病窦综合征也可能由窦房结附近的瘢痕组织引起，后者会减慢、干扰、或是阻断电冲动的传导。
Sick sinus can also be caused by scarring near the sinus node that's slowing, disrupting or blocking the travel of impulses.
窦房结的心肌细胞：这张图显示了窦房结的切面，右心房的一块起搏区。
Cardiomyocytes in the sinoatrial node This image shows a section of the sinoatrial node, a pacemaking area of the right atrium of the heart.
结论用甲醛湿敷法损伤窦房结组织不仅导致窦房结细胞不可逆性损伤，而且可诱发窦房结细胞凋亡。
Conclusion Formaldehyde wet dressing method can not only lead to irreversible damage of the SAN cells but evoke the apoptosis of SAN cells as well.
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