Which adverse effect might occur due to Lidocaine administration?

Lidocaine is primarily used as a local anesthetic and antiarrhythmic agent, often administered to treat ventricular arrhythmias. One of the notable adverse effects associated with lidocaine administration is the occurrence of seizures. This can happen particularly in cases of overdose, where elevated plasma levels of lidocaine lead to neurological toxicity.

When lidocaine levels rise in the bloodstream, it can affect the central nervous system, resulting in symptoms such as dizziness, tinnitus, and, in more severe cases, seizures. This is attributed to lidocaine's mechanism of action, which involves sodium channel blockade; excessive blockade can lead to over-excitation of the CNS, culminating in seizures. The treatment of this adverse effect may require benzodiazepines or other anticonvulsants to manage seizure activity effectively.

The other options listed do not typically associate with the pharmacological effects of lidocaine. Elevated blood pressure might be caused by other drugs but is not a common side effect of lidocaine. Excessive sweating and hypoglycemia are similarly not linked to lidocaine administration. Thus, recognizing seizures as a potential adverse effect is crucial for safe patient management when using this medication.