Final answer:
Phenytoin can enhance the effects of nondepolarizing neuromuscular blocking drugs (NMBDs), leading to increased muscle relaxation and paralysis. Careful monitoring is necessary to prevent excessive muscle relaxation and potential respiratory complications.
Step-by-step explanation:
Phenytoin is an anti-seizure medication that affects the nervous system. It has acute and chronic effects on nondepolarizing neuromuscular blocking drugs (NMBDs). When phenytoin is given with nondepolarizing NMBDs, it can enhance their effects, leading to increased muscle relaxation and paralysis.
For example, if a patient is given phenytoin and a nondepolarizing NMBD before surgery, it can help relax the muscles and prevent unwanted muscle contractions during the procedure.
However, it's important to note that the use of phenytoin with NMBDs should be carefully monitored by healthcare professionals to prevent excessive muscle relaxation and potential respiratory complications.