Am J Med 2010;123:913-21
• 大動脈弁peak velocityと心雑音
• AV peak velocity <1.3m/secでは19%, ≥4m/secでは100%
Systolic murmurを聴取する.
Murmurの部位とvelocityの値は以下の通り.
Isolated base 1.3-2.1m/sec
Isolated apical, small apical-base 1.5-2.5m/sec
The American Journal of Medicine, Vol 123, No 10, October 2010
broad apical-base ≥2.1m/sec
Figure 1 The 6 murmur patterns are distinguished by their distribution with respect to
a key landmark, the 3rd left parasternal interspace (indicated by “ϩ” on each drawing).
Two patterns (broad apical-base pattern and small apical-base pattern, top 2 rows) extend
above and below this landmark, usually to both sides of the sternum. The “broad apical-
base” pattern extends at least from the first right parasternal space to the apex (ie, 4th
The American Journal of Medicine, Vol 123, No 10, October 2010
intercostal space at the midclavicular line [MCL]), whereas the “small apical base” pattern
does not extend this far. Three patterns are confined entirely below this landmark (left
lower sternal pattern, broad apical pattern, and isolated apical pattern, 3rd through 5th
rows); 1 pattern is confined entirely above this landmark (isolated base pattern, bottom
row). The vertical line over the left chest in each drawing depicts the MCL.
dings increasing the probability of mitral irregular rhythm, and chaotic pulse rhythm (ie, atrial fibril-
Figure 1 The 6 murmur patterns are nd distinguished by their distribution with respect to
s 2.9-4.7) are a loud S2 at the left 2 lation). Findings supporting a diagnosis of significant tri-
a key landmark, the 3rd left parasternal interspace (indicated by “ϩ” on each drawing).
unchanging murmur intensity despite an small apical-base pattern, top 2 rows) extendare early systolic out-
Two patterns (broad apical-base pattern and
cuspid regurgitation (LRs 10.9-31.4)
above and below this landmark, usually to both sides of the sternum. The “broad apical-
th