Echopedia

Normal Values

Revision as of 15:43, 13 September 2009 by 213.46.133.193 (talk) (→‎VS Guideline - Table 3)

Left Ventricular Mass and Geometry

Reference limits and partition values of left ventricular mass and geometry[1]
  Women Men
Reference
range 		Mildly
abnormal 		Moderately
abnormal 		Severely
abnormal 		Reference
range 		Mildly
abnormal 		Moderately
abnormal 		Severely
abnormal
Linear Method
LV mass, g 67–162 163–186 187–210 ≥211 88–224 225–258 259–292 ≥293
LV mass/BSA, g/m2 43–95 96–108 109–121 ≥122 49–115 116–131 132–148 ≥149
LV mass/height, g/m 41–99 100–115 116–128 ≥129 52–126 127–144 145–162 ≥163
LV mass/height2, g/m2 18–44 45–51 52–58 ≥59 20–48 49–55 56–63 ≥64
Relative wall thickness, cm 0.22–0.42 0.43–0.47 0.48–0.52 ≥0.53 0.24–0.42 0.43–0.46 0.47–0.51 ≥0.52
Septal thickness, cm 0.6–0.9 1.0–1.2 1.3–1.5 ≥1.6 0.6–1.0 1.1–1.3 1.4–1.6 ≥1.7
Posterior wall thickness, cm 0.6–0.9 1.0–1.2 1.3–1.5 ≥1.6 0.6–1.0 1.1–1.3 1.4–1.6 ≥1.7
2D Method
LV mass, g 66–150 151–171 172–182 >193 96–200 201–227 228–254 >255
LV mass/BSA, g/m2 44–88 89–100 101–112 ≥113 50–102 103–116 117–130 ≥131
  • BSA, Body surface area; LV, left ventricular; 2D, 2-dimensional.
  • Green values: Recommended and best validated.

Left Ventricular Size

Reference limits and partition values of left ventricular size[1]
  Women Men
Reference
range 		Mildly
abnormal 		Moderately
abnormal 		Severely
abnormal 		Reference
range 		Mildly
abnormal 		Moderately
abnormal 		Severely
abnormal
LV dimension
LV diastolic diameter 3.9–5.3 5.4–5.7 5.8–6.1 ≥6.2 4.2–5.9 6.0–6.3 6.4–6.8 ≥6.9
LV diastolic diameter/BSA, cm/m2 2.4–3.2 3.3–3.4 3.5–3.7 ≥3.8 2.2–3.1 3.2–3.4 3.5–3.6 ≥3.7
LV diastolic diameter/height, cm/m 2.5–3.2 3.3–3.4 3.5–3.6 ≥3.7 2.4–3.3 3.4–3.5 3.6–3.7 ≥3.8
LV volume
LV diastolic volume, mL 56–104 105–117 118–130 ≥131 67–155 156–178 179–201 ≥201
LV diastolic volume/BSA, mL/m2 35–75 76–86 87–96 ≥97 35–75 76–86 87–96 ≥97
LV systolic volume, mL 19–49 50–59 60–69 ≥70 22–58 59–70 71–82 ≥83
LV systolic volume/BSA, mL/m2 12–30 31–36 37–42 ≥43 12–30 31–36 37–42 ≥43
  • BSA, body surface area; LV, left ventricular.
  • Green values: Recommended and best validated.

Left Ventricular Function

Reference limits and values and partition values of left ventricular function[1]
  Women Men
Reference range Mildly abnormal Moderately abnormal Severely abnormal Reference range Mildly abnormal Moderately abnormal Severely abnormal
Linear method
Endocardial fractional shortening, % 27–45 22–26 17–21 ≤16 25–43 20–24 15–19 ≤14
Midwall fractional shortening, % 15–23 13–14 11–12 ≤10 14–22 12–13 10–11 ≤10
2D Method
Ejection fraction, % ≥55 45–54 30–44 <30 ≥55 45–54 30–44 <30
  • 2D, Two-dimensional.
  • Green values: Recommended and best validated.

