Final answer:
The correct tocolytic medication for tachy-sensitive maternal cardiac disease and poorly controlled diabetes mellitus is Nifedipine, which belongs to the class of calcium channel blockers. It inhibits the calcium influx into smooth muscle cells, relaxing the uterine muscle and inhibiting contractions. Other tocolytic medications include Terbutaline and Indomethacin.
Step-by-step explanation:
In this question, the student is asking about tocolytic CIs (contraindications) for the treatment of tachy-sensitive maternal cardiac disease and poorly controlled diabetes mellitus. Tocolytic medications are used to inhibit labor contractions and prolong pregnancy. Among the options provided (Magnesium Sulfate, Terbutaline, Nifedipine, and Indomethacin), Nifedipine is the correct answer.
Nifedipine belongs to the class of calcium channel blockers, specifically dihydropyridines. It works by inhibiting the calcium influx into smooth muscle cells, which leads to relaxation of the uterine muscle and inhibition of contractions. This makes it an effective tocolytic agent for inhibiting premature labor.
Some other examples of tocolytic medications include Terbutaline (a beta-2 adrenergic agonist) and Indomethacin (a nonsteroidal anti-inflammatory drug).