泌尿器 / 救急
持続勃起症 — 管理パス
虚血型(疼痛・硬・アシドーシス血)は救急。海綿体吸引+フェニレフリン。
根拠:AUA / EAU。各ノードはガイドラインの判断ロジックを要約したものであり、原文の転載ではありません。 医療従事者向けの参考情報であり、臨床判断の代替ではありません。日本の関連学会指針および施設プロトコルを優先してください。
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ステップ 1 · Ischemic or non-ischemic
Ischemic or non-ischemic (blood gas/ultrasound)?
💡 Erection >4 h unrelated to sexual activity. Ischemic (low-flow/veno-occlusive, 98%, a penile compartment syndrome, painful + rigid corpora with a soft glans, hypoxic/hypercapnic/acidotic blood gas) = a true emergency; non-ischemic (high-flow/arterial, usually traumatic, painless, normal blood gas). Diagnosis: corporal blood gas + Doppler ultrasound to distinguish (ultrasound before aspiration). Time-sensitive: >24 h ~90% ED, >48 h near-irreversible fibrosis.
パス全体像
- 【判断】Ischemic or non-ischemicIschemic or non-ischemic (blood gas/ultrasound)?(Erection >4 h unrelated to sexual activity. Ischemic (low-flow/veno-occlusive, 98%, a penile compartment syndrome, painful + rigid corpora with a soft glans, hypoxic/hypercapnic/acidotic blood gas) = a true emergency; non-ischemic (high-flow/arterial, usually traumatic, painless, normal blood gas). Diagnosis: corporal blood gas + Doppler ultrasound to distinguish (ultrasound before aspiration). Time-sensitive: >24 h ~90% ED, >48 h near-irreversible fibrosis.)
- Ischemic (painful/rigid, hypoxic acidotic blood gas) → Ischemic → aspiration + phenylephrine
- Non-ischemic (painless, arterial blood gas) → Non-ischemic · not an emergency
- 【終点】Non-ischemic · not an emergencyNon-ischemic (high-flow/動脈, usually perineal/penile 外傷, painless, normal 血ガス): not an emergency — observation (often resolves spontaneously), s待機的 internal pudendal artery 塞栓術の場合needed; aspiration isに対しdiagnosis only, sympathomimetic injection is not 推奨.
- 【終点】Ischemic → aspiration + phenylephrineIschemic (emergency, 可及的速やかに): dorsal penile nerve blockに対し鎮痛, treat the cause (sickle cell → hydration/exchange transfusion, but do not rely on systemic treatment alone); 第一選択: corporal aspiration ± saline irrigation + intracorporal phenylephrine (the 優先 alpha-agonist, 100–500 mcg repeated every 3–5 minutes, 〜あり ECG monitoring); failure → surgical shunt; >48–72 h/難治 → 検討 early penile prosthesis.
よくある質問
- 持続勃起症 — 管理パスはどの臨床課題を扱う診療パスですか?
- 虚血型(疼痛・硬・アシドーシス血)は救急。海綿体吸引+フェニレフリン。
- 持続勃起症 — 管理パスの主要な意思決定ステップは何ですか?
- Ischemic or non-ischemic
- 持続勃起症 — 管理パスはどのような対応方針を示しますか?
- Non-ischemic · not an emergency:Non-ischemic (high-flow/動脈, usually perineal/penile 外傷, painless, normal 血ガス): not an emergency — observation (often resolves spontaneously), s待機的 internal pudendal artery 塞栓術の場合needed; aspiration isに対しdiagnosis only, sympathomimetic injection is not 推奨.;Ischemic → aspiration + phenylephrine:Ischemic (emergency, 可及的速やかに): dorsal penile nerve blockに対し鎮痛, treat the cause (sickle cell → hydration/exchange transfusion, but do not rely on systemic treatment alone); 第一選択: corporal aspiration ± saline irrigation + intracorporal phenylephrine (the 優先 alpha-agonist, 100–500 mcg repeated every 3–5 minutes, 〜あり ECG monitoring); failure → surgical shunt; >48–72 h/難治 → 検討…
- 持続勃起症 — 管理パスのうち直ちに対応が必要な状況はどれですか?
- Ischemic → aspiration + phenylephrine:Ischemic (emergency, 可及的速やかに): dorsal penile nerve blockに対し鎮痛, treat the cause (sickle cell → hydration/exchange transfusion, but do not rely on systemic treatment alone); 第一選択: corporal aspiration ± saline irrigation + intracorporal phenylephrine (the 優先 alpha-agonist, 100–500 mcg repeated every 3–5 minutes, 〜あり ECG monitoring); failure → surgical shunt; >48–72 h/難治 → 検討 early penile prosthesis.
- 持続勃起症 — 管理パスはどのガイドラインに基づいていますか?
- Priapism (AUA/SMSNA guideline; EAU; Merck Manual) · 準拠:AUA / EAU
出典
- Priapism (AUA/SMSNA guideline; EAU; Merck Manual)