Version 2.78

Part Descriptions

LP140652-1   Volume expired during 1.0 s of forced expiration
The forced expiratory volume in one second (FEV1) is the volume of air that can be exhaled in one second. It is usually measured as part of the forced vital capacity (FVC), which is the total amount of air that can be exhaled in a full forced exhalation. The pattern of FVC, FEV1, and the FEV1/FVC ratio can be used together to determine the type of respiratory disease. A normal or low FVC with an FEV1/FVC of <0.7 indicates obstructive pulmonary disease, while low FVC and FEV1/FVC of >0.7 indicates respiratory disease. Normal values for FEV1 and FVC vary based on several factors including age, sex, height, and weight. PMID: 15023009 Source: Regenstrief LOINC

LP91339-9   Volume expired during 1.0 s of forced expiration/Forced vital capacity
FEV1/FVC (FEV1%) is the ratio of FEV1 to FVC. In healthy adults this should be approximately 75-80%. In obstructive diseases (asthma, COPD, chronic bronchitis, emphysema) FEV1 is diminished because of increased airway resistance to expiratory flow; the FVC may be decreased as well, due to the premature closure of airway in expiration, just not in the same proportion as FEV1 (for instance, both FEV1 and FVC are reduced, but the former is more affected because of the increased airway resistance). This generates a reduced value (<80%, often ~45%). In restrictive diseases (such as pulmonary fibrosis) the FEV1 and FVC are both reduced proportionally and the value may be normal or even increased as a result of decreased lung compliance.

A derived value of FEV1% is FEV1% predicted, which is defined as FEV1% of the patient divided by the average FEV1% in the population for any person of similar age, sex and body composition. 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
Volume expired during 1.0 s of forced expiration/Forced vital capacity
Property
VRto
Time
Pt
System
Respiratory system
Scale
Qn
Method

Additional Names

Short Name
FEV1/FVC

Basic Attributes

Class
PULM
Type
Clinical
First Released
Version 1.0l
Last Updated
Version 2.73
Common Test Rank Get Info
1240

Member of these Panels

LOINC Long Common Name
52745-7 Continuity Assessment Record and Evaluation (CARE) tool - Post Acute Care (PAC) - Discharge
52743-2 Deprecated Continuity Assessment Record and Evaluation (CARE) tool - Acute Care
52748-1 Deprecated Continuity Assessment Record and Evaluation (CARE) tool - Home Health Admission
52746-5 Deprecated Continuity Assessment Record and Evaluation (CARE) tool - Interim
52744-0 Deprecated Continuity Assessment Record and Evaluation (CARE) tool - Post Acute Care (PAC) - Admission

Language Variants Get Info

Tag Language Translation
es-AR Spanish (Argentina) volumen espiratorio.forzado en el primer segundo/capacidad vital.forzada:relación de volumen:punto en el tiempo:aparato respiratorio:cuantitativo:
es-MX Spanish (Mexico) Volumen expirado durante 1.0 s de espiración forzada / Capacidad vital forzada:VRto:Punto temporal:Sistema respiratorio:Cuantitativo:
it-IT Italian (Italy) Volume espirato durante 1,0Secondi di espirazione forzata/Capacità vitale forzata:Vrto:Pt:Apparato respiratorio:Qn:
Synonyms: CVF FEV1 Gestione ventilazione polmonare Punto nel tempo (episodio) Rapporto di Volume Volume espirato
pt-BR Portuguese (Brazil) Volume expiratório^forçado no 1º seg/Capacidade vital.forçada:VRto:Pt:Sistema Respiratório:Qn:
Synonyms: ; Vol; FEV1/VFC; exp; Exp; FEV1/VFC; FVC; Volume ratio; Point in time; Random; Lungs; Breathing; RS; Quantitative; QNT; Quant; Quan; S prime; PST; After; PULMONARY; FEV1; FEV1/FVC
ru-RU Russian (Russian Federation) FEV1/Форсированная жизненная ёмкость:ОбОтн:ТчкВрм:Дыхательная система:Колич:
Synonyms: Количественный Объём выдоха за 1,0 с форсированный выдох Объём отношение Точка во времени;Момент ФЖЁЛ
zh-CN Chinese (China) 用力呼气 1.0 秒过程中所呼出的体积/用力肺活量:体积比率:时间点:呼吸系统:定量型:
Synonyms: forced vital capacity forced vital capacity;FVC;时间肺活量;尽力最大吸气后，尽力尽快呼气所能呼出的最大气量;略小于没有时间限制条件下测得的肺活量;最大肺活量 S 型 体积.呼气;呼出体积;呼气体积 体积比 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 吐气 呼 呼出 呼出;呼出气体 呼吸道标本（样品、样本）;呼吸系统标本（样品、样本） 容积 时刻;随机;随意;瞬间 用力呼气 1.0 s 过程中所呼出的体积 肺部测量指标与呼吸机管理

Example Units

Unit Source
% 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=19926-5