A patient with CAD is asking the nurse about the mechanisms of the heart.
It would be appropriate for the nurse to respond that when the left ventricle contracts, it pushes blood through the semilunar valve to the:

Choice A rationale:

Repeating the potassium level is not the first action to take. The nurse already has a recent lab value.

Choice B rationale:

The nurse should withhold the medication. The normal range for potassium is 3.5-5.0 mEq/L. A level of 5.5 mEq/L is high, so giving more potassium could lead to hyperkalemia.

Choice C rationale:

Monitoring for paresthesia is important in hyperkalemia, but it is not the first action. The nurse should first prevent further increase in potassium levels.

Choice D rationale:

Administering a hypertonic solution is not relevant in this situation. It does not directly address the high potassium level.

Choice A rationale:

Low blood pressure (BP) is a symptom of hypovolemic shock due to decreased blood volume, but the pulse rate typically increases as the body tries to compensate for the low BP, not decrease.

Choice B rationale:

Hypovolemic shock is characterized by low BP due to loss of blood or fluid volume and a high pulse rate as the body tries to compensate for the decreased blood flow.

Choice C rationale:

High BP is not typically associated with hypovolemic shock. Instead, BP is usually low due to decreased blood volume.

Choice D rationale:

High BP is not typically a symptom of hypovolemic shock. While the pulse rate may be high as the body tries to compensate for low blood volume, the BP is usually low.