Version 2.78

Term Description

Measured valve excursion during Atrial contraction. It can be in either M-mode or Doppler mode.
Source: Regenstrief LOINC

Part Description

LP72027-3   A wave amplitude
The A wave represents the flow of blood through the mitral or tricuspid valve into the ventricle (ventricular filling) during atrial contraction. During the A wave, upper-case A represents the blood flow velocity (LOINC component: blood flow velocity.A wave) and lower-case a prime (a') represents the annular tissue velocity (LOINC component: tissue velocity.A wave). The A and a' waves follow the E (LOINC component: blood flow velocity.E wave) and e' waves (LOINC component: tissue velocity.E wave), which represent ventricular filling during early diastole, before the start of atrial contraction. PMID: 20451803 Source: DICOM, PMID: 20451803

Fully-Specified Name

Component
A wave amplitude
Property
Len
Time
Pt
System
Heart.valve.XXX
Scale
Qn
Method
US

Additional Names

Short Name
Valve A-wave amp US

Basic Attributes

Class
CARD.US
Type
Clinical
First Released
Version 2.32
Last Updated
Version 2.54

Language Variants Get Info

Tag Language Translation
es-MX Spanish (Mexico) Una amplitud de onda:Len:Punto temporal:Heart.valve.XXX:Cuantitativo:US
it-IT Italian (Italy) Onda A, ampiezza:Len:Pt:Cuore.valvola.XXX:Qn:Ecografia
Synonyms: Ampiezza dell''onda A Eco Ecografia cardiaca Lunghezza Punto nel tempo (episodio) Valvola cardiaca XXX
pt-BR Portuguese (Brazil) Onda A amplitude:Comprimento:Pt:Coração.válvula.XXX:Qn:US
ru-RU Russian (Russian Federation) A волна амплитуда:Дл:ТчкВрм:Сердце.клапан.XXX:Колич:УЗ
Synonyms: Длина Количественный Точка во времени;Момент Ультразвук (УЗ)
zh-CN Chinese (China) A 波振幅:长度:时间点:心脏.瓣膜.XXX:定量型:超声
Synonyms: A 型 A 波幅度;A 波波幅 a-波振幅（波幅、波幅度、幅度） 不明心瓣膜;心.瓣膜.XXX;心.瓣膜.不明部分;心.瓣膜.未作说明的部分;心脏.瓣膜.不明部分;心脏.瓣膜.未作说明的部分;未作说明的心脏瓣膜;此处未作说明的心脏瓣膜 不明的;其他;将在相应消息内其他部分之中加以详细说明;未作详细说明的;未作说明的;未做说明的标本;未加规定的;未加说明的标本;杂项 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 心 心脏病学 心脏病学.超声;心脏超声 时刻;随机;随意;瞬间 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 长;长短

Example Units

Unit Source
mm 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=59100-8