A nurse is preparing to administer a metered dose inhaler (MDI) medication to a client.
Which of the following actions should the nurse take?
Ask the client to hold their breath for 2 seconds after inhalation.
Wash the MDI canister in warm water after each use.
Ask the client to inhale the medication quickly for 1 second.
Shake the MDI prior to administration.
The Correct Answer is D
Choice A rationale
Clients should be instructed to hold their breath for about 10 seconds after inhalation, not 2 seconds. This allows the medication to reach deeper into the lungs.
Choice B rationale
The MDI canister should not be washed after each use. Instead, it should be cleaned regularly to ensure proper functioning and avoid medication buildup.
Choice C rationale
Clients should be instructed to inhale the medication slowly and deeply over a few seconds, rather than quickly for 1 second. This ensures proper delivery of the medication to the lungs.
Choice D rationale
Shaking the MDI prior to administration is essential. This action mixes the medication evenly, ensuring that the correct dose is delivered with each puff.
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Correct Answer is C
Explanation
Choice A rationale
Toxic levels refer to concentrations of a medication that are high enough to cause harmful effects or poisoning. This is not related to the lowest serum concentration.
Choice B rationale
Peak levels are the highest concentration of a medication in the bloodstream after administration. This occurs after the drug is absorbed and distributed.
Choice C rationale
Trough levels occur when the medication is at its lowest concentration in the bloodstream, typically just before the next dose is due. Monitoring trough levels helps ensure therapeutic effectiveness while avoiding toxicity.
Choice D rationale
Half-life refers to the time it takes for the concentration of a drug in the bloodstream to decrease by half. It is not directly related to the lowest serum concentration at a specific point in time.
Correct Answer is A
Explanation
Choice A rationale
Colonoscopy is the recommended test for screening for rectal cancer. It allows for direct visualization of the entire colon and rectum, enabling the detection and biopsy of polyps or
suspicious lesions. It is the gold standard for colorectal cancer screening.
Choice B rationale
Endoscopic retrograde cholangiopancreatography (ERCP) is used to diagnose and treat conditions of the bile ducts, pancreas, and gallbladder. It’s not typically used for colorectal
cancer screening.
Choice C rationale
An upper GI series involves X-rays of the upper gastrointestinal tract (esophagus, stomach, and duodenum) after swallowing a contrast medium. This test does not visualize the
lower GI tract, including the colon and rectum, and is therefore not suitable for rectal cancer screening.
Choice D rationale
Upper GI endoscopy allows for direct visualization of the upper gastrointestinal tract but does not reach the colon and rectum. Hence, it is not used for screening rectal cancer