Permanent pacemaker implantation with high pacing rate for treating refractory right heart failure: a case report

A previous study has shown that personalized acceleration of pacing rate in patients with heart failure with preserved ejection fraction can effectively improve quality of life. In addition, patients who undergo Fontan surgery can remain asymptomatic for decades, suggesting that left ventricular pump function may be sufficient to sustain both systemic and pulmonary circulation. Therefore, increasing HR can increase cardiac output, promote forward flow from the right atrium and vena cava into the pulmonary circulation, and reduce venous and right atrium pressures in patients with RHF and normal left-sided heart function.