17 research outputs found
Correlation of Swallowing Function With Bilateral Diaphragmatic Movement in Hemiplegic Stroke Patients
Electromyographic Monitoring for Prevention of Phrenic Nerve Palsy in Second-Generation Cryoballoon Procedures
Phrenic nerve conduction studies as a biomarker of respiratory insufficiency in amyotrophic lateral sclerosis
Assessing the effects of inspiratory muscle training in a patient with unilateral diaphragm dysfunction
Evaluation of Phrenic Nerve and Diaphragm Function with Peripheral Nerve Stimulation and M-Mode Ultrasonography in Potential Pediatric Phrenic Nerve or Diaphragm Pacing Candidates
Two-dimensional ultrasound imaging of the diaphragm: Quantitative values in normal subjects
Phrenic nerve conduction in healthy subjects
Epub ahead of printINTRODUCTION: Assessment of diaphragm compound muscle action potential by noninvasive phrenic nerve stimulation at the neck is well described. However, normal values in a large cohort of healthy subjects are lacking. Our objective was to determine reference values of phrenic nerve conduction in healthy subjects. METHODS: We recruited 155 healthy subjects (25-79 years old) and measured mean amplitude (PhrenAmp) and latency (PhrenLat) of motor responses according to Bolton's method. RESULTS: The lower limit for PhrenAmp was 0.28 and 0.25 mV and the upper limit for PhrenLat was 8.41 and 8.56 ms for right and left side respectively. PhrenLat was correlated with age. PhrenAmp, PhrenLat and area were significantly higher in men. Tolerance to phrenic nerve stimulation was excellent. DISCUSSION: Our study provides normative values of phrenic nerve motor responses in a large cohort of healthy subjects and identifies age and sex as factors of variation