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Apnea–hypopnea index — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Apnea%E2%80%93hypopnea_index
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-09T16:52:47.795Z
SHA-256 of the archived text: 2cf9d2e7c999b587b17024f28e7c83d1b9c1e5b7720a5e27f1e755e7abf8a7f5
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How to cite

Apnea–hypopnea index — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Apnea%E2%80%93hypopnea_index (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_0f9cdcbbffd7 (Metraipolis archive dc_0f9cdcbbffd7, sha256 2cf9d2e7c999b587b17024f28e7c83d1b9c1e5b7720a5e27f1e755e7abf8a7f5)

BibTeX

@misc{dc0f9cdcbbffd7,
  title = {Apnea–hypopnea index — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Apnea%E2%80%93hypopnea_index},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_0f9cdcbbffd7; sha256 2cf9d2e7c999b587b17024f28e7c83d1b9c1e5b7720a5e27f1e755e7abf8a7f5},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Apnea%E2%80%93hypopnea_index. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

The Apnea–Hypopnea Index or Apnoea–Hypopnoea Index (AHI) is an index used to indicate the severity of sleep apnea. It is represented by the number of apnea and hypopnea events per hour of sleep. Apnea is the complete absence of airflow through the nose and mouth. Hypopnea is a partial collapse of the airway, limiting breathing. Apneas (pauses in breathing) must last for at least 10 seconds and be associated with a decrease in blood oxygenation to be considered. Combining AHI and oxygen desaturation gives an overall sleep apnea severity score that evaluates both the number of sleep breathing disruptions and the degree of oxygen desaturation (low oxygen level in the blood) during said disruptions. The AHI is calculated by dividing the number of apnea events by the number of hours of sleep. The AHI values for adults are categorized as: Normal: AHI<5 Mild sleep apnea: 5≤AHI<15 Moderate sleep apnea: 15≤AHI<30 Severe sleep apnea: AHI≥30 For children, because of their different physiology, an AHI in excess of 1 is considered abnormal. Underage pediatric patients presenting with AHI of 2 or greater will often be referred for treatment. The Apnea-Hypopnea Index has been criticized for being too simplistic to accurately rate apnea and hypopnea events for their severity. In one study, mean apnea-hypopnea duration and not AHI was found to be associated with worse hypertension. One long apnea event is clearly worse than the same period broken up into shorter multiple events, with breathing between events, yet it would have the lower AHI.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «Apnea–hypopnea index» — https://en.wikipedia.org/wiki/Apnea%E2%80%93hypopnea_index
Wikidata Q618736: «number of apnea and hypopnea events per hour of sleep» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q618736
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Apnea%E2%80%93hypopnea_index?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1313994299, consultata il 2026-11-09T16:49:27.440Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 37dc2c05a7338a44531d936623de0723b4b233295a37e63cfac83f175ebd264f