FAILURE MAP
← Case archive

FA-64661 / Clinical triage scoring / Open access

Shock index, mean arterial pressure and flags: mean arterial pressure weighting · case 01

Mean arterial pressure is overstated for wide pulse pressures.

Verified by executionVariant 1 · 9 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

MAP is computed as the simple average of systolic and diastolic.

THE FAILURE

MAP is computed as the simple average of systolic and diastolic.

Unsuccessful approach: Weighting systolic twice inverts the stipulated weighting.

Case contract

Input {hr, sbp, dbp}. Invalid when sbp <= 0, dbp <= 0 or dbp >= sbp ({error INVALID_BP}). SI = hr/sbp; MAP = (sbp + 2*dbp)/3; modified SI = hr/MAP. Category: SI >= 1.0 SHOCK_LIKELY, SI >= 0.7 ELEVATED, else NORMAL. msi_flag when modified SI > 1.3; map_low when MAP < 65. SI and MAP are reported rounded half-up to 2 decimals. Return {si, map, category, msi_flag, map_low}.

Why this case matters

Ratio-based haemodynamic flags are sensitive to integer arithmetic, weighting of pressures and early rounding.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json
import math
from fractions import Fraction
N = 1
observations = []
def solve(x):
    def r2(v):
        return float(Fraction(math.floor(v * 100 + Fraction(1, 2)), 100))
    hr, sbp, dbp = x['hr'], x['sbp'], x['dbp']
    if sbp <= 0 or dbp <= 0 or dbp >= sbp:
        return {'error': 'INVALID_BP'}
    si = Fraction(hr, sbp)
    mp = Fraction(sbp + dbp, 2)
    msi = hr / mp
    cat = 'SHOCK_LIKELY' if si >= 1 else 'ELEVATED' if si * 10 >= 7 else 'NORMAL'
    return {'si': r2(si), 'map': r2(mp), 'category': cat, 'msi_flag': msi * 10 > 13, 'map_low': mp < 65}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('normal haemodynamics',
   {'hr': 71, 'sbp': 125, 'dbp': 80},
   {'si': 0.57, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 61},
   {'si': 0.69, 'map': 74.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 56},
   {'si': 0.7, 'map': 70.67, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 105, 'sbp': 105, 'dbp': 60},
   {'si': 1.0, 'map': 75.0, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 51},
   {'si': 0.6, 'map': 84.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 91},
   {'si': 0.67, 'map': 127.33, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 91, 'dbp': 91}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 81, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 51},
   {'si': 1.29, 'map': 62.33, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': True})],
 [('normal haemodynamics',
   {'hr': 72, 'sbp': 125, 'dbp': 80},
   {'si': 0.58, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 62},
   {'si': 0.69, 'map': 74.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 57},
   {'si': 0.7, 'map': 71.33, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 110, 'sbp': 110, 'dbp': 60},
   {'si': 1.0, 'map': 76.67, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 52},
   {'si': 0.6, 'map': 84.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 92},
   {'si': 0.67, 'map': 128.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 92, 'dbp': 92}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 82, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 52},
   {'si': 1.29, 'map': 63.0, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': True})],
 [('normal haemodynamics',
   {'hr': 73, 'sbp': 125, 'dbp': 80},
   {'si': 0.58, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 63},
   {'si': 0.69, 'map': 75.33, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 58},
   {'si': 0.7, 'map': 72.0, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 115, 'sbp': 115, 'dbp': 60},
   {'si': 1.0, 'map': 78.33, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 53},
   {'si': 0.6, 'map': 85.33, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 93},
   {'si': 0.67, 'map': 128.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 93, 'dbp': 93}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 83, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 53},
   {'si': 1.29, 'map': 63.67, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': True})],
 [('normal haemodynamics',
   {'hr': 74, 'sbp': 125, 'dbp': 80},
   {'si': 0.59, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 64},
   {'si': 0.69, 'map': 76.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 59},
   {'si': 0.7, 'map': 72.67, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 120, 'sbp': 120, 'dbp': 60},
   {'si': 1.0, 'map': 80.0, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 54},
   {'si': 0.6, 'map': 86.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 94},
   {'si': 0.67, 'map': 129.33, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 94, 'dbp': 94}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 84, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 54},
   {'si': 1.29, 'map': 64.33, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': True})],
 [('normal haemodynamics',
   {'hr': 75, 'sbp': 125, 'dbp': 80},
   {'si': 0.6, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 65},
   {'si': 0.69, 'map': 76.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 60},
   {'si': 0.7, 'map': 73.33, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 125, 'sbp': 125, 'dbp': 60},
   {'si': 1.0, 'map': 81.67, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 55},
   {'si': 0.6, 'map': 86.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 95},
   {'si': 0.67, 'map': 130.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 95, 'dbp': 95}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 85, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 55},
   {'si': 1.29, 'map': 65.0, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False})]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
normal haemodynamics{'category': 'NORMAL', 'map': 102.5, 'map_low': False, 'msi_flag': False, 'si': 0.57}{'category': 'NORMAL', 'map': 95.0, 'map_low': False, 'msi_flag': False, 'si': 0.57}Failed
shock index just under 0.7{'category': 'NORMAL', 'map': 80.5, 'map_low': False, 'msi_flag': False, 'si': 0.69}{'category': 'NORMAL', 'map': 74.0, 'map_low': False, 'msi_flag': False, 'si': 0.69}Failed
shock index exactly 0.7{'category': 'ELEVATED', 'map': 78.0, 'map_low': False, 'msi_flag': False, 'si': 0.7}{'category': 'ELEVATED', 'map': 70.67, 'map_low': False, 'msi_flag': False, 'si': 0.7}Failed
shock index exactly 1{'category': 'SHOCK_LIKELY', 'map': 82.5, 'map_low': False, 'msi_flag': False, 'si': 1.0}{'category': 'SHOCK_LIKELY', 'map': 75.0, 'map_low': False, 'msi_flag': True, 'si': 1.0}Failed
wide pulse pressure mean pressure{'category': 'NORMAL', 'map': 100.5, 'map_low': False, 'msi_flag': False, 'si': 0.6}{'category': 'NORMAL', 'map': 84.0, 'map_low': False, 'msi_flag': False, 'si': 0.6}Failed
half-hundredth shock index{'category': 'NORMAL', 'map': 145.5, 'map_low': False, 'msi_flag': False, 'si': 0.67}{'category': 'NORMAL', 'map': 127.33, 'map_low': False, 'msi_flag': False, 'si': 0.67}Failed
equal systolic and diastolic invalid{'error': 'INVALID_BP'}{'error': 'INVALID_BP'}Passed
zero diastolic invalid{'error': 'INVALID_BP'}{'error': 'INVALID_BP'}Passed
low mean pressure{'category': 'SHOCK_LIKELY', 'map': 68.0, 'map_low': False, 'msi_flag': True, 'si': 1.29}{'category': 'SHOCK_LIKELY', 'map': 62.33, 'map_low': True, 'msi_flag': True, 'si': 1.29}Failed

