Version 2.77

Term Description

Heart rates are considered reactive ("normal") if two or more accelerations occur within a 20-minute period. Nonreactive heart rate is one in which not enough accelerations are detected in a 40-minute period and can be associated with several findings, including the fetus was asleep during the test in which case the test time may be extended. Nonreactive results can also occur if the mother is taking certain medications or that the fetus is not getting enough oxygen.[]
Source: Regenstrief LOINC

Reference Information

Type Source Reference
Article NCBI PubMed Manning FA, Platt LD, Sipos L. Antepartum fetal evaluation: development of a fetal biophysical profile. Am J Obstet Gynecol. 1980;136(6):787-795. Link to PubMed

Fully-Specified Name

Heart rate reactivity

Additional Names

Short Name
Fetal NST by US

Example Answer List: LL4994-1

Source: Association of Public Health Laboratories
Answer Code Score Answer ID
NonreactiveCopyright ID:131194007 Non-reactive (qualifier value) LA15256-3
ReactiveCopyright ID:11214006 Reactive (qualifier value) LA15255-5

Basic Attributes

First Released
Version 1.0j-a
Last Updated
Version 2.71
Change Reason
Release 2.71: COMPONENT: Removed "biophysical profile" since NST can be done by itself or as part of a biophysical profile (BPP).; DefinitionDescription: Updated term description based on information from ACOG.; AnswerListId: Updated answer list to align with commonly reported ordinal results of "reactive" and "nonreactive".;
Order vs. Observation

Member of these Panels

LOINC Long Common Name
48770-2 Fetal Biophysical profile panel US

Language Variants Get Info

Tag Language Translation
es-AR Spanish (Argentina) perfil biofísico.reactividad a la frecuencia cardíaca:función:punto en el tiempo:^feto:ordinal:ultrasonido
es-MX Spanish (Mexico) Perfil biofísico reactividad de frecuencia cardíaca:Fcn:Punto temporal:^ Feto:Ordinal:US
it-IT Italian (Italy) Reattività frequenza cardiaca:Fcn:Pt:^feto:Ord:Ecografia
Synonyms: Eco Ecografia ostetrica Funzione Punto nel tempo (episodio)
pt-BR Portuguese (Brazil) Perfil biofísico fetal.cardiotocografia:Fcn:Pt:^Feto:Ord:US
Synonyms: ; BPP.heart rate reactivity; Function; Point in time; Random; Fet; Fetal; Ql; Ordinal; QL; Qualitative; Qual; Screen; Ultrasound; ULS; Sonogram; Sonography; Sonograph; Echography; Prof; Pulse; Heart beat; OBSTERICAL.ULTRASOUND; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics
ru-RU Russian (Russian Federation) Биофизический профиль.частота сердечных сокращений реактивность:Функц:ТчкВрм:^Плод:Пор:УЗ
Synonyms: Порядковый Точка во времени;Момент Ультразвук (УЗ) Функция
zh-CN Chinese (China) 生物物理概况.心率反应性:功能:时间点:^胎儿:序数型:超声
Synonyms: 产科 产科.超声;产科.超声.印象与测量指标;产科学.超声;产科学.超声.印象与测量指标;产科学检查与测量指标.超声.印象与测量指标;产科学超声印象与测量指标 产科学 依次型;分类顺序型;定性的;序数型(或称等级型);性质上的;有序型;有序性分类应答;有序性分类结果;秩次型;等级型;筛查;顺序型 心搏率;心跳速率 时刻;随机;随意;瞬间 生物物理概貌.心率反应性;生物物理状况.心率反应性;生物物理相.心率反应性;生物物理指数.心率反应性;生物物理图像.心率反应性;生物物理图.心率反应性;biophysical profile;BPP;生物物理概况.心跳反应性 胎;超系统 - 胎儿 超声检查方法;超声检查法;超声波;超声波检查方法;超声波检查法 速度

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