dokumen.tips_hemoroid-ppt-56310637a5463.pptx

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  GyanAdytya20080310135   Plexus hemoroid merupakan pembuluh darah normal yang terletak pada mukosa rektum bagian distal dan anoderm.  Gangguan pada hemoroid terjadi ketika plexus vaskular ini membesar.  Hemoroid adalah kumpulan dari pelebaran satu segmen atau lebih vena hemoroidalis di daerah anorektal.   Penyebab hemoroid tidak diketahui pasti, konstipasi kronis dan mengejan saat defekasi penting dalam patofisiologi hemoroid.  Mengejan terus menerus  pembuluh darah hemoroidalis berdilatasi secara progresif +  jaringan sub mukosa kehilangan perlekatan normalnya dengan sfingter internal dibawahnya  prolaps hemoroid + berdarah.
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