If you draw a line between the nipples, where they intersects the breastbone.
30 compressions to two breaths. ----
compression in 5 cycles
the guidelines for adults, children and infants is 30 chest compressions to 2 rescue breaths.
During chest compressions, you should compress the chest at least 2 inches (5 cm) deep for adults, while allowing full recoil between compressions. For children, compressions should also be about 2 inches, and for infants, approximately 1.5 inches (4 cm). The compressions should be performed at a rate of 100 to 120 compressions per minute. Proper depth and rate are crucial for effective blood circulation during cardiopulmonary resuscitation (CPR).
The amount of chest compressions given in a set amount of time. Usually 100 a minute for adults.
When performing compressions on child or infant casualties the depth of compressions should be a third of the depth of an adult, all whilst being at the same rate of 100-120 compressions per minute at a rate of 30/2.
Generally, you need to give compressions at a rate of 100 per minute to fully circulate the blood. That's depressing 1/3 of the depth of the chest for adults, and 1/4 of the chest depth for infants and children.
30 chest compressions before sweeping the mouth.
In CPR, chest compressions should be performed at a rate of 100 to 120 compressions per minute, with a depth of about 2 to 2.4 inches (5 to 6 cm) for adults. Compressions should allow the chest to fully recoil between compressions, and rescuers should minimize interruptions during the process. If possible, aim for a compression-to-ventilation ratio of 30:2 for adults, and ensure that compressions are delivered in a straight, firm manner. For infants and children, adjustments in compression depth and technique may be necessary to suit their size.
There are 30 chest compressions between ventilation's for 1-rescuer CPR.
The recommended depth of chest compressions in adult CPR is 2 inches
2 person CPR: Cycles of 30 compressions / 2 breaths on an adult Cycles of 15 compressions / 2 breaths on an infant or child