Multi-channel cardiac measurements
First Claim
1. An automatic method of determining local activation time (LAT) in multi-channel cardiac electrogram signals including a plurality of cardiac channels, the method comprising:
- storing the cardiac channel signals;
selecting a mapping channel, a ventricular channel, and a reference channel from among the plurality of cardiac channels;
using the selected channels to compute first LAT values at a plurality of mapping-channel locations;
monitoring the quality of at least one selected channel;
if the quality of a monitored cardiac channel falls below a standard, replacing the sub-standard channel with another channel of the plurality of channels having an above-standard quality; and
computing second LAT values based on the replacement cardiac channel.
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Abstract
An automatic method of determining local activation time (LAT) in multi-channel cardiac electrogram signals including a plurality of cardiac channels, the method comprising: (a) storing the cardiac channel signals; (b) selecting a mapping channel, a ventricular channel, and a reference channel from among the plurality of cardiac channels; (c) using the selected channels to compute first LAT values at a plurality of mapping-channel locations; (d) monitoring the quality of at least one selected channel; (e) if the quality of a monitored cardiac channel falls below a standard, replacing the sub-standard channel with another channel of the plurality of channels having an above-standard quality; and (f) computing second LAT values based on the replacement cardiac channel.
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Citations
50 Claims
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1. An automatic method of determining local activation time (LAT) in multi-channel cardiac electrogram signals including a plurality of cardiac channels, the method comprising:
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storing the cardiac channel signals; selecting a mapping channel, a ventricular channel, and a reference channel from among the plurality of cardiac channels; using the selected channels to compute first LAT values at a plurality of mapping-channel locations; monitoring the quality of at least one selected channel; if the quality of a monitored cardiac channel falls below a standard, replacing the sub-standard channel with another channel of the plurality of channels having an above-standard quality; and computing second LAT values based on the replacement cardiac channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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Specification