Right Ventricular and Pulmonary Artery Size

Reference limits and partition values of right ventricular and pulmonary artery size[1]
  Reference range Mildly abnormal Moderately abnormal Severely abnormal
RV dimensions
Basal RV diameter (RVD 1), cm 2.0–2.8 2.9–3.3 3.4–3.8 ≥3.9
Mid-RV diameter (RVD 2), cm 2.7–3.3 3.4–3.7 3.8–4.1 ≥4.2
Base-to-apex length (RVD 3), cm 7.1–7.9 8.0–8.5 8.6–9.1 ≥9.2
RVOT diameters
Above aortic valve (RVOT 1), cm 2.5–2.9 3.0–3.2 3.3–3.5 ≥3.6
Above pulmonic valve (RVOT 2), cm 1.7–2.3 2.4–2.7 2.8–3.1 ≥3.2
PA diameter
Below pulmonic valve (PA 1), cm 1.5–2.1 2.2–2.5 2.6–2.9 ≥3.0
  • RV, Right ventricular; RVOT, right ventricular outflow tract; PA, pulmonary artery.
  • Data from Foale et al.[2]

Right Ventricular Size and Function

Reference limits and partition values of right ventricular size and function as measured in the apical 4-chamber view[1]
Reference range Mildly abnormal Moderately abnormal Severely abnormal
RV diastolic area, cm2 11–28 29–32 33–37 ≥38
RV systolic area, cm2 7.5–16 17–19 20–22 ≥23
RV fractional area change, % 32–60 25–31 18–24 ≤17
  • RV, Right ventricular.
  • Data from Weyman.[3]

Left Atrial Dimensions / Volumes

Reference limits and partition values for left atrial dimensions/volumes[1]
  Women Men
Reference range Mildly abnormal Moderately abnormal Severely abnormal Reference range Mildly abnormal Moderately abnormal Severely abnormal
Atrial dimensions

LA diameter, cm 2.7–3.8 3.9–4.2 4.3–4.6 ≥4.7 3.0–4.0 4.1–4.6 4.7–5.2 ≥5.2
LA diameter/BSA, cm/m2 1.5–2.3 2.4–2.6 2.7–2.9 ≥3.0 1.5–2.3 2.4–2.6 2.7–2.9 ≥3.0
RA minor-axis dimension, cm 2.9–4.5 4.6–4.9 5.0–5.4 ≥5.5 2.9–4.5 4.6–4.9 5.0–5.4 ≥5.5
RA minor-axis dimension/BSA, cm/m2 1.7–2.5 2.6–2.8 2.9–3.1 ≥3.2 1.7–2.5 2.6–2.8 2.9–3.1 ≥3.2
Atrial area
LA area, cm2 ≤20 20–30 30–40 >40 ≤20 20–30 30–40 >40
Atrial volumes
LA volume, mL 22–52 53–62 63–72 ≥73 18–58 59–68 69–78 ≥79
LA volume/BSA, mL/m2 22 ± 6 29–33 34–39 ≥40 22 ± 6 29–33 34–39 ≥40
  • BSA, Body surface area; LA, left atrial; RA, right atrial.
  • Green values: Recommended and best validated.


Aortic valve stenosis - severity

Recommendations for classification of AS severity
  Aortic sclerosis Mild Moderate Severe
Aortic jet velocity (m/s) ≤2.5 m/s 2.6-2.9 3.0-4.0 >4.0
Mean gradient (mmHg) - <20 (<30a) 20-40b (30-50a) >40b (>50a)
AVA (cm2) - >1.5 1.0-1.5 <1
Indexed AVA (cm2/m2)   >0.85 0.60-0.85 <0.6
Velocity ratio   >0.50 0.25-0.50 <0.25
  • aESC Guidelines.
  • bAHA/ACC Guidelines.

