Version 2.78

Part Descriptions

LP203321-7   Blood flow velocity.A wave.max
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

LP6617-7   US.doppler
Doppler ultrasound detects the shift in frequency of ultrasound signals reflected from moving objects. Conventional Doppler techniques assess the velocity of blood flow by measuring high-frequency, low-amplitude signals from small, fast-moving blood cells. PMID: 16534017 Source: Regenstrief LOINC, PMID: 16534017

Fully-Specified Name

Component
Blood flow velocity.A wave.max
Property
Vel
Time
Pt
System
Tricuspid valve
Scale
Qn
Method
US.doppler

Additional Names

Short Name
TV A-wave Vmax

Basic Attributes

Class
CARD.US.DICOM
Type
Clinical
First Released
Version 2.54
Last Updated
Version 2.54
Order vs. Observation
Observation

Language Variants Get Info

Tag Language Translation
es-MX Spanish (Mexico) Velocidad del flujo sanguíneo Onda A máx.:Vel:Punto temporal:Válvula tricúspide:Cuantitativo:US.doppler
it-IT Italian (Italy) Velocità del flusso sanguigno.onda A.massimo:Vel:Pt:Valvola tricuspide:Qn:Eco.doppler
Synonyms: DICOM Simplified Adult Echo Report concepts Eco Ecografia cardiaca Ecografia.doppler Massimo Punto nel tempo (episodio) Velocità (distanza/tempo) Velocità massima onda-A
zh-CN Chinese (China) 血流速度.A 波.最大值:速度:时间点:三尖瓣:定量型:超声.多普勒
Synonyms: A 型 A 波最大值 动态 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 心脏病学 心脏病学.超声;心脏超声 心脏超声.多普勒 时刻;随机;随意;瞬间 最大;极大值 流 流量;流速;流体 血;全血 血流速度（血流流速、血液流速）.A 波.最大值（极大值、极大、最大、最高值、最高、峰值、高峰） 血流量;血液流量 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(距离/时间);速率;速率(距离/时间)

Example Units

Unit Source
cm/s 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=79923-9