Final answer:
The patient with a magnesium level of 1.6 should be transferred to the med surg unit as hypomagnesemia can be managed there, while the other patients have conditions that require more specialized telemetry or cardiac monitoring.
Step-by-step explanation:
From the scenarios provided, the patient that should be transferred to the medical-surgical (med surg) unit is the one with a magnesium level of 1.6. The normal range for magnesium is typically around 1.7 to 2.2 mg/dL, implying that this patient has hypomagnesemia which can be managed in a med surg unit. In contrast, the patient scheduled for a cardiac catheterization next morning should likely remain in telemetry for close monitoring, the one with a digoxin level of 2.4 is showing a level that is higher than the normal therapeutic range (0.5 to 2.0 ng/mL), suggesting digoxin toxicity and the necessity for closer cardiac monitoring, and the patient with chest discomfort during a stress test may require more immediate cardiac care and should not be moved to a less acute unit until they are stable and cleared by the cardiology team.