The practical nurse (PN) notes that the pulse rate of a client newly started on levothyroxine sodium has increased from 98 to 120 beats/minute since the initial dose was administered the previous day. Which action should the PN implement?

Inform the client that the healthcare provider will need to increase the prescribed dose of levothyroxine sodium.

Hold the next dose of levothyroxine sodium and notify the charge nurse of the change in the client's pulse rate.

Explain to the client that this is an expected side effect and administer the next dose of levothyroxine sodium as prescribed.

Administer the scheduled dose of levothyroxine sodium unless the client's blood pressure is greater than 140/90 mm Hg.