Blood pressure should be strictly controlled in patients with myocardial infarction, as both poorly controlled blood pressure and fluctuating blood pressure can increase the risk of cardiovascular blockage.
Therefore, patients with current blood pressure >140/90 mmHg should be given antihypertensive therapy and should have their blood pressure controlled to <140/90 mmHg, and those with combined diabetes or chronic kidney disease should have their blood pressure controlled to <130/80 mmHg.