Urology
Priapism
Persistent painful erection >4h — distinguish ischaemic (low-flow, emergency) vs non-ischaemic.
Source: BAUS; AUA
Step 1 of ~2
info
Distinguish Types
Priapism: persistent erection >4h not relieved by ejaculation.
Ischaemic (low-flow) — EMERGENCY:
• Painful, rigid corpora.
• Causes: sickle cell, drugs (PDE5i, antipsychotics, antidepressants, intracavernosal injections), cocaine, leukaemia, multiple myeloma, idiopathic.
• Permanent ED if >24h.
Non-ischaemic (high-flow):
• Less painful, partial / not fully rigid.
• Trauma → arterio-cavernosal fistula.
• Less urgent; conservative often successful.
Distinguish: cavernosal blood gas — ischaemic acidotic dark venous (pH <7.25, PO₂ <30, PCO₂ >60); non-ischaemic similar to arterial.
Related
Curated clinical cross-links plus same-class fallbacks.
Drugs
- Labetalol (IV — Hypertensive Emergency) · Combined Alpha-1 and Beta-Adrenergic Blocker
- Labetalol (IV — Hypertensive Emergency) · Combined alpha and beta blocker
- Aspirin (Loading Dose) · Antiplatelet — ACS / Ischaemic Stroke
- Alteplase (tPA) · Thrombolytic — Ischaemic Stroke / Massive PE
- Tenecteplase · Cardiovascular Emergency
- Tirofiban · Cardiovascular Emergency
Decision support only. Always apply local guidelines and clinical judgement.