ASUS-UHNM Calculator

Hospital No.

Clinician Initials

Referral Date / Time (auto)

Physiological Instability (NEWS2)

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NEWS2 0–4 0 NEWS2 5–6 +3 NEWS2 ≥ 7 +6

Pain & Peritonism

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Mild / moderate pain 0 Severe pain requiring opiates +2 PeritonismRigidity, rebound, guarding +6

GI Red Flags

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Scoring: None = 0 | One = +2 | Two or more = +5

None

Fresh PR bleeding with instability

Bilious or feculent vomiting

Suspected bowel obstruction

Suspected bowel ischaemia

Strangulated abdominal wall hernia

Severe sepsis of abdominal origin

Severe pancreatitis with organ dysfunction

Blood Test Abnormalities

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Mild / Normal 0 Moderate derangementCRP 100–150, WCC 12–15, lactate 2–4, AKI 1 +2 Severe derangementCRP >150, WCC >15, lactate >4, metabolic acidosis, AKI ≥2, Hb drop >20 g/L +5

Imaging Findings

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Definite Surgical Pathology (+8)

Definite surgical pathologyFree air, perforation, closed-loop obstruction, transition point, bowel ischaemia, abscess >3cm, volvulus, strangulated hernia, perforated appendicitis/diverticulitis, severe pancreatitis with necrosis, ischaemic colitis with systemic compromise +8

Minor Surgical Pathology (+3)

Minor / possible surgical pathologyEarly appendicitis, early cholecystitis, uncomplicated diverticulitis, mild SBO without transition, localised free fluid, fat stranding, abscess <3cm, mild pancreatitis +3

Medical Pathology (−3)

Medical pathology / normalInfective colitis, IBD flare, gastroenteritis, uncomplicated gallstones, constipation without obstruction, UTI/pyelonephritis, pneumonia causing abdominal pain −3

Imaging Not Yet Available

Imaging pending / not done 0

Frailty (CFS)

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CFS 1–3 0 CFS 4–5 +1 CFS ≥ 6 +2

Clinician Concern Override

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“Are you worried about this patient?”

Yes Triggers mandatory P1 IMMEDIATE regardless of score P1 No Score determined by inputs above —

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Score will appear here

ASUS-UHNM Calculator

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