Methods and apparatus for stroke patient treatment
First Claim
1. A method for evaluating the condition of a patient after stroke comprising the steps of:
- delivering breathable gas at a pressure above atmospheric to a patient after stroke;
measuring the airflow of said patient; and
determining a stroke indicator from said airflow, said stroke indicator representing information about the patient'"'"'s condition.
3 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus for assessing the condition of and treating patients for stroke during the delivery of continuous positive airway pressure (CPAP) are disclosed. By determining central and obstructive apnea occurrences or the percentile of pressure delivered to the patient from patient airflow, stroke indicators may be calculated and analyzed to provide information on the type of stroke a patient has suffered and the degree of a patient'"'"'s neuro-recovery. The apparatus may be programmed with a particular protocol intended to identify between alternative forms of CPAP treatment appropriate for the patient based upon an assessment of the patient'"'"'s condition. The device can select and recommend between the various treatment forms, identify billing reimbursement codes and generate data to track patient response to stroke treatments.
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Citations
103 Claims
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1. A method for evaluating the condition of a patient after stroke comprising the steps of:
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delivering breathable gas at a pressure above atmospheric to a patient after stroke;
measuring the airflow of said patient; and
determining a stroke indicator from said airflow, said stroke indicator representing information about the patient'"'"'s condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus for evaluating the condition of a patient after stroke comprising:
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a mask;
a blower to supply breathable gas at a pressure above atmospheric to said mask;
a flow sensor to generate a flow signal indicative of the patient'"'"'s airflow; and
a computer to process said flow signal and control said blower wherein said computer is programmed with instructions for;
controlling said blower to deliver breathable gas at a pressure above atmospheric to a patient; and
calculating a stroke indicator from said flow signal, said stroke indicator representing information about the patient'"'"'s condition. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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37. An apparatus for evaluating the condition of a patient after stroke comprising:
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a means for supplying breathable gas at a pressure above atmospheric to a patient;
a flow sensor means to generate a flow signal indicative of the patient'"'"'s airflow; and
a computer means to process said flow signal and control said blower wherein said computer is programmed with instructions for;
controlling said blower to deliver breathable gas at a pressure above atmospheric to a patient; and
calculating a stroke indicator from said flow signal, said stroke indicator representing information about the patient'"'"'s condition.
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54. A medium for storing instructions for use by an electronic processor to control the evaluation of the condition of a patient after stroke, said instructions for controlling the execution of the step of:
calculating a stroke indicator from a measure of airflow of a patient, said airflow measured during the delivery of a pressure of breathable gas above atmospheric, said stroke indicator representing information about the patient'"'"'s condition. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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73. A method for evaluating the condition of a patient after stroke comprising the steps of:
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during a first period delivering breathable gas at a pressure above atmospheric to the patient;
determining a first index as a function of the total number of hypopneas and apneas experienced by the patient during said first period;
comparing said first index to a threshold value and if said first index exceeds said threshold value then selecting between forms of CPAP treatment. - View Dependent Claims (74, 75, 76, 77, 78, 79)
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80. An apparatus for evaluating the condition of a patient after stroke comprising:
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a mask;
a blower to supply breathable gas at a pressure above atmospheric to said mask;
a flow sensor to generate a flow signal indicative of the patient'"'"'s airflow; and
a computer to process said flow signal and control said blower wherein said computer is programmed with instructions for;
during a first period delivering breathable gas at a pressure above atmospheric to the patient;
determining a first index as a function of the total number of hypopneas and apneas experienced by the patient during said first period;
comparing said first index to a threshold value and if said first index exceeds said threshold value then selecting between forms of CPAP treatment. - View Dependent Claims (81, 82, 83, 84, 85, 86)
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87. An apparatus for evaluating the condition of a patient after stroke comprising:
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a means for supplying breathable gas at a pressure above atmospheric to a patient;
a flow sensor means to generate a flow signal indicative of the patient'"'"'s airflow; and
a computer means to process said flow signal and control said blower wherein said computer is programmed with instructions for;
during a first period delivering breathable gas at a pressure above atmospheric to the patient;
determining a first index as a function of the total number of hypopneas and apneas experienced by the patient during said first period;
comparing said first index to a threshold value and if said first index exceeds said threshold value then selecting between forms of CPAP treatment. - View Dependent Claims (88, 89, 90, 91, 92, 93)
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94. A medium for storing instructions for use by an electronic processor for controlling the evaluation of the condition of a patient after stroke, said instructions for controlling the execution of the steps of:
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determining a first index as a function of the total number of hypopneas and apneas experienced by a patient from a first period of delivered breathable gas at a pressure above atmospheric;
comparing said first index to a threshold value and if said first index exceeds said threshold value then selecting between forms of CPAP treatment. - View Dependent Claims (95, 96, 97, 98, 99, 100)
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101. A method of deriving a stroke indicator of a patient after stroke comprising the steps of:
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determining the number of central and obstructive apneas which the patient has during a first time period;
calculating a stroke indicator index from a comparison of the number of central and obstructive apneas which the patient has during the first time period, said stroke indicator representing information about the patient'"'"'s rehabilitation from stroke.
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102. Apparatus for deriving a stroke indicator of a patient after stroke comprising:
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an airflow sensor means for measuring respiratory airflow of a patient;
an effort sensor means for measuring the respiratory effort of the patient;
a computer means programmed (a) to monitor the airflow and effort sensor means, (b) to determine a number of central and obstructive apneas which the patient has during a first time period, and (c) to calculate a stroke indicator index from a comparison of the number of central and obstructive apneas which the patient has during the first time period, said stroke indicator index representing information about the patient'"'"'s recovery from stroke.
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103. Apparatus for deriving a stroke indicator of a patient after stroke comprising:
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a flow sensor to generate a respiratory signal of a patient;
a respiratory band to generate an effort signal of the patient;
a computer programmed to determine a number of central and obstructive apneas which the patient has during a first time period from data from said respiratory signal and said effort signal and to calculate a stroke indicator index from a comparison of the number of central and obstructive apneas which the patient has during the first time period, said stroke indicator index representing information about the patient'"'"'s recovery from stroke.
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103-1. A medium for storing instructions for use by an electronic processor for controlling the derivation of a stroke indicator, said instructions for controlling the execution of the steps of:
calculating a stroke indicator index from a comparison of a number of central and obstructive apneas determined from data representing respiratory airflow and patient effort from a first time period, said stroke indicator index representing information about the patient'"'"'s recovery from stroke.
Specification