The laboratory test to screen for gestational diabetes is:

A. The woman should never be left alone with her infant: Postpartum psychosis involves severe mood changes, delusions, and impaired reality testing that can place both the mother and infant at risk. Close supervision is required due to the potential for harm related to hallucinations or disorganized thinking. Continuous monitoring helps ensure infant safety during the acute phase of illness.

B. Symptoms rarely last more than one week: Postpartum psychosis is a psychiatric emergency that often persists for weeks to months without appropriate treatment. Symptom duration varies depending on severity and response to therapy. Minimizing the expected course may delay recognition of ongoing risk.

C. Clinical response to medications is usually poor: Postpartum psychosis generally responds well to antipsychotics, mood stabilizers, and sometimes electroconvulsive therapy. Early treatment significantly improves outcomes and reduces relapse risk.

D. The woman must have her vitals assessed every two days: While physical monitoring may be part of care, vital sign assessment alone does not address the psychiatric and safety concerns of postpartum psychosis. Ongoing mental status evaluation and supervision are far more critical. Vital sign frequency is not a primary teaching point for families.

A. It is a type IV hypersensitivity reaction: Urticaria is typically a type I hypersensitivity reaction mediated by IgE, not a delayed type IV reaction. Type IV reactions involve T-cell–mediated responses, such as contact dermatitis, rather than immediate histamine-mediated reactions.

B. Histamine release leads to vasodilation: Urticaria results from mast cell degranulation and histamine release, which increase vascular permeability and cause local vasodilation. This leads to the characteristic erythema, swelling, and itching associated with hives.

C. Wheals appear first followed by erythema: In urticaria, erythema and wheals usually appear simultaneously as a result of histamine-induced vasodilation and plasma leakage into the dermis. There is no distinct sequence of wheals followed by erythema.

D. The nonpruritic rash blanches with pressure: Urticarial lesions are typically pruritic (itchy), not nonpruritic, and may blanch under pressure due to transient vasodilation. Pruritus is a hallmark symptom distinguishing urticaria from other rashes.