21. The accessory phrenic nerve connects to the phrenic nerve in the thorax or the root of the neck. 22. Some sources describe the right phrenic nerve as innervating the gallbladder, other sources make no such mention. 23. Irritation of the phrenic nerve ( or the tissues supplied by it ) leads to the hiccup reflex. 24. They thus give rise to the motor and sensory innervation of the muscular diaphragm by the phrenic nerve. 25. When the portion of pericardium lying between the two phrenic nerves is excised it is called total pericardiectomy. 26. Other rare but serious complications from brachial plexus block include pneumothorax and persistent paresis of the phrenic nerve. 27. Some, like Doran, can benefit from an implanted pacemaker that stimulates the phrenic nerve controlling the diaphragm. 28. Most often it is a branch of the nerve to the subclavius and may contain numerous phrenic nerve fibers. 29. Many patients whose phrenic nerve doesn't function rely on a standard ventilator that blows air into the windpipe. 30. They gave him the " Phrenic Nerve Crush " destroying one of the nerves that controls the diaphragm.