Traditional cardiopulmonary resuscitation (STD-CPR) is restricted by the contraindication of chest compressions, which narrows its clinical application.

The content you mentioned comes from "Understanding of Abdominal Pressure Boosting Cardiopulmonary Resuscitation Experts" published by Wang Lixiang.

The traditional cardiopulmonary resuscitation (STD-CPR) is restricted by the contraindications of chest compressions, which narrows the scope of its clinical application. Sufficient strength (45-55 kg) and amplitude (> ＞5 cm) are needed when pressing, and about one third of the rescued people have rib fractures. For CA patients with rib fractures complicated with chest trauma, chest compressions are taboo because they may aggravate the fractures, lead to broken ends and injury to the lungs and pleura. At this time, the thoracic expansion is limited, so it is difficult to ensure the traditional compression degree and amplitude, which affects the ideal play of the role of "heart pump" and "chest pump" and then reduces the CPR effect. Therefore, for some CA patients who have contraindications to chest compressions, a single chest compressions method cannot meet the clinical needs.

in addition, STD-CPR has the defect that it can only establish circulation singly, but can't take care of breathing. When CPR is carried out according to the ratio of chest compressions to ventilation in the international guidelines for cardiopulmonary resuscitation, artificial ventilation is given after the artificial circulation of chest compressions is terminated. This way of ventilation during the interruption of compression artificially separates artificial ventilation from chest compressions, which leads to the disconnection between ventilation and blood flow, abnormal ventilation/blood flow ratio (V/Q), which affects the gas exchange in the lungs, fails to ensure oxygenation during CPR, and leads to a decrease in the success rate of resuscitation.

Moreover, in the actual clinical cardiopulmonary resuscitation, CA can be roughly divided into primary CA and secondary CA, among which secondary CA is mostly caused by asphyxia and hypoxia (such as drowning, asphyxia, respiratory failure, etc.), and the oxygen reserve may have been exhausted during cardiac arrest, so the importance of respiratory support is emphasized. At this time, an ideal artificial ventilation mode in line with physiological mechanism is provided, that is, synchronous ventilation is given under artificial circulation, so as to ensure the effective alveolar ventilation and the oxygen during CPR. It is very important to maintain effective lung ventilation as soon as possible when establishing artificial airway unconditionally, especially before connecting respirator ventilation through tracheal intubation.

Because of the limitations, defects and one-sided influence of traditional cardiopulmonary resuscitation, it is meaningful to study abdominal lifting cardiopulmonary resuscitation.