A patient is being started on oxygen therapy for an oxygen saturation level of 84% on room air. The nurse realizes that oxygen will enter into the blood stream through which of the following physiological processes?
1. osmosis
2. diffusion
3. concentration gradient
4. fluid shift
2
Rationale: Oxygen crosses alveolar– capillary membranes by diffusion, combines with hemoglobin, and is transported via the pulmonary vein to the left side of the heart. After the heart pumps oxygenated blood into the vascular system where it is transported to cells, oxygenated blood then leaves the capillaries by diffusion and enters cells. Oxygen does not enter the blood stream through osmosis, a concentration gradient, or a fluid shift.
You might also like to view...
If you give two tablets labeled 0.6 mg, what is the total dosage you will administer?
What will be an ideal response?
Which is an outcome of decentralized staffing?
A) Increased fairness to employees through consistent, objective, and impartial application B) Cost-effectiveness through better use of resources C) Greater manager autonomy to control more closely the staffing on the units, resulting in an increase in self-esteem and teamwork D) Increased availability of data for monitoring the effect of staffing size and composition, quality of care, and costs
When moisture is added to a heat or cold application, it
A. decreases the effect of the application. B. has no effect on the application. C. intensifies the effect of the application. D. reduces the risk of injury.
Ordered: Dopamine 400 mg in 250 mL D5W to deliver 4 mcg/kg/min to a 165 lb patient.The infusion pump should be set at ________. (Round to the nearest tenth)
Fill in the blank(s) with the appropriate word(s).