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Compare the Old and New ECG

21 bytes removed, 18:36, 27 January 2010
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==Change in rhythm==
Example: new atrial fibrillation. Atrial fibrillation occurs in ten percent of elderly people (>70 year) without clinical symptoms. Therefore atrial fibrillation in acute dyspnoic dyspneic patients does not prove atrial fibrillation -induced cardiac decompensation. Also other causes (e.g. cardiac ischemia, pneumonia) should be considered. Previous ECG registrations ECGs could provide additional information.
Example: bradycardia. New sinusbradycardia sinus bradycardia of 50 beats per minute (bpm) may cause dizziness, ; however, long -existing bradycardias are often without symptoms. Therefore it is important to know about someones the patient's normal frequency.
==Conduction time==
An increase in PQ time may be seen in elderly patients, but may also be caused by the use of medication or by ischemia. Broadening of the QRS complex may also be caused by medication or ischemia. An increase in QTc time may be caused by medication, but may also be heridetaryhereditary. Comparison of a previous made ECG registration with new registration ECG may provide the clue.
==Heart axis==
Ischemia may cause a change in the heart axis; on the other hand, however a deviated heart axis caused by left anterior fascicular block may be have already been present for years already at the time the ECG was made (and will would remain for the rest of life). Again, a previous ECG differentiates between old and new changes.
==Pathological Q's==
Hallmark of the comparison between old and new ECG are pathological Q's. New pathologische pathological Q's provide evidence for the occurence occurrence of a myocardial infarction in the mean time.
==Increase R wave==
'''Decrease''' of the R wave may a be a sign of occured an infarction. Tamponade, cardiomyopathy and increased bodysize body size also decrease the R wave.
'''Increase''' of the R wave indicates hypertrofia hypertrophy of the left ventricle (leads V5-V6), or a posterior infarction (V2-V3) or a loss of body weight.
==the ST segment==
New elevation of the ST segment indicates a an acute myocardial infarction. Chronic elevation of the ST segment may be caused by cardiac aneurysmata and aneurysms or long existing -standing (several weeks) of pericarditis.
==T wave==
T top wave inversion is can be caused by ischemia, disturbances in electrolytes and or stress. Often no distinction can be made between these causes. T top wave inversion indicates that something is possible possibly wrong, however and further investigation is needed.
[[Category:ECG Course]]


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