Cardiovascular System Flashcards
What is the relationship of the kidneys to the cardiovascular system?
(3)
1) The kidneys filter about 1L of blood per minute.
2) If cardiac output is decreased, the amount of blood going through the kidneys is decreased; urinary output is decreased. Therefore, a decreased urinary output may be a sign of cardia problems
3) When the kidney’s produce and excrete 0.5mL of urine/kg of body weight or average 30mL/hour output,, the blood supply is considered to be minimally adequate to perfuse the vital organs.
Angina is caused by
Myocardial ischemia.
Which cardia medications would be appropriate for acute angina?
1)Nitroglycerin- causes dilation of the coronary arteries allowing more 02 to get to the heart muscles.
What does Digoxin do to the heart?
It increases the strength and contractility of the heart muscle.
What does Atropine do to the heart?
It increases heart rate by blocking vagal stimulation, which suppress the heart rate.
What does Propranolol do to the heart?
Used for long term management for stable angina because it acts as a beta blacker to control vasoconstriction.
What is important to remember when administering medications and treatments in patients with myocardial infarctions?
M-Morphine
0-Oxygen
N- Nitroglycerin
A- Aspirin
What are the risk factors for HTN?
Hereditary Race Age Alcohol abuse Increased salt take Obesity Use of oral contraceptive
What is the number one cause of stroke in HTN clients?
Noncompliance with medication regieme
What is the normal adult BUN
10-20
What is the normal creatinine level
0.6-1.2 mg/dl
How does heparin work?
Prevents the conversion of fibrinogen to fibrin and
prevents prothrombin to thrombin thereby preventing clot formation.
What is the antidote for heparin?
protamine sulfate
What is the antidote for Coumadin?
Vitamin K
Normal therapeutic range for PT and PTT?
1.5-2.5
What is cardioversion?
Delivery of synchronized electrical shocks to the myocardium
what are synchronous or demand pacemakers?
Pacemaker fires only when the clients heart rate falls below a rate set on the generator