dysrhythmias

2. ventricular depolarization leading to the contraction of the ventricles, lasting 0.04-0.12 seconds
5. heart rate over 100 bpm, initially increases cardiac output, then decreases it over time
6. chaotic rhythm with no clear p wave, causing the atria to quiver
7. impulse from sa node, leading to atrial contraction
11. the point where the qrs complex transitions to the st segment
13. techniques such as carotid massage to slow down heart rate during supraventricular tachycardia
14. time between atrial depolarization and ventricular conduction, lasting 0.12-0.20 seconds
15. drug used to treat supraventricular tachycardia, helping to reset the rhythm
16. age, hypokalemia, hypomagnesemia, stress, nicotine, alcohol, and mi
20. 140-180 bpm due to repetitive firing of an irritable ventricular ectopic focus
21. rapid heart rhythms exceeding 100 bpm, increasing myocardial oxygen demand and reducing perfusion
23. duration from the beginning of the q wave to the end of the t wave
24. life-threatening rhythms like pvcs, v-tach, and v-fib
26. asynchronized countershock used to reset ventricular rhythms, primarily for v-fib and v-tach
27. slight variations in heart rate with breathing, such as increased rate during inspiration
28. heart rate less than 60 bpm due to excessive vagal stimulation
29. sharp, tearing, ripping pain in the chest or back

1. life-threatening electrical chaos in ventricles, resulting in no cardiac output or pulse
3. increased irritability of ventricular cells, seen as early qrs complexes followed by a pause
4. synchronized countershock used to restore normal rhythm during an atrial dysrhythmia
8. rapid heart rate between 100-280 bpm with invisible p waves, often requiring adenosine or vagal maneuvers
9. the resting phase, begins at the j point and ends at the start of the t wave
10. full cardiac arrest with no electrical activity, requiring immediate cpr and epinephrine
12. two normal beats followed by one premature complex, followed by a pause, repeating the cycle
17. abnormal impulse generation, often with abnormal p waves, including pac, svt, and afib
18. fainting or sudden loss of consciousness, commonly seen in both tachycardia and bradycardia
19. premature atrial contractions, often caused by stress, caffeine, and alcohol
22. drug used to treat symptomatic bradycardia by increasing the heart rate
25. alternating normal and premature beats, followed by a pause, repeating the cycle