The cardiac cycle consists of two phases; a period where the heart muscle is relaxed, called <u>diastole</u>, and a period of contraction, called <u>systole</u>.
These are then divided into four stages. These are;
1.<u>Ventricular Filling Period (VPF)</u>
2. <u>Isovolumetric Contraction Period (ICP)</u>
3. <u>Ventricular Ejection Period (VEP)</u>
4.<u> Isovolumetric Relaxation Period (IRP)</u>
At rest, cardiac diastole lasts for approximately 0.5 seconds, and cardiac systole lasts approximately 0.3 seconds to complete. However, during exercise, when the heart rate is increased the time period of <u>diastole</u> , especially, is reduced.
Explanation:
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Answer:
25 micrograms per cubic meter
Explanation:
You are dispatched to a residence for a 59-year-old male with an unknown emergency. when you arrive, you find the patient sitting on the couch. he is conscious, is noticeably diaphoretic, and complains of dizziness and weakness. during your assessment, you note a large, well-healed vertical scar in the center of his chest and a small bulge just under the skin in the upper left part of his chest. his blood pressure is 90/50 mm hg, pulse is 44 beats/min and weak, and respirations are 24 breaths/min and unlabored. what is the most likely cause of this patient's condition?
- Artificial pacemaker failure
