iNO

Medical abbreviation · Respiratory

iNO
Stands forInhaled nitric oxide
CategoriesMedical

iNO stands for Inhaled nitric oxide, a respiratory abbreviation.

Gas delivered through a ventilator or nasal cannula that relaxes blood vessels only in ventilated parts of the lung, lowering pulmonary pressures and improving oxygenation. It is approved for newborns with hypoxic respiratory failure and pulmonary hypertension.

Example: Term newborn with PPHN, oxygenation index 28: iNO started at 20 ppm.

Usage notes

The FDA approved iNO in 1999 for term and near-term infants. It is also used during right heart catheterization to test pulmonary vasoreactivity and after cardiac surgery or lung transplantation, while in adult ARDS it improves oxygen levels without improving survival. Abrupt withdrawal can cause rebound pulmonary hypertension, and methemoglobin levels are monitored.

More respiratory abbreviations

  • HFNC – High-flow nasal cannula
  • HP – Hypersensitivity pneumonitis
  • HSAT – Home sleep apnea test
  • HTX – Hemothorax
  • ICS – Inhaled corticosteroid
  • ILD – Interstitial lung disease
  • IPF – Idiopathic pulmonary fibrosis
  • LABA – Long-acting beta2-agonist
  • LAMA – Long-acting muscarinic antagonist
  • LLL – Left lower lobe
  • LPM – Liters per minute
  • LRTI – Lower respiratory tract infection

See all 109 respiratory abbreviations →

Edited by the AbbreviationList.com team. Spotted an error or a missing meaning? Contact us.

This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.