Final answer:
Ana-Lisa should use a compression-to-ventilation ratio of 30:2 when performing multiple-provider CPR. This ratio aids in delivering high-quality CPR with minimal interruption in chest compressions. Proper training is crucial for effective and safe CPR administration.
Step-by-step explanation:
When Ana-Lisa takes over chest compressions and the team transitions to multiple-provider CPR, the compression-to-ventilation ratio should generally be 30 compressions to 2 ventilations for adults. This ratio is consistent whether one or multiple providers are performing CPR. In a multiple-provider scenario, one rescuer performs chest compressions while another provides ventilations, allowing for minimal interruptions in chest compressions and ensuring high-quality CPR.
It is crucial that all providers are trained and certified in CPR to avoid potential injuries to the patient, such as broken ribs or sternum. To ensure the effectiveness of CPR, compressions should be at least 5 cm deep and performed at a rate of 100 compressions per minute, following proper hand placement between the line at T4 and T9 on the sternum. Proper technique can maintain blood flow until the heart resumes beating or until further medical assistance is available.