Phrenic nerve conduction studies: normative data and technical aspects.

Abstract:

OBJECTIVE:The aim of the present study was to define normative data of phrenic nerve conduction parameters of a healthy population. METHODS:Phrenic nerve conduction studies were performed in 27 healthy volunteers. RESULTS:The normative limits for expiratory phrenic nerve compound muscle action potential were: amplitude (0.47 mv - 0.83 mv), latency (5.74 ms - 7.10 ms), area (6.20 ms/mv - 7.20 ms/mv) and duration (18.30 ms - 20.96 ms). Inspiratory normative limits were: amplitude (0.67 mv - 1.11 mv), latency (5.90 ms - 6.34 ms), area (5.62 ms/mv - 6.72 ms/mv) and duration (13.77 ms - 15.37 ms). CONCLUSION:The best point of phrenic nerve stimulus in the neck varies among individuals between the medial and lateral border of the clavicular head of the sternocleidomastoid muscle and stimulation of both sites, then choosing the best phrenic nerve response, seems to be the appropriate procedure.

journal_name

Arq Neuropsiquiatr

authors

Maranhão AA,Carvalho SRDS,Caetano MR,Alamy AH,Peixoto EM,Filgueiras PDEP

doi

10.1590/0004-282X20170153

subject

Has Abstract

pub_date

2017-12-01 00:00:00

pages

869-874

issue

12

eissn

0004-282X

issn

1678-4227

pii

S0004-282X2017001200869

journal_volume

75

pub_type

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