A nurse is caring for a client who has severe manifestations of schizophrenia and is medicated as needed for agitation with haloperidol. The nurse should assess the client for which of the following adverse effects?

A. Haloperidol is not commonly associated with bleeding; this is more relevant to anticoagulants or antiplatelet therapy. B. Pancreatitis is more commonly associated with certain antipsychotics like clozapine or valproate, not haloperidol. C. Haloperidol, a typical antipsychotic, can prolong the QT interval and cause cardiac dysrhythmias, especially in higher doses or IV administration. Monitoring ECG and cardiac status is important. D. Cataract formation is a potential adverse effect of long-term use of atypical antipsychotics such as quetiapine or olanzapine, not haloperidol.