VS Guideline - Table 5

Assessment of mitral valve anatomy according to the Wilkins score64
Grade Mobility Thickening Calcification Subvalvular Thickening
1 Highly mobile valve with only leaflet tips restricted Leaflets near normal in thickness (4-5 mm) A single area of increased echo brightness Minimal thickening just below the mitral leaflets
2 Leaflet mid and base portions have normal mobility Midleaflets normal, considerable thickening of margins (5-8 mm) Scattered areas of brightness confined to leaflet margins Thickening of chordal structures extending to one-third of the chordal length
3 Valve continues to move forward in diastole, mainly from the base Thickening extending through the entire leaflet (5-8mm) Brightness extending into the mid-portions of the leaflets Thickening extended to distal third of the chords
4 No or minimal forward movement of the leaflets in diastole Considerable thickening of all leaflet tissue (>8-10mm) Extensive brightness throughout much of the leaflet tissue Extensive thickening and shortening of all chordal structures extending down to the papillary muscles
  • The total score is the sum of the four items and ranges between 4 and 16.

VS Guideline - Table 7

Recommendations for data recording and measurement in routine use for mitral stenosis quantitation
Data element Recording Measurement
Planimetry
  • 2D parasternal short-axis view
  • determine the smallest orifice by scanning from apex to base
  • positioning of measurement plan can be oriented by 3D echo
  • lowest gain setting to visualize the whole mitral orifice
  • contour of the inner mitral orifice
  • include commissures when opened
  • in mid-diastole (use cine-loop)
  • average measurements if atrial fibrillation
Mitral flow
  • continuous-wave Doppler
  • apical windows often suitable (optimize intercept angle)
  • adjust gain setting to obtain well-defined flow contour
  • mean gradient from the traced contour of the diastolic mitral flow
  • pressure half-time from the descending sLope of the E-wave (mid-diastole slope if not linear)
  • average measurements if atrial fibrillation
Systolic pulmonary artery pressure
  • continuous-wave Doppler
  • multiple acoustic windows to optimize intercept angle
  • maximum velocity of tricuspid regurgitant flow
  • estimation of right atrial pressure according to inferior vena cava diameter
Valve anatomy
  • parasternal short-axis view
  • parasternal long-axis view
  • apical two-chamber view
  • valve thickness (maximum and heterogeneity)
  • commissural fusion
  • extension and location of localized bright zones (fibrous nodutes or calcification)
  • valve thickness
  • extension of calcification
  • valve pliability
  • subvalvular apparatus (chordal thickening, fusion, or shortening)
  • subvalvular apparatus (chordal thickening, fusion, or shortening) Detail each component and summarize in a score

VS Guideline - Table 9

Recommendations for classification of mitral stenosis severity
  Mild Moderate Severe
Specific findings
Valve area (cm2) >1.5 1.0-1.5 <1.0
Supportive findings
Mean gradient (mmHg)a <5 5-10 >10
Pulmonary artery pressure (mmHg) <30 30-50 >50
  • aAt heart rates between 60 and 80 bpm and in sinus rhythm.

VS Guideline - Table 10

Findings indicative of haemodynamically significant tricuspid stenosis
Specific findings
Mean pressure gradient ≥5 mmHg
Inflow time-velocity integral >60 cm
T1/2 ≥190 ms
Valve area by continuity equationa ≤1 cm2a
Supportive findings
Enlarged right atrium ≥moderate
DHated inferior vena cava
  • aStroke volume derived from left or right ventricular outflow. In the presence of more than mild TR, the derived valve area will be underestimated. Nevertheless, a value ≤1 cm2 implies a significant haemodynamic burden imposed by the combined lesion.

VS Guideline - Table 11

Grading of pulmonary stenosis
  Mild Moderate Severe
Peak velocity (m/s) <3 3-4 >4
Peak gradient (mmHg) <36 36-64 >64

References

<biblio>

  1. Foale pmid=3730205
  2. Weyman isbn=0812112075
  3. ASE pmid=16458610

</bilbio>

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