Patient monitor for determining a probability that a patient has acute cardiac ischemia
First Claim
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1. A patient monitor comprising:
- a first input device connectable to a patient to acquire electrocardiogram (ECG) signals from the patient;
an instrumentation amplifier connected to the input device to combine the signals and to generate at least one ECG lead based on the signals;
a second input device connectable to the patient to acquire a non-ECG physiological signal; and
an analysis module operable to continuously read the ECG lead, to analyze a portion of the ECG lead for a period of time, and to calculate a probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead.
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Abstract
A patient monitor for determining a probability that a patient has acute cardiac ischemia including an input device connectable to a patient to acquire electrocardiogram (ECG) signals from the patient, an instrumentation amplifier connected to the input terminal to combine the signals and to generate at least one ECG lead, and an analysis module. The analysis module is operable to continuously read the ECG lead, to analyze a portion of the ECG lead for a period of time, and to calculate a probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead.
81 Citations
55 Claims
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1. A patient monitor comprising:
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a first input device connectable to a patient to acquire electrocardiogram (ECG) signals from the patient;
an instrumentation amplifier connected to the input device to combine the signals and to generate at least one ECG lead based on the signals;
a second input device connectable to the patient to acquire a non-ECG physiological signal; and
an analysis module operable to continuously read the ECG lead, to analyze a portion of the ECG lead for a period of time, and to calculate a probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
a data entry device operable to receive patient biographical data; and
wherein the analysis module calculates the probability that the patient has acute cardiac ischemia based at least in part on the patient biographical data.
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3. A patient monitor as set forth in claim 2 wherein the patient biographical data is the sex of the patient.
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4. A patient monitor as set forth in claim 2 wherein the patient biographical data is the age of the patient.
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5. A patient monitor as set forth in claim 1 and further comprising a data entry device operable to receive information relating to a patient condition, and wherein the analysis module calculates a probability that the patient has acute cardiac ischemia based at least in part on the information relating to the patient condition.
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6. A patient monitor as set forth in claim 5 wherein the patient condition is a reported pain located in the chest or left arm of the patient.
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7. A patient monitor as set forth in claim 1 wherein the first input device is a plurality of electrodes.
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8. A patient monitor as set forth in claim 1 and further comprising an output device that informs an operator of the probability that the patient has acute cardiac ischemia.
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9. A patient monitor as set forth in claim 8 wherein the output device is a display.
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10. A patient monitor as set forth in claim 8 wherein the output device is a printer.
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11. A patient monitor as set forth in claim 1 wherein the analysis module includes a memory unit, a processor, and software stored in the memory unit that operates the processor.
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12. A patient monitor as set forth in claim 11 wherein the software operates the processor to analyze a portion of the ECG lead for a period of time resulting in at least one ECG analysis coefficient, and to calculate a probability that the patient has acute cardiac ischemia based at least in part on the ECG analysis coefficient.
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13. A patient monitor as set forth in claim 12 wherein the ECG analysis coefficient signifies whether an ECG Q-wave is present.
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14. A patient monitor as set forth in claim 12 wherein the ECG analysis coefficient signifies whether an ECG ST segment is depressed or elevated.
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15. A patient monitor as set forth in claim 12 wherein the ECG analysis coefficient signifies whether an ECG T-wave is inverted.
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16. A patient monitor comprising:
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an input device connectable to a patient to acquire electrocardiogram (ECG) signals from the patient;
an instrumentation amplifier connected to the input device to combine the signals and to generate at least one ECG lead based on the signals;
an analysis module operable to continuously read the ECG lead, to analyze a portion of the ECG lead for a period of time, and to calculate a probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead;
an output device that informs an operator of the probability that the patient has acute cardiac ischemia;
an output terminal connectable to a second processor via a network; and
wherein the output device is the second processor.
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17. A patient monitor comprising:
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an input device connectable to a patient to acquire electrocardiogram (ECG) signals from the patient;
an instrumentation amplifier connected to the input device to combine the signals and to generate at least one ECG lead based on the signals;
an analysis module operable to continuously read the ECG lead, to analyze a portion of the ECG lead for a period of time, and to calculate a probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead; and
wherein the patient monitor is powered by a direct current power source.
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18. A patient monitor comprising:
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an input device connectable to a patient to acquire electrocardiogram (ECG) signals from the patient;
an instrumentation amplifier connected to the input device to combine the signals and to generate at least one ECG lead based on the signals;
an analysis module operable to continuously read the ECG lead, to analyze a portion of the ECG lead for a period of time, and to calculate a probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead; and
wherein the patient monitor is powered by an alternating current power source.
