Final answer:
Digoxin toxicity can cause nausea, vomiting, diarrhea, and changes in heart rate and blood pressure.
Step-by-step explanation:
Digoxin toxicity can manifest in various ways, including gastrointestinal symptoms such as nausea, vomiting, and diarrhea. In addition, digoxin toxicity can lead to changes in heart rate and blood pressure. In this case, the pulse rate of 100/min and blood pressure of 140/90 mm Hg are potential indications of digoxin toxicity.