Version 2.80

Part Description

LP145624-5   Apnea hypopnea index
The apnea-hypopnea index (AHI) is an index of sleep apnea severity that combines apneas and hypopneas. The apneas (pauses in breathing) must last for at least 10 seconds and are associated with a decrease in blood oxygenation. Combining these gives an overall sleep apnea severity score that evaluates both number sleep disruptions and degree of oxygen desaturation (low blood level).

The AHI, as with the separate apnea index and hypopnea index, is calculated by dividing the number of events by the number of hours of sleep. (AHI values are typically categorized as 5-15/hr = Mild; 15-30/hr = Moderate; and > 30/h = Severe.) Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia , Wikipedia

Fully-Specified Name

Component
Apnea hypopnea index
Property
NRat
Time
24H
System
^Patient
Scale
Qn
Method

Additional Names

Long Common Name
Apnea hypopnea index 24 hour
Short Name
Apnea hypopnea index 24h nRate

Basic Attributes

Class
PULM
Type
Clinical
First Released
Version 2.40
Last Updated
Version 2.73 (MIN)
Order vs. Observation
Observation
Common Test Rank Get Info
9659

Formula (Readable)

(apnea events+hypopnea events)/hours slept

Member of these Panels

LOINC Long Common Name
69999-1 Positive airway pressure panel

Language Variants Get Info

Tag Language Translation
el-GR Greek (Greece) Δείκτης άπνοιας-υπόπνοιας:NRat:24H:^Ασθενής:Qn:
Synonyms: NRat Άπνοια+υπόπνοια Δείκτης άπνοιας-υπόπνοιας Δείκτης υπόπνοιας Υπόπνοια
es-MX Spanish (Mexico) Índice de apnea hipopnea:NRat:24H:^ Paciente:Cuantitativo:
it-IT Italian (Italy) Apnea ipopnea, indice:NRat:24h:^Paziente:Qn:
Synonyms: 24 Ore Apnea + ipopnea Gestione ventilazione polmonare Indice apnea ipopnea Indice di ipopnea Indice numerico paziente
ru-RU Russian (Russian Federation) Апноэ гипопноэ индекс:КолСкор:24 часа:^Пациент:Колич:
Synonyms: Количественный Количество скорость
zh-CN Chinese (China) 呼吸暂停低通气指数:计数型速率:24小时:^患者:定量型:
Synonyms: 1天;1日;24.0小时;一天;一日;二十四个小时;二十四小时 医疗服务对象;客户;病人;病患;病号;超系统 - 病人 单位时间内的数量或计数;数量/时间;数量型速率;数量型速率或计数型速率;数量型速率或计数型速率(单位时间);数量或计数型速率;计数/时间;计数型速率(单位时间);数量或计数型速率(单位时间) 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 呼吸减弱;呼吸不足 呼吸减弱指数;呼吸不足指数 呼吸暂停（窒息、窒息症）+低通气（呼吸减弱、呼吸不足） 肺部测量指标与呼吸机管理

Example Units

Unit Source
{events}/h Example UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=69990-0