The patient's ECG indicates that _____. A action potentials are passing from his atria into his ventricles before they are supposed to B he is suffering from ventricular fibrillation C the patient is suffering from a first degree cardiac block D the patient has atrial fibrillation E the patient is suffering from a second degree cardiac block
The patient's ECG indicates that _____.
| A |
action potentials are passing from his atria into his ventricles before they are supposed to |
|
| B |
he is suffering from ventricular fibrillation |
|
| C |
the patient is suffering from a first degree cardiac block |
|
| D |
the patient has atrial fibrillation |
|
| E |
the patient is suffering from a second degree cardiac block |
Electrocardiography -- The process by which electrocardiogram is done defined as electrocardiography .
E.C.G. or E.K.G.--Electrocardiogram , a recording of electrical signals or action potentials from the heart to check by placing of electrodes on the chest and limbs ,on the surface of chest of the heart . The changes in the electrode potential are recorded on a graph called as waves by a machine
Indication of E.C.G. -Mostly electro cardio gram done to confirm the diagnosis with a symptoms of heart disease ,like chest pain ,heaviness on the chest ,restlessness ,ghabrahat , profuse sweating and difficulty in breathing .
Para meters seen in a normal E.C.G. -- A normal E.C.G. - rate , rhythm, axis ,waves ,intervals and complexes segments and has twelve leads
1- Standard Leads -- These are of two types i -Limb leads -LI ,LII. LIII ii - augmented leads aVr, aVl and aVf .
2 -Chest leads - V1 , V2 , V3 ,V4 ,V5 , V6
Waves are p ,q ,r , s ,t and u ,if waves are large presented by capital letter and vice versa .
P wave present atrial depolarization
qrs complex shows ventricular depolarization
t wave - ventricular repolarization
Atrial repolarization deflection is very small and unable to create marked changes in an E.C.G.
Complexes -- q r s complex made up of q wave r wave and s wave basically form the complex.
Interval - pr interval
qt interval
Segment - s t segment
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