CARDIOLOGY -ECG BASICS Flashcards
Interpretation :
What does P waves indicate ?
Atrial depolarization
Interpretation :
What does PR interval indicate ?
-Atrial depolarization
-Av nodal delay
-Spread of depolarization wave up to Av node
Interpretation :
What does QRS complex indicate ?
Ventricular depolarisation
Interpretation :
What does ST segment indicate ?
time during which the ventricles still contracting to empty the blood
Interpretation :
What does T wave indicate ?
Ventricular repolarization
Inferior region of the heart is recorded by which leads ?
Lead II ,Lead III , aVF
Lateral region of the heart is recorded by which leads ?
Lead I , aVL , V5,V6
Anterior region of the heart is recorded by which leads ?
V3 ,V4
Septum of the heart is recorded by which leads ?
V1 ,V2
Lead I consists of which limbs ?
Left Arm and Right Arm
Lead II consists of which leads ?
Right Arm and Left Foot
Lead III consists of which leads ?
Left Arm and Left Foot
If there is changes in leads V3 and V4 , which artery is suspected to be occluded ?
Anterior wall :
Left Anterior Descending Coronary Artery
If there is changes in leads I ,aVL ,V5 and V4 , which artery is suspected to be occluded ?
Lateral wall :
Left Anterior Descending or Circumflex Coronary Artery
If there is changes in leads II , III and aVF , which artery is suspected to be occluded ?
Right Coronary Artery
In atrial fibrillation patient , what findings did you suspect ?
-no P waves
-variable R-R
If there is findings of ST elevation ,what else can you suspect instead of MI ?
Pericarditis
Left ventricular hypertrophy ,benign early repolarization
How to identify there is ST elevation?
compare J point to P-R segment
If the patient have hyperkalaemia , what findings did you suspect ?
Moderate
- tall T waves
Severe
-tall T waves
-widened QRS
-P wave dissappeared
If there is normal axis deviation , what findings did you suspect on the leads
Positive reflection on Lead I and Lead II
If there is left axis deviation , what findings did you suspect on the leads
Positive reflection on Lead I and Negative reflection on Lead II
If there is right axis deviation , what findings did you suspect on the leads
Negative reflection on Lead I , Positive or Negative reflection on Lead II
