Abnormal sniff test
Previous PTX and VATS. Progressive dyspnoea, ? phrenic nerve injury during surgery
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During normal breathing, there is reduced movement of the right hemidiaphragm compared to the the left. During sniffing there is paradoxical movement of the right hemidiaphragm. Normal movement of the left hemidiaphragm is seen.
Findings consistent with right hemidiaphragm palsy.
Good example of diaphragm paralysis due to phrenic nerve palsy.
See sniff test for a description of the procedure.