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19. A patient monitor comprising:
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an input device connectable to a patient to acquire electrocardiogram (ECG) signals from the patient;
an instrumentation amplifier connected to the input device to combine the signals and to generate at least one ECG lead;
a second input device connectable to the patient to acquire a non-ECG physiological signal;
a data entry device operable to receive patient biographical data and information relating to a patient condition; and
an analysis module including a memory unit, a processor, and software that operates the processor to continuously read the ECG lead, to continuously read the non-ECG physiological signal, to analyze a portion of the ECG for a period of time, and to calculate a probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead, the patient biographical data and the information relating to the patient condition. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of determining a probability that a patient has acute cardiac ischemia, the method comprising the acts of:
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providing a patient monitor having an input device connectable to a patient;
acquiring electrocardiogram (ECG) signals from the patient;
generating at least one ECG lead in response to acquiring the ECG signals;
continuously monitoring the ECG lead;
analyzing a portion of the ECG lead for a period of time;
calculating the probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead; and
wherein the act of continuously monitoring the ECG lead includes continuously displaying the ECG lead.
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31. A method of determining a probability that a patient has acute cardiac ischemia, the method comprising the acts of:
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providing a patient monitor having an input device connectable to a patient;
acquiring electrocardiogram (ECG) signals from the patient;
generating at least one ECG lead in response to acquiring the ECG signals;
continuously monitoring the ECG lead;
analyzing a portion of the ECG lead for a period of time;
calculating the probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead; and
wherein the act of continuously monitoring the ECG lead includes continuously recording the ECG lead.
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32. A method of determining a probability that a patient has acute cardiac ischemia, the method comprising the acts of:
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providing a patient monitor having a first input device connectable to a patient;
acquiring electrocardiogram (ECG) signals from the patient;
generating at least one ECG lead in response to acquiring the ECG signals;
continuously monitoring the ECG lead;
analyzing a portion of the ECG lead for a period of time;
calculating the probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead;
wherein the patient monitor includes a second input device that connects to the patient and acquires a non-ECG physiological signal; and
wherein the method further comprises continuously monitoring the non-ECG physiological signal from the patient. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A software program stored in a computer readable medium for operation in a patient monitor to determine a probability that a patient has acute cardiac ischemia, the software program comprising program code for:
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reading at least one electrocardiogram (ECG) lead acquired from the patient;
continuously monitoring the ECG lead;
analyzing a portion of the ECG lead for a period of time;
calculating the probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead; and
wherein the continuously monitoring act includes continuously display the ECG lead.
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45. A software program stored in a computer readable medium for operation in a patient monitor to determine a probability that a patient has acute cardiac ischemia, the software program comprising program code for:
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reading at least one electrocardiogram (ECG) lead acquired from the patient;
continuously monitoring the ECG lead;
analyzing a portion of the ECG lead for a period of time;
calculating the probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead; and
wherein the continuously monitoring act includes continuously recording the ECG lead.
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46. A software program stored in a computer readable medium for operation in a patient monitor to determine a probability that a patient has acute cardiac ischemia, the software program comprising program code for:
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reading at least one electrocardiogram (ECG) lead acquired from the patient;
continuously monitoring the ECG lead;
analyzing a portion of the ECG lead for a period of time;
calculating the probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead;
receiving patient biographical data; and
wherein the act of calculating includes calculating the probability of acute cardiac ischemia based at least in part on the patient biographical data. - View Dependent Claims (47, 48)
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49. A software program stored in a computer readable medium for operation in a patient monitor to determine a probability that a patient has acute cardiac ischemia, the software program comprising program code for:
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reading at least one electrocardiogram (ECG) lead acquired from the patient;
continuously monitoring the ECG lead;
analyzing a portion of the ECG lead for a period of time;
calculating the probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead;
receiving a patient condition; and
wherein the act of calculating includes calculating the probability of acute cardiac ischemia based at least in part on the patient condition. - View Dependent Claims (50)
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51. A software program stored in a computer readable medium for operation in a patient monitor to determine a probability that a patient has acute cardiac ischemia, the software program comprising program code for:
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reading at least one electrocardiogram (ECG) lead acquired from the patient;
continuously monitoring the ECG lead;
analyzing a portion of the ECG lead for a period of time;
calculating the probability that the patient has acute cardiac ischemia based at least in part on the analyzed portion of the ECG lead;
reading at least one non-ECG physiological signal; and
continuously monitoring the non-ECG physiological signal. - View Dependent Claims (52, 53, 54, 55)
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Specification