Pregnancy is a complex state in a woman's life. It is associated with anatomical and physiologic changes that greatly affect not only the mother but the living fetus inside her womb. This is a case of a 22-year-old woman at 36 5/7 weeks age of gestation presented with intractable tachycardia. The patient presented at the emergency room in cardiorespiratory distress in conjunction with preterm labor. The dilemma of the management would be thoroughly discussed in consideration of the present maternal cardiac condition and pregnancy.