Find your answers, solutions and more...

We made it much easier for you to find exactly what you're looking for on ScieMce. Enjoy our search engine "Clutch." More about bancfirst small business online banking.


  • PhD Member
  • ******
Why do vasodilators administered via the intravenous route cause an increase in intrapulmonary shunting and a decreased Pao2?

A. because they come in contact with all the vessels of both systemic and pulmonary vasculatures
B. because they often cause pooling of venous blood in the systemic venous circulation
C. because they dilate vessels of both ventilated and unventilated alveoli in the pulmonary vasculature
D. because they cause a decreased cardiac output as an untoward effect

Marked as best answer by NetworkHinch

  • PhD Member
  • ******
A. Incorrect response: See explanation C.
B. Incorrect response: See explanation C.
C. Correct response: In contrast to inhaled NO (iNO), intravenous vasodilators (e.g., sodium nitroprusside and nitroglycerin) are not selective vasodilators. Although intravenous vasodilators lower pulmonary artery pressure, they also lower systemic blood pressure. Moreover, these agents increase blood flow to both ventilated and unventilated alveoli, resulting in increased intrapulmonary shunting and a lower Pao2.
D. Incorrect response: See explanation C.

Questions you may also like

Related Posts

» The advantages of delivering drugs by oral or nasal inhalation include which of the following?
» If a drug is ordered with the Latin abbreviation qid, it should be administered
» Your patient has an order for 2 puffs of albuterol MDI q3h, and it was last given at 0700. When should it be administered next?
» If a physician desires a drug to be administered as needed, he or she should use which of the following abbreviations?
» If a drug is ordered with the Latin abbreviation ac, it should be administered

  • PhD Member
  • ******
Props to you, cheers.