Implantable cardiac stimulation device which recommends ablation therapy and method

An implantable cardiac device comprising:

• sensing means for sensing electrical activity of a heart and generating electrical signals representing the electrical activity of the heart;
• arrhythmia detecting means for detecting atrial flutter of the heart;
• data processing means for providing cardiac data responsive to the electrical signals and for measuring an interatrial conduction delay for the cardiac data;
• and
• analyzing means for analyzing the the interatrial conduction delays responsive to detection of atrial flutter to determine if the interatrial conduction delays are stable and indicating atrial ablation when the interatrial conduction delays are stable.

A method of treating atrial flutter of a heart for use in an implantable cardiac device, the method comprising:

• sensing electrical activity of a heart to provide electrical signals representing the electrical activity of the heart;
• monitoring for atrial flutter of the heart;
• measuring cardiac data responsive to the electrical signals;
• analyzing the cardiac data to determine interatrial conduction delays and cardiac intervals corresponding to the interatrial conduction delays;
• and
• providing an indication for atrial ablation in response to detection of atrial flutter if the interatrial conduction delays are within specified ranges in relation to the corresponding cardiac intervals.