Medical Procedures & Techniques Flashcards

Which blood collection tube (by color) is used for prothrombin time (PT/INR) testing?

Answer: Light blue top

The light blue top tube contains sodium citrate, which is required for coagulation studies including PT/INR.

When applying a transdermal medication patch, what must the medical technician do before applying the new patch?

Answer: Remove the old patch and cleanse the skin before applying the new one

The old patch must be removed and the skin cleansed to prevent overdose from residual medication before the new patch is applied.

A patient is prescribed ear drops. Which technique should be used to straighten the ear canal in an adult?

Answer: Pull the pinna up and back

In adults, pulling the pinna up and back straightens the ear canal, allowing the drops to reach the tympanic membrane.

During oxygen therapy via nasal cannula, what is the typical flow rate range?

Answer: 1–6 L/min

Nasal cannula delivers oxygen at 1–6 L/min; higher flow rates are delivered via masks.

When removing sutures, the correct technique involves cutting the suture:

Answer: Close to the skin on one side and pulling through

Cutting close to the skin on one side prevents dragging the contaminated external suture through the tissue during removal.

A patient with dysphagia is to receive oral medications. Which modification is appropriate ONLY with a physician's order?

Answer: Crush medications and mix with soft food

Crushing medications requires a physician's or pharmacist's order because some medications are contraindicated for crushing (extended-release, enteric-coated).

Which antiseptic solution is contraindicated for wound cleansing because it is cytotoxic to healing tissue?

Answer: Povidone-iodine (full strength)

Full-strength povidone-iodine is cytotoxic to fibroblasts and delays wound healing; normal saline or diluted solutions are preferred.