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? blackboard.uiwtx.edu oar... https://blackboar.. https://blackboar.. » Anatomy and F. Amazon.com: ma.. Note how half of the P waves are not followed by the QRS complex and T waves while the other half are.t Question: What would you expect to happen to heart rate (pulse)? (a) Second-degree (partial) block Note the abnormal electrical pattern prior to the QRS complexes. Also note how the frequency between the QRS complexes has increased Question: What would you expect to happen to heart rate (pulse)? b) Atrial fbrillation Note the unusual shape of the QRS complex, focusing on the Question: What woukd you expoct to happen to heart rate (pulse)? (c) Ventricular tachycardia Note the total lack of normal electrical activity Question: What would you rate (pulse)? (d) Ventricular fibrillation Note that in a third-degree block some of the impulses initiated by the SA node do not reach the AV node while others do. Also note that the P waves are not followed by the QRS complex. Question: What would you expect to happen to heart rate (pulse)? (e) Third-degree block

Explanation / Answer

It means that there is abnormal heart beat which means that in this case there is no relaxation of atria after the contraction which signified with P wave. The heart beat will be fast as it is not completed. And there will be skipping of heart beats in between as well. In this case the pulse rate will be significantly high as we can see that the P wave is tapered while the rest are so frequent than usual results in contraction of the wave as QRS and T are so near. The pulse rate will be slow due to widening of the P as well as QRS and T waves. It means that the heart rate is significantly slow and a flat line shows the heart rate can be stopped .

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