Social Sciences > QUESTIONS & ANSWERS > PSG Boards Exam Prep (All)
PSG Boards Exam Prep What is Atrial Fibrillation? - ✔✔In atrial fibrillation, the electrical activity of the heart is uncoordinated, with electricity traveling about the upper chambers in a chao ... tic fashion, causing the upper chambers to quiver (like a "bag of worms") and contract inefficiently or not at all. Common in elderly and those with heart disease. What is Atrial Flutter? - ✔✔Atrial flutter causes a rapid but coordinated electrical stimulation of the upper chamber of the heart, often leading to a rapid pulse What is sinus arrhythmia? - ✔✔Cyclic changes in the heart rate during breathing. Common in children and often found in normal, healthy adults. A pacemaker may be required for treatment. What is sinus tachychardia? - ✔✔The sinus node sends out electrical signals faster than usual, speeding up the heart rate. This is a normal response to exercise. What is a Premature ventricular contraction (PVC)? - ✔✔An electrical signal from the ventricles causes an early heartbeat that generally goes unnoticed. The heart then seems to pause until the next beat of the ventricle occurs in a regular fashion. These are commonly detected in normal, healthy adults. What is tachycardia? - ✔✔Fast heartbeat, over 100 beats per minute What is bradycardia? - ✔✔Slow heartbeat, less than 60 beats per minute What is heart block? - ✔✔Nearby tissue may block the sinus node's signals before they reach the atria and ventricles through the proper channels. What are Supraventricular arrhythmias? - ✔✔Arrhyth [Show More]
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