Correct!
1. A positive sniff test confirms paralysis of a hemidiaphragm.
A phrenic nerve EMG or a chest ultrasound can also confirm the presence of the paralysis of a diaphragm. On an ultrasound, a hemidiaphragm paralysis appears as a lack of movement or paradoxical upward movement of the affected hemidiaphragm during inspiration. The paralyzed diaphragm may also show significantly reduced thickening compared to the healthy side when breathing in, indicating muscle weakness or atrophy; this can be visualized using M-mode ultrasound to assess the movement and thickness changes during respiration. His pulmonary function tests showed a restrictive defect. An obstructive defect would suggest another or additional diagnosis.
What are treatment options are available for diaphragmatic paralysis? (Click on the correct answer to be directed to the seventh and final page)