Systems and methods for improved post-resuscitation recovery
A method for performing cardiopulmonary resuscitation (CPR) includes elevating the head, heart and shoulders of an individual from a starting elevation angle to a final elevation angle greater than zero degrees relative to horizontal while performing CPR by repeatedly compressing the chest. The method includes elevating the brain within a time period selected to be slow enough to permit a sufficient amount of blood to flow to the brain throughout the elevation time period. The method also includes regulating the intrathoracic pressure of the individual while performing CPR. The performance of chest compressions is stopped and after stopping the performance of chest compressions, the head, heart, and shoulders are promptly from the final elevation angle within a timeframe selected to prevent significant drainage of blood from the brain until the head, heart and shoulders are lowered.
1. A method for performing cardiopulmonary resuscitation (CPR), comprising:
performing a type of CPR by repeatedly compressing the chest while gradually elevating the head, heart, and shoulders of an individual from a starting elevation angle to a final elevation angle greater than zero degrees relative to horizontal;
regulating the intrathoracic pressure of the individual by performing active compression decompression (ACD) CPR while the head, heart, and shoulders of the individual are at the final elevation angle; and
after spontaneous circulation is established, stopping the performance of chest compressions while maintaining the head, heart, and shoulders of the individual in an elevated position for a clinically-desirable timeframe, wherein the clinically-desirable timeframe is between about 1 and 60 minutes.
2. The method for performing cardiopulmonary resuscitation (CPR) of claim 1 , wherein:
the type of CPR comprises at least one type selected from the group consisting of: standard CPR, ACD CPR, load-distributing band CPR, and stutter CPR.
3. The method for performing cardiopulmonary resuscitation (CPR) of claim 1 , wherein:
in the elevated position the head, heart, and shoulders of the individual are positioned at the final elevation angle.
4. The method for performing cardiopulmonary resuscitation (CPR) of claim 1 , wherein:
in the elevated position the head, heart, and shoulders of the individual are positioned at an angle that is greater than or less than the final elevation angle.
5. The method for performing cardiopulmonary resuscitation (CPR) of claim 1 , further comprising:
temporarily stopping the performance of ACD CPR;
positioning the individual in a horizontal plane or orientation; and
assessing heart rhythm or another measured physiologic parameter of the individual to determine whether one or both of CPR and defibrillation are needed.
6. The method for performing cardiopulmonary resuscitation (CPR) of claim 1 , wherein:
the final elevation angle is between about fifteen degrees to about thirty degrees relative to horizontal.
7. The method for performing cardiopulmonary resuscitation (CPR) of claim 1 , further comprising:
during at least a portion of the gradually elevating the head, heart, and shoulders of an individual from the starting elevation angle to the final elevation angle, regulating the intrathoracic pressure of the individual by performing ACD CPR.
8. The method for performing cardiopulmonary resuscitation (CPR) of claim 1 , further comprising:
receiving at least one measurement from one or more physiological sensors; and
determining one or both of the final elevation angle and the elevated position based at least in part on the at least one measurement.
9. The method for performing cardiopulmonary resuscitation (CPR) of claim 8 , wherein:
the one or more physiological sensors comprise one or both of a regional cerebral oximetry sensor and an end tidal CO2 sensor.
10. A method for performing cardiopulmonary resuscitation (CPR), comprising:
performing a type of CPR by repeatedly compressing the chest while gradually elevating the head, heart, and shoulders of an individual from a starting elevation angle to a final elevation angle greater than zero degrees relative to horizontal;
regulating the intrathoracic pressure of the individual by performing active compression decompression (ACD) CPR while the head, heart, and shoulders of the individual are at the final elevation angle; and
detecting at least one outcome selected from the group consisting of: spontaneous circulation of the individual, a stable heart rate of the individual, and a measured physiological parameter of the individual; and
after detecting the at least one outcome, stopping the performance of chest compressions while maintaining the head, heart, and shoulders of the individual in an elevated position for a clinically-desirable timeframe, wherein the clinically-desirable timeframe is determined based on at least one physiological parameter.
11. The method for performing cardiopulmonary resuscitation (CPS) of claim 10 , wherein:
the at least one physiological parameter comprises a mean arterial pressure of the individual reaching at least 70 mmHg.
12. The method for performing cardiopulmonary resuscitation (CPS) of claim 10 , further comprising:
positioning a chest compression device relative to the individual's chest; and
activating the chest compression device to perform the ACD CPR by repeatedly compressing the individual's chest and by actively decompressing the individual's chest between successive compressions.
13. The method for performing cardiopulmonary resuscitation (CPS) of claim 10 , wherein:
the head, heart and shoulders are elevated from the starting elevation angle to the final elevation angle over a period of between about 5 and 60 seconds.
14. The method for performing cardiopulmonary resuscitation (CPS) of claim 10 , further comprising:
regulating the intrathoracic pressure of the individual using an impedance threshold device that is interfaced with an airway of the individual.
15. The method for performing cardiopulmonary resuscitation (CPS) of claim 14 , wherein:
the intrathoracic pressure of the individual is regulated using the impedance threshold device while the head, heart, and shoulders of the individual are at the final elevation angle.
16. A method for performing cardiopulmonary resuscitation (CPR), comprising:
performing a type of CPR by repeatedly compressing the chest while gradually elevating the head, heart, and shoulders of an individual from a starting elevation angle to a final elevation angle greater than zero degrees relative to horizontal;
regulating the intrathoracic pressure of the individual by performing active compression decompression (ACD) CPR while the head, heart, and shoulders of the individual are at the final elevation angle; and
after spontaneous circulation is established, stopping the performance of chest compressions while maintaining the head, heart, and shoulders of the individual in an elevated position for a clinically-desirable timeframe.
17. The method for performing cardiopulmonary resuscitation (CPS) of claim 16 , wherein:
at the final elevation angle the head of the individual is elevated to a height of between about 10 cm and 30 cm and the heart is elevated to a height of between about 3 cm and 8 cm.
18. The method for performing cardiopulmonary resuscitation (CPS) of claim 16 , wherein:
the ACD CPR is performed using an automated chest compression device.
19. The method for performing cardiopulmonary resuscitation (CPS) of claim 16 , further comprising:
receiving at least one measurement from one or more physiological sensors; and
determining one or both of the final elevation angle and the elevated position based at least in part on the at least one measurement.
20. The method for performing cardiopulmonary resuscitation (CPS) of claim 16 , wherein:
the head, heart and shoulders are elevated from the starting elevation angle to the final elevation angle over a period of between about 5 and 60 seconds.