A client is currently prescribed pantoprazole, and the nurse is reviewing the client's labs (shown below). Which lab result is of most concern to the nurse?

Laboratory Test	Result	Normal Range
Sodium	146 mEq/dL	135-145 mEq/L
Calcium	8.2 mg/dL	8.4-10.2 mg/dL
Magnesium	1.2 mg/dL	1.6-2.2 mg/dL
Gastric pH	6	1-4

A) Touch the tip of the bottle to the lacrimal duct: Touching the tip of the bottle to the lacrimal duct is not a recommended practice when administering eye drops. This could introduce bacteria into the eye or nose, leading to potential infection. The goal is to administer the drops without contamination, and the tip of the bottle should never touch the eye or any part of the face.

B) Apply pressure to inner canthus for 2 minutes: Applying pressure to the inner canthus (the corner of the eye near the nose) for about 2 minutes after administering ophthalmic drops is a key step when using systemically acting eye medications like propranolol. This helps to prevent the systemic absorption of the medication through the nasolacrimal duct, reducing the risk of systemic side effects such as bradycardia or hypotension. This step ensures that the medication stays localized in the eye.

C) Have client lie down or tilt the back of their head: While lying down or tilting the head back may help the client instil the drops more comfortably, it is not a required step for the proper absorption or effectiveness of eye drops. The key to effective administration lies in positioning the drop in the correct part of the eye and minimizing systemic absorption, which is achieved by applying pressure to the inner canthus, not necessarily by tilting the head.

D) Have client pull down their lower eyelid: Pulling down the lower eyelid is a standard step in administering eye drops, as it creates a small pocket to hold the drop. However, it does not specifically address the concern for reducing systemic absorption of a medication like propranolol. The primary step for preventing systemic effects is applying pressure to the inner canthus after administration, making this less relevant for this specific question.

Convert micrograms (mcg) to milligrams (mg):

The prescribed dose is 200 mcg.

We know that 1 mg = 1000 mcg.

Therefore, 200 mcg = 200 / 1000 = 0.2 mg.

Calculate the number of tablets:

Each tablet contains 0.05 mg of levothyroxine.

The desired dose is 0.2 mg.

We can use the following formula: (Desired dose) / (Tablet strength) = Number of tablets

(0.2 mg) / (0.05 mg/tablet) = 4 tablets