4 Questions
What is the primary cause of angina pectoris?
Inadequate supply of oxygenated blood to the heart muscle
How does nitroglycerin help reduce the workload on the heart?
By dilating blood vessels
What is the characteristic position maintained by someone experiencing dyspnea?
Tripod position
What is a distinguishing feature of Flail chest?
Instability of the chest wall due to multiple rib fractures
Study Notes
Cardiovascular System
- Angina pectoris is primarily caused by atherosclerosis, which is the narrowing of the coronary arteries, reducing blood flow to the heart muscle.
Nitroglycerin and Heart Workload
- Nitroglycerin helps reduce the workload on the heart by dilating the coronary arteries and peripheral vessels, increasing blood flow and oxygen delivery to the heart muscle.
- This reduces the Heart's Oxygen Demand, relieving the symptoms of angina pectoris.
Dyspnea
- A person experiencing dyspnea typically maintains a characteristic position, sitting upright and leaning forward, in an attempt to relieve respiratory distress.
Flail Chest
- A distinguishing feature of Flail chest is a segment of the chest wall that is detached from the rest of the thoracic cage and moves paradoxically, opposite to the normal breathing motion, due to the fracture of two or more ribs.
Test your knowledge on common cardiac emergencies such as angina pectoris, myocardial infarction, the use of nitroglycerin, and recognizing the tripod position in individuals experiencing dyspnea.
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