Which medication is contraindicated for a patient with asthma who is experiencing brisk bleeding and a boggy uterus after delivery?

The correct choice is Carboprost, which is contraindicated for a patient with asthma. Carboprost is a synthetic form of prostaglandin F2α, and its use can induce bronchospasm, making it unsafe for individuals with asthma, especially those experiencing an acute episode. In the context of postpartum hemorrhage, it is crucial to manage the bleeding effectively while also considering the patient's underlying health conditions, such as asthma, to avoid exacerbating their respiratory issues.

Other medications such as Methylergometrine, Oxytocin, and Misoprostol are generally considered safer alternatives for managing uterine atony and postpartum hemorrhage in patients with asthma. These agents can help contract the uterus and facilitate its return to a more normal state without the additional risk of precipitating severe asthma attacks. Therefore, Carboprost's potential to inhibit bronchial smooth muscle relaxation makes it inappropriate for use in this patient scenario.