A patient with a T8 ASIA A SCI shows dominant epigastric rise with reduced chest movement during inspiration. Which breathing pattern does this most closely represent?

A patient with a T8 ASIA A SCI shows dominant epigastric rise with reduced chest movement during inspiration. Which breathing pattern does this most closely represent?

• A. 4-diaphragm
• B. 2-neck and 2-diaphragm
• C. 3-diaphragm and 1-chest
• D. 2-diaphragm and 2-chest

Answer: (C)

Dominant diaphragmatic breathing with limited chest wall movement is expected when intercostal muscles are weakened by a thoracic SCI while the diaphragm remains functional. An epigastric rise on inspiration shows the abdomen (diaphragm) is doing most of the work, with only a small amount of chest expansion. The best match for this pattern is the one describing three-diaphragm and one-chest, meaning diaphragmatic activity is predominant with a minor chest contribution. The other patterns would imply either more chest involvement, no chest movement, or inclusion of neck accessory muscles, which isn’t suggested here.

Dominant diaphragmatic breathing with limited chest wall movement is expected when intercostal muscles are weakened by a thoracic SCI while the diaphragm remains functional. An epigastric rise on inspiration shows the abdomen (diaphragm) is doing most of the work, with only a small amount of chest expansion. The best match for this pattern is the one describing three-diaphragm and one-chest, meaning diaphragmatic activity is predominant with a minor chest contribution. The other patterns would imply either more chest involvement, no chest movement, or inclusion of neck accessory muscles, which isn’t suggested here.