2 seconds
The fetal circulation is based mainly on the veinous circulation during pregnancy. Once the uterine connections are lost, the adult circulation takes over.
1 breath every 5 seconds for an adult.
1 breath every 3 seconds
The ductus arteriosus and foramen ovale are important for systemic circulation. This is the type of circulation maintained by fetal pigs but the adult heart requires pulmonary and systemic circulation.
The ductus arteriosus and foramen ovale are important for systemic circulation. This is the type of circulation maintained by fetal pigs but the adult heart requires pulmonary and systemic circulation.
In fetal circulation, the placenta provides oxygen and nutrients to the fetus, so the lungs are not used for oxygen exchange - instead, a bypass called the ductus arteriosus shunts blood away from the lungs. After birth, the lungs take over oxygen exchange, the ductus arteriosus closes, and the foramen ovale between the atria closes, redirecting blood flow through the heart to support pulmonary circulation.
6.8
Give breath over a period of 1 second.
25 seconds.
For children and infants: once every three seconds For adults: once every five seconds
To restore heart function and circulation in the entire body.