LOINC
Version 2.66

80065-6Mitral valve A-wave duration by US.dopplerActive

Component
A wave duration
Property
Time
Time
Pt
System
Mitral valve
Scale
Qn
Method
US.doppler

Additional Names

Short Name
MV A-wave duration

Part Descriptions

LP99764-0   A wave duration
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

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

zh-CNChinese (China)
A 波持续时间:时间:时间点:二尖瓣:定量型:超声.多普勒
it-ITItalian (Italy)
Onda A, durata:Tempo:Pt:Valvola mitrale:Qn:Eco.doppler

Example Units

Unit Source
ms Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=80065-6