Department of Regenerative Dermatology and Department of Traumatology and Acute Critical Medicine, Osaka University School of Medicine 2-2, G2, Yamadaoka, Suita-shi, Osaka 5650871, Japan.
Int J Dermatol. 2011 Aug;50(8):945-7. doi: 10.1111/j.1365-4632.2010.04784.x.
To assess dermoscopic findings of "non-blanchable erythema" in stage I pressure ulcers and to determine their characteristics.
Dermoscopic examinations using DermLite(®) II pro of redness over a bony prominence that did not resolve within 30min of pressure relief or if a positional change was impossible for three days.
Characteristic dermoscopic findings of redness in stage I pressure ulcers included petechial dots and telangiectatic streaks while other discolorations disappeared by diascopy. These dermoscopic features were seen in 9 of 10 cases. In one case, purpura that persisted under dermoscope compression was observed. Likewise, petechial dots and telangiectatic streaks were detected in three cases with redness surrounding stage II pressure ulcers.
The "non-blanchable erythema" in pressure ulcers consists of petechial dots, telangiectatic streaks and purpura that persist after compression by the dermoscope and these characteristics are helpful for dermoscopically diagnosing pressure ulcers.
评估 I 期压疮“不可褪色红斑”的皮肤镜表现，并确定其特征。
使用 DermLite ® II pro 在骨隆突处进行皮肤镜检查，如果红斑在解除压力后 30 分钟内不消退，或者如果在三天内无法改变体位，则进行皮肤镜检查。
I 期压疮红色的特征性皮肤镜表现包括瘀点和扩张的血丝，而其他变色在透照下消失。这一皮肤镜特征在 10 例中观察到 9 例。在 1 例中，观察到在皮肤镜压迫下持续存在的瘀斑。同样，在 3 例伴有 II 期压疮周围红斑的病例中，也检测到瘀点和扩张的血丝。
压疮的“不可褪色红斑”由瘀点、扩张的血丝和皮肤镜压迫后仍持续存在的瘀斑组成，这些特征有助于压疮的皮肤镜诊断。
