The correct answer would be - PNP or diaphragm pacing/pacemaker and reconstruction of the phrenic nerve.
Explanation:
The phrenic nerve is the most important nerve in the process of respiration or breathing as it stimulates and transfers the signal from the brain to the diaphragm muscles that help in respiratory exchange.
If there is any injury then the signal can not be transmitted and there would be no respiratory exchange, to support the respiratory exchange in such case the mechanical stimulation takes place with help of the phrenic nerve pacing technique in which a pacemaker maintain the signal to muscles of the diaphragm for respiration other prominent way is the reconstruction of these nerves.
