Answer:
the answer is 2 minutes
High-quality cardiopulmonary resuscitation (CPR) is a fundamental parameter during cardiac arrest. A provider must be able to deliver high-quality CPR to save lives.
High-quality CPR involves the following parameters:
1-Chest compression fraction (CCF). The CCF is defined as the proportion of resuscitation time without circulation during which compressions are administered (CCF value must be >80%)
2-Chest compression rate of 100-120/min. The chest compression rate can be defined as the expected frequency of chest compressions delivered per minute.
3-Chest compression depth (recommended at least 50 mm in adults). Chest compression depth indicates the displacement of the patient's sternum from the resting position
4-Chest recoil (residual leaning): Chest recoil refers to the re-expansion of the chest to enable blood flow to the heart during high-quality CPR.
5-Ventilation (no excessive).
These parameters must be rigorously controlled to protect patients from cardiac arrest, and therefore a provider cannot be fatigued when making CPR.
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