frequent ventricular extrasystoles?
Exclude LV dysfunction and anemia