Final answer:
Regular narrow complex tachycardia is primarily treated with beta blockers and antiarrhythmic agents like procainamide, with pacemakers, surgery, and urgent electric shock treatment such as cardioversion or defibrillation reserved for severe cases.
Step-by-step explanation:
The medicinal treatment for regular narrow complex tachycardia typically includes beta blockers and antiarrhythmic agents. Beta blockers work by blocking the beta-1 receptors, which slows the heart rate (HR) and is useful in treating hypertension. Overprescription of beta blockers, however, can cause bradycardia or even heart stoppage. Antiarrhythmic agents like procainamide are used to restore normal heart rhythm but may have significant side effects if used long-term.
In more severe cases, medical procedures such as the insertion of a pacemaker or surgery may be necessary. Patients with severe symptoms may require urgent treatment with controlled electric shock, through processes like cardioversion or defibrillation. Other supportive treatments might include blood thinners, particularly for patients with irregular heartbeats at risk of complications.