4. Drugs Affecting the Cardiovascular system Flashcards
The Cardiovascular system functions to carry 5 things. What are they?
- Oxygen
- Nutrients
- Hormones
- Antibodies
- Waste from cell metabolism
The cardiovascular system depends on what 3 things to function?
Heart’s ability to pump
Patency and functions of blood vessels
- If vessels don’t function, the blood will not reach the whole circulatory system
Quality and quantity of blood
- Sepsis, anemia,
What is heart failure? What are the kinds of heart failure?
The heart is unable to pump blood in sufficient amounts from the ventricles to meet the body’s metabolic needs
Includes: left ventricular failure and right ventricular failure
What are symptoms of left ventricular failure?
pulmonary edema, dyspnea, or cough
What are symptoms of right ventricular failure?
pedal edema, jugular venous distention, ascites, and hepatic congestion
What are the 3 main causes for heart failure?
-Cardiac defect
- Defect outside the heart
- Supraventricular dysrhythmia
2 cardiac defects that can cause heart failure include…
Myocardial infarction and Valve deficiency
Myocardial infarction is…
A heart attack (#1 reason for heart failure)
Occurs when one or more areas of the heart are not receiving enough oxygen
3 defects outside the heart that can cause heart failure include…
- Coronary artery disease
- Pulmonary hypertension
- Diabetes
Supraventricular dysrhythmias are defined as…
Abnormalities in the rhythm of the heart
2 types of supraventricular dysrhythmias that can cause heart failure include…
- Atrial fibrillation
- Atrial flutter
The cardiac conduction system occurs in what order?
- SA node
- AV node
- Bundle of HIS
- right bundle branch
- left bundle branch
- Purkinje fibres
What do inotropic cardiac agents control?
The force or energy of muscular contractions
What do chronotropic cardiac agents control?
The rate of the heartbeat
What do dromotropic cardiac agents control?
the conduction of electrical impulses
