Patients who develop myocardial ischemia after pregnancy may gradually develop chest tightness, chest pain, palpitations and, in severe cases, arrhythmias in pregnant women if they do not receive timely and effective improvement. Milder arrhythmias do not affect pregnant women much, such as occasional atrial premature beats and ventricular premature beats. However, if supraventricular tachycardia or atrial fibrillation occurs due to myocardial ischemia, this is a relatively dangerous condition. In particular, if atrial fibrillation occurs, there is a risk of embolus dislodgement. If the embolus dislodges and causes pulmonary embolism, the patient may suffer cardiac arrest and sudden death. Prolonged myocardial ischemia may also induce patients to develop heart failure. Therefore, when a pregnant woman develops myocardial ischemia, it is important to pay high attention and treat it actively.