Synchronizing chest compression and ventilation in cardiac resuscitation

摘要

Apparatus for automatic delivery of chest compressions and ventilation to a patient, the apparatus including: a chest compressing device configured to deliver compression phases during which pressure is applied to compress the chest and decompression phases during which approximately zero pressure is applied to the chest a ventilator configured to deliver positive, negative, or approximately zero pressure to the airway; control circuitry and processor, wherein the circuitry and processor are configured to cause the chest compressing device to repeatedly deliver a set containing a plurality of systolic flow cycles, each systolic flow cycle comprising a systolic decompression phase and a systolic compression phase, and at least one diastolic flow cycle interspersed between sets of systolic flow cycles, each diastolic flow cycle comprising a diastolic decompression phase and a diastolic compression phase, wherein the diastolic decompression phase is substantially longer than the systolic decompression phase.

主权项

1. Apparatus for automatic delivery of chest compressions and ventilation to a patient, the apparatus comprising:
a chest compressing device configured to deliver compression phases during which pressure is applied to compress the chest and decompression phases during which approximately zero pressure is applied to the chest; a ventilator configured to deliver positive, negative, or approximately zero pressure to the airway; control circuitry and processor, wherein the circuitry and processor are configured to cause the chest compressing device to repeatedly deliver systolic flow cycles, each systolic flow cycle comprising a systolic decompression phase and a systolic compression phase and being configured to improve systolic circulatory flow, and wherein the control circuitry and processor are configured to cause the ventilator to deliver a ventilation pressure during the systolic compression phase that increases in the shape of a ramp over the duration of the systolic compression phase from approximately zero pressure at the onset of the systolic compression phase to approximately a maximum pressure at or near the end of the compression phase, and transitions to a negative minimum pressure at or near the start of the decompression phase, and then increases in the shape of a ramp over the duration of the systolic decompression phase to approximately zero pressure at the end of the decompression phase.