Monitoring P-waves to detect degradation of atrial myocardium

Details Monitoring P-waves to detect degradation of atrial myocardium Monitoring P-waves to detect degradation of atrial myocardium

2003-07-31

2009-11-17

Manuel, George (Department: 3762)

Surgery

Diagnostic testing

Cardiovascular

Reexamination Certificate

active

07620446

ABSTRACT:
An implantable medical device (IMD) monitors at least one characteristic of P-waves within an electrogram signal. By monitoring changes in the characteristic over time, the IMD detects degradation of the atrial myocardium. In some embodiments, the IMD detects ischemia, an increased probability of the occurrence of angina, or a risk of future atrial fibrillation based on changes in the characteristic over time. The IMD can include a memory to store information relating to the detection and other diagnostic information for retrieval and evaluation by a clinician, and/or an alarm to alert the patient of the detection. In some embodiments, the IMD switches out of an atrial-tracking ventricular pacing mode, decreases the maximum tracking rate for an atrial-tracking ventricular pacing mode, increases the aggressiveness of rate-responsive atrial pacing, and/or initiates or modifies delivery of a therapy, such as a drug or neurostimulation, in response to the identification.

REFERENCES:
patent: 5374282 (1994-12-01), Nichols et al.
patent: 5458621 (1995-10-01), White et al.
patent: 5792192 (1998-08-01), Lu
patent: 5800466 (1998-09-01), Routh et al.
patent: 5817133 (1998-10-01), Houben
patent: 5824021 (1998-10-01), Rise
patent: 6029087 (2000-02-01), Wohlgemuth
patent: 6047806 (2000-04-01), Sasse
patent: 6058328 (2000-05-01), Levine et al.
patent: 6122553 (2000-09-01), Ideker et al.
patent: 6205357 (2001-03-01), Ideker et al.
patent: 6234603 (2001-05-01), Altfather et al.
patent: 6514195 (2003-02-01), Ferek-Petric
patent: 6604000 (2003-08-01), Lu
patent: 6738655 (2004-05-01), Sen et al.
patent: 6741890 (2004-05-01), Seim et al.
patent: 7027861 (2006-04-01), Thompson
patent: 7107093 (2006-09-01), Burnes
patent: 7123954 (2006-10-01), Narayan et al.
patent: 7142907 (2006-11-01), Xue et al.
patent: 2003/0036773 (2003-02-01), Whitehurst et al.
patent: 2003/0083587 (2003-05-01), Ferek-Petric
patent: 2004/0162590 (2004-08-01), Whitehurst et al.
patent: 2004/0215238 (2004-10-01), van Dam et al.
patent: 2007/0021679 (2007-01-01), Narayan et al.
patent: 1 062 987 (2000-12-01), None
P. E. Dilaveris, G. K. Andrikopoulos, G. Metaxas, D. J. Richter, C. K. Avgeropoulou, A. M. Androulakis, E. J. Gialafos, A. P. Michaelides, P. K. Toutouzas, J. E. Gialafos (1999) Effects of Ischemia on P Wave Dispersion and Maximum P Wave Duration During Spontaneous Anginal Episodes; Pacing and Clinical Electrophysiology 22 (11) , 1640-1647.
Palma, Eugen C., et al., “Effect of Varying Atrial Sensitivity, AV Interval, and Detection Algorithm on Automatic Mode Switching”,Pace, vol. 19, Nov. 1996, Part II, pp. 1734-1739.
Bonnet, et al., “Mode Switch Despite Undersensing of Atrial Fibrillation in DDD Pacing”,Pace, vol. 19, Nov. 1996, Part II, pp. 1724-1728.
Ricci, et al., “Reliability of a New Algorithm for Automatic Mode Switching from DDDR to DDIR Pacing Mode in Sinus Node Disease Patients with Chronotropic Incompetence and Recurrent Paroxysmal Atrial Fibrillation”,Pace, vol. 19, Nov. 1996, Part II, pp. 1719-1723.
Lam, et al., “Improved Efficacy of Mode Switching During Atrial Fibrillation Using Automatic Atrial Sensitivity Adjustment”,Pace, vol. 22, Jan. 1999, Part I, pp. 17-25.
De Sisti, A. et al., “P Wave Duration and Morphology Predict Atrial Fibrillation Recurrence in Patients with Sinus Node Dysfunction and Atrial-Based Pacemaker,”Pace, vol. 25, No. 11, p. 1546-1554 (Nov. 2002).
Dilaveris, P.E. et al., “Future Concepts in P Wave Morphological Analyses,”CEPR, vol. 6, No. 3, p. 221-224 (2002).
Guo, X.H. et al., “Prognostic Significance of Serial P Wave Signal-Averaged Electrocardiograms Following External Electrical Cardioversion for Persistent Atrial Fibrillation,”Pace, vol. 25, Part II, p. 299-304 (Jan. 2003).

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