Diastolic Function: Difference between revisions

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==Left ventricular diastolic function==
==Left ventricular diastolic function==
===Normal Values ​​diastolic parameters===
===Normal Values ​​diastolic parameters===
{| class="wikitable" cellpadding="0" cellspacing="0" border="0" width="600px"
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!rowspan="2" valign="middle"|Measurement
!colspan="4"|Age group (y)
|-
!16-20 21-40 41-60 >60
IVRT (ms) 50 ± 9 (32-68) 67 ± 8 (51-83) 74 ± 7 (60-88) 87 ± 7 (73-101)
E/A ratio 1.88 ± 0.45 (0.98-2.78) 1.53 ± 0.40 (0.73-2.33) 1.28 ± 0.25 (0.78-1.78) 0.96 ± 0.18 (0.6-1.32)
DT (ms) 142 ± 19 (104-180) 166 ± 14 (138-194) 181 ± 19 (143-219) 200 ± 29 (142-258)
A duration (ms) 113 ± 17 (79-147) 127 ± 13 (101-153) 133 ± 13 (107-159) 138 ± 19 (100-176)
PV S/D ratio 0.82 ± 0.18 (0.46-1.18) 0.98 ± 0.32 (0.34-1.62) 1.21 ± 0.2 (0.81-1.61) 1.39 ± 0.47 (0.45-2.33)
PV Ar (cm/s) 16 ± 10 (1-36) 21 ± 8 (5-37) 23 ± 3 (17-29) 25 ± 9 (11-39)
PV Ar duration (ms) 66 ± 39 (1-144) 96 ± 33 (30-162) 112 ± 15 (82-142) 113 ± 30 (53-173)
Septal e´ (cm/s) 14.9 ± 2.4 (10.1-19.7) 15.5 ± 2.7 (10.1-20.9) 12.2 ± 2.3 (7.6-16.8) 10.4 ± 2.1 (6.2-14.6)
Septal e´/a´ ratio 2.4* 1.6 ± 0.5 (0.6-2.6) 1.1 ± 0.3 (0.5-1.7) 0.85 ± 0.2 (0.45-1.25)
Lateral e´ (cm/s) 20.6 ± 3.8 (13-28.2) 19.8 ± 2.9 (14-25.6) 16.1 ± 2.3 (11.5-20.7) 12.9 ± 3.5 (5.9-19.9)
Lateral e´/a´ ratio 3.1* 1.9 ± 0.6 (0.7-3.1) 1.5 ± 0.5 (0.5-2.5) 0.9 ± 0.4 (0.1-1.7)
Data are expressed as mean ± SD (95% confidence interval). Note that for e´ velocity in subjects aged 16 to 20 years, values overlap with those for subjects aged 21 to 40 years. This is because e´ increases progressively with age in children and adolescents. Therefore, the e´ velocity is higher in a normal 20-year-old than in a normal 16-year-old, which results in a somewhat lower average e´ value when subjects aged 16 to 20 years are considered.
* Standard deviations are not included because these data were computed, not directly provided in the original articles from which they were derived.
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===Schematic diastolic filling patterns===
===Schematic diastolic filling patterns===
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