St. Jude Medical, Cardiology Division, Inc.

Dongfeng Han

Valtino X Afonso

Carlo Pappone

Dennis J Morgan

Chin-Ann Yang

A map of cardiac activation wavefronts can be created from a plurality of mesh nodes, each of which is assigned a conduction velocity vector. Directed edges are defined to interconnect the mesh nodes, and weights are assigned to the directed edges, thereby creating a weighted directed conduction velocity graph. A user can select one or more points within the weighted directed conduction velocity graph (which do not necessarily correspond to nodes), and one or more cardiac activation wavefronts passing through these points can be identified using the weighted directed conduction velocity graph. The cardiac activation wavefronts can then be displayed on a graphical representation of the cardiac geometry.

Methods and systems for identifying and mapping cardiac activation wavefronts

The present disclosure provides systems and methods for detecting cardiac activations of a patient. A system includes a data acquisition system (DAQ) communicatively coupled to an activation detection module. The DAQ detects an electrogram generated at an electrode disposed on or in the patient. The activation detection module is configured to receive the electrogram from the DAQ and compute an activation response. The activation detection module is further configured to determine a set of candidate detection time points (CDTPs) in the activation response. The activation detection module is configured to compute respective deflection characteristics for each CDTP. The activation detection module is configured to identify a group of final detection time points (FDTPs) among the set of CDTPs for a metric corresponding to the respective deflection characteristics. The group of FDTPs has similar deflection characteristics. The activation detection module is configured to compute metrics based on the group of FDTPs.

System and method for detecting consistent cardiac activity

The present disclosure provides systems and methods for detecting cardiac activation times of a patient. A system includes a data acquisition system and a processor communicatively coupled thereto. The data acquisition system is configured to detect a plurality of electrograms generated at a plurality of respective electrodes coupled to the patient. The processor is configured to receive the plurality of electrograms from the data acquisition system. The processor is further configured to compute respective energies of the plurality of electrograms. The processor is further configured to detect a cardiac activation time for a first electrogram among the plurality of electrograms based on the respective energy of the first electrogram and the respective energy of a second electrogram that neighbors the first electrogram.

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Saint Paul, MN, United States of America

Dongfeng Han