Final answer:
For stable tachycardia, beta blockers or antiarrhythmic agents are primary interventions, with cardioversion or defibrillation used in urgent cases. Pacemakers or ICDs may be implanted for chronic conditions, and underlying causes should also be addressed.
Step-by-step explanation:
The priority interventions for stable, wide, regular, monomorphic tachycardia typically include pharmacologic therapy and, in some cases, procedural intervention. Medications like beta blockers or antiarrhythmic agents such as procainamide are administered to restore a normal heart rhythm and control the heart rate. These drugs should be used with caution due to potential long-term side effects. For patients with symptomatic or unstable tachycardia, urgent treatment with a controlled electric shock through cardioversion or defibrillation might be necessary.
In certain chronic conditions, pacemakers or implantable cardioverter defibrillators (ICDs) can be used to ensure a proper heart rhythm. In addition to medical treatments, identifying and managing the underlying cause of the tachycardia is crucial. This may include addressing fever, anemia, hypoxia, hyperthyroidism, or electrolyte imbalances.