A nurse is teaching a class about pulmonary circulation. The nurse should include that blood flows from the heart to the lungs from the right ventricle starting from which of the following locations?
Pulmonary artery
Left atrium
Left ventricle
Pulmonary veins
The Correct Answer is A
A) Pulmonary artery:
The pulmonary artery carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation. This is the correct starting location for blood flow from the heart to the lungs in the pulmonary circulation.
B) Left atrium:
The left atrium receives oxygenated blood from the pulmonary veins and pumps it into the left ventricle, not from the right ventricle to the lungs.
C) Left ventricle:
The left ventricle pumps oxygenated blood into the systemic circulation, not from the right ventricle to the lungs.
D) Pulmonary veins:
The pulmonary veins carry oxygenated blood from the lungs to the left atrium of the heart, not from the right ventricle to the lungs."
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) "Take the medication with a full glass of water":
This is the correct answer. Docusate is a stool softener used to treat constipation by promoting the incorporation of water into the stool, making it softer and easier to pass. Taking docusate with a full glass of water helps facilitate its action by ensuring hydration and aiding in the softening of stool.
B) "Take this medication on an empty stomach":
Taking docusate on an empty stomach is not necessary. It can be taken with or without food. The primary consideration is to take it with an adequate amount of water to facilitate its stool-softening effect.
C) "Do not take this medication before bedtime":
There is no specific contraindication to taking docusate before bedtime. The timing of administration can vary based on individual preferences and bowel habits. Some individuals may prefer to take it before bedtime to promote a bowel movement in the morning, while others may take it at different times of the day.
D) "Expect abdominal pain with this medication":
Abdominal pain is an uncommon side effect of docusate. While it may occur in some individuals, it is not a common or expected reaction to the medication. Most people tolerate docusate well, but gastrointestinal side effects such as mild abdominal cramping, nausea, or diarrhea may occur in some cases.
Correct Answer is ["32"]
Explanation
Find the concentration of heparin in the solution:
Total heparin (units): 25,000 units
Volume of solution (mL): 500 mL
Heparin concentration (units/mL) = Total heparin (units) / Volume of solution (mL)
Heparin concentration (units/mL) = 25,000 units / 500 mL = 50 units/mL
Set up the flow rate equation:
Desired heparin infusion rate (units/hr): 1600 units/hr
Heparin concentration in solution (units/mL): 50 units/mL
Flow rate (mL/hr): We need to solve for this
Flow rate (mL/hr) = Desired heparin infusion rate (units/hr) / Heparin concentration (units/mL)
Calculate the flow rate (mL/hr):
Flow rate (mL/hr) = 1600 units/hr / 50 units/mL = 32 mL/hr (round to nearest whole number as requested)
Therefore, the nurse should set the IV pump to deliver approximately 32 mL/hr.
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