LOINC
Version 2.66

79922-1Tricuspid valve annulus Tissue velocity.A-wave.max by US.tissue dopplerActive

Component
Tissue velocity.A wave.max
Property
Vel
Time
Pt
System
Tricuspid valve.annulus
Scale
Qn
Method
US.tissue doppler

Additional Names

Short Name
TV ann a-prime Vmax TDI

Part Descriptions

LP203323-3   Tissue 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

LP189366-0   US.tissue 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. In tissue doppler ultrasound, the same Doppler principles are used to quantify the higher-amplitude, lower-velocity signals of myocardial tissue motion. [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)
组织速度.A 波.最大值:速度:时间点:三尖瓣.环:定量型:超声.组织多普勒

Example Units

Unit Source
cm/s Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=79922-1