PATHOPHYSIOLOGY of ATRIAL FLUTTER
"Atrial Flutter is an atrial tachydysrhythmia identified by recurring, regular, sawtooth-shaped flutter waves that originate from a single ectopic focus in the right atrium, or less often the left atrium."
Causes of Atrial Flutter:
"Associated with CAD, hypertension, mitral valve disorders pulmonary embolus, chronic lung disease, cor pulmonale, cardiomyopathy, hyperthyroidism, and the use of drugs such as digoxin, quinidine, and epinephrine."
ECG Characteristics:
"Atrial rate of 200-350 beats/minute.
Atrial and ventricular rhythms are usually regular.
The atrial flutter waves represent atrial depolarization followed by re-polarization.
The PR interval is variable and not measurable.
The QRS complex is usually standard."
Complications
If untreated can lead to heart failure due to decreased cardiac output, along with an "increased risk for stroke because thrombi (clots) can form in the atria from the stasis of blood).
Treatment
"The primary goal in treatment is to slow the ventricular response by increasing AV block. Drugs used to control ventricular rate include calcium channel blockers, Beta-blockers. Antidysrhythmic drugs to convert atrial flutter to sinus rhythm." Procedure: Cardiac ablation.
Harding, M., Kwong, J., Roberts, D., Hagler, D., & Reinisch, C. (2020). Chapter 35 Dysrhythmias. In Lewis's medical-surgical nursing: Assessment and management of clinical problems (Eleventh, pp. 763–763). essay, Elsevier, Inc.