Journal of Neurogastroenterology and Motility : eISSN 2093-0887 / pISSN 2093-0879

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Fig. 2. Types of pelvic floor dyssynergia seen with high-resolution anorectal manometry. (A) Type I dyssynergia: an adequate increase in rectal pressure (≥ 40 mmHg) accompanied by a paradoxical simultaneous increase in anal pressure. (B) Type II dyssynergia: an inadequate increase in rectal pressure (< 40 mmHg; poor propulsive force) accompanied by a paradoxical simultaneous increase in anal pressure. (C) Type III dyssynergia: an adequate increase in rectal pressure (≥ 40 mmHg) accompanied by a failed reduction in anal pressure (≤ 20% baseline pressure). (D) Type IV dyssynergia: an inadequate increase in rectal pressure of (< 40 mmHg; poor propulsive force) accompanied by a failed reduction in anal pressure (≤ 20% baseline pressure).
J Neurogastroenterol Motil 2016;22:46~59 https://doi.org/10.5056/jnm15168
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