R-301 stretcher cardiopulmonary resuscitation device small size, light weight, easy to carry, with 100% oxygen as the driving force, suitable for the first hospital in the hospital scene, transit, and easy to learn to master. In this group of patients, no case because of mechanical failure led to the failure of recovery. R-301 cardiopulmonary resuscitation instrument with chest compression and synchronous positive pressure ventilation function to ensure effective ventilation. However, the 2010 edition of the Cardiopulmonary Resuscitation Guidelines suggests that minimizing disruption of the compression process is the key to increasing the success rate of rescue and emphasizing the need to avoid hyperventilation: the currently recommended single responder's compression: a ventilation ratio of 30 : 2, and R-301 resuscitator parameter settings (5: 1) there is a certain contradiction. In the use of recovery machine ventilation, the actual frequency is often less than 100 times / min. Therefore, pre-hospital 39 patients due to limited conditions, still use the recovery machine by 5: 1 ventilation. While 47 patients in the hospital using the resuscitation machine, the external ventilator to assist breathing, so that the recovery machine continued to press without ventilation delay press. But this will inevitably produce pressure and ventilation in conflict, at present, the two pressure ventilation system is still a lack of comparative conclusions.

R-301 resuscitator carrying oxygen bottle capacity is limited, when the chest pressure and oxygen at the same time, the instrument provides two oxygen cylinders can only maintain about 0.5h, can not meet the requirements of long-term cardiopulmonary resuscitation, and Replace the cylinder when the inevitable interrupt press. I will be connected pipe improvement, the instrument can be connected with the domestic standard oxygen cylinders, greatly extending the use of time. In addition, the author in the recovery machine stretcher to increase the hip and leg straps, reducing the shift caused by handling the press, improve the effectiveness of the press recovery.

Conventional hand-pressing is difficult to avoid uneven force, pressing depth and frequency is difficult to grasp, R 301 recovery machine to solve these problems well, so that the recovery process more consistent; so that external chest compression frequency, amplitude, location can be unified standardization . Literature shows: CPR in the chest compressive continuity is very important, even if the interruption of 10s, will also directly affect the hemodynamic changes, the prognosis is very unfavorable. It is reported that the use of mechanical compression device will delay the chest compression time, mainly because the device preparation, start, move more time-consuming. Therefore, should be based on clinical practice experience, will carry patients, start recovery machine program standardization, in order to shorten the delay and interrupt pressing time. Before our department from the admissions of pre-hospital patients to the recovery of the normal work of the average time-consuming about 2 min, press interrupt 10 s or so. The average duration of the procedure was 37 s and the interruption pressing time averaged 6 s after training in accordance with standard handling procedures. Only in 1, 2 step has obvious press interruption, the shortest interrupt time can be controlled in about 4 s, compared with the former greatly improved. Analysis of two reasons: First, because the two operations to three operations (instrument instructions for the two operations), especially in front of the hospital, our subjects will be included in the training of drivers, usually by the physician as "A", driving When the "B", nurses when the "C". Second, a clear division of their work, generally issued by the A or C, the rest of their duties, so busy and not chaos, greatly improving efficiency.

5 patients in this group is invalid, 3 cases of admissions from the onset of more than 15 min, 1 case of chest trauma, 1 case of severe pericardial effusion history. This 5 patients regardless of mechanical compression, or manual pressure are invalid. Estimated with the patient's own disease. This group of patients, although 29 cases of ROSC, accounting for 33.7% of the total, but the recovery was discharged in only 4 cases, less than 1%, which is similar to our pre-clinical results. Similar foreign studies have shown that, although the piston-type resuscitation machine can significantly improve hemodynamic and expiratory CO2 indicators, but compared with the manual pressure, the survival rate did not significantly improve. However, in practice, it significantly saves the medical staff time and physical, especially at night, physicians and nurses configuration is relatively small, the use of recovery machines to make more valuable use of human resources. In addition, in the current medical environment, in the face of family members "do not give up" requirements, it can greatly reduce medical disputes.