Final answer:
The correct CPR guideline to use for an 11-year-old patient showing signs of puberty is the adult guideline. The patient's physiological development suggests they require adult CPR techniques, including chest compressions at a depth of at least 5 cm and a rate of 100 compressions per minute.
Step-by-step explanation:
When initiating CPR on a patient who is 11 years old and shows signs of puberty, such as breast development, the appropriate CPR guideline to follow would be the adult guideline. The physical signs of puberty, including the development of breast tissue and potential height increase of up to 3 inches a year, suggest that an 11-year-old may physiologically resemble an adult more than a child. CPR technique involves pressing the sternum between T4 and T9 vertebrae, which allows for blood to be manually compressed and circulated in the systemic and pulmonary circuits, vital for tissues like the brain that are susceptible to damage from lack of oxygen.
It is crucial to perform chest compressions at a depth of at least 5 cm and at a rate of 100 compressions per minute. These rules apply to adult patients, but when signs of puberty are evident in a young person, they are treated with the same guidelines for more effective care. Proper positioning and technique are important to prevent injuries like broken ribs, a broken sternum, or damage to the liver from improperly placed hands.