week 8 part 2

Question 1

cardiac dysrhythmias

Answer 1

• deviation from normal cardiac rate or rhythm
• due to altered conduction or altered automaticity
• cause by electrolyte or metabolite abnormalities

Question 2

tachycardia

Answer 2

HR faster

Question 3

bradycardia

Answer 3

HR slower

Question 4

atrial fibrillation

Answer 4

heart still functions as a pump

Question 5

ventricular fibrillation

Answer 5

heart does not function as an effective pump

Question 6

premature ventricular contraction

Answer 6

QRS occurs sooner
- appear wider than normal QRS and followed by compensatory pause

Question 7

1-degree heart block

Answer 7

all atrial impulses are conducted to the ventricles but with delay

Question 8

2 degree heart block

Answer 8

only some atrial impulse are conducted

Question 9

3 degree

Answer 9

no atrial impulse are conducted atria and ventricle contract independently resulting in independent P waves and QRS waves

Question 10

chronic heart failure

Answer 10

supply can no longer keep up with demand

Question 11

systolic dysfunction

Answer 11

ventricles cant pump hard enough during systole
- due to weakened ventricle
-lower ejection fraction

Question 12

diastolic dysfunction

Answer 12

not enough blood fills into the ventricle during diastole
due to stiffened ventricles

Question 13

left-sided heart failure

Answer 13

1. left ventricle weaken and cannot empty
2. decreased CO
3. decreased renal blood flow stimulates renin-angiotensin and aldosterone secretion
4. backup of blood into the pulmonary vein
5. high pressure in pulmonary ca

Question 14

right-sided HF

Answer 14

1. right ventricle weakens ans cannot empty
2. decreased CO to system
3. decreased renin and aldosterone secretion
4. back up of blood into systemic circulation
5. increased venous pressure results in edema in legs and liver
6. very high venous pressure causes distended neck vein and cerebral edema