SHA-256 / a0ae5eb0e1ecb8fada448414ccf7ad572f6f75e9462be1b11585b0ffe69bd5d7

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json
import math
from fractions import Fraction
N = 1
observations = []
def solve(x):
    def r2(v):
        return float(Fraction(math.floor(v * 100 + Fraction(1, 2)), 100))
    hr, sbp, dbp = x['hr'], x['sbp'], x['dbp']
    if sbp <= 0 or dbp <= 0 or dbp >= sbp:
        return {'error': 'INVALID_BP'}
    si = Fraction(hr, sbp)
    mp = Fraction(2 * sbp + dbp, 3)
    msi = hr / mp
    cat = 'SHOCK_LIKELY' if si >= 1 else 'ELEVATED' if si * 10 >= 7 else 'NORMAL'
    return {'si': r2(si), 'map': r2(mp), 'category': cat, 'msi_flag': msi * 10 > 13, 'map_low': mp < 65}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('normal haemodynamics',
   {'hr': 71, 'sbp': 125, 'dbp': 80},
   {'si': 0.57, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 61},
   {'si': 0.69, 'map': 74.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 56},
   {'si': 0.7, 'map': 70.67, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 105, 'sbp': 105, 'dbp': 60},
   {'si': 1.0, 'map': 75.0, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 51},
   {'si': 0.6, 'map': 84.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 91},
   {'si': 0.67, 'map': 127.33, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 91, 'dbp': 91}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 81, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 51},
   {'si': 1.29, 'map': 62.33, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': True})],
 [('normal haemodynamics',
   {'hr': 72, 'sbp': 125, 'dbp': 80},
   {'si': 0.58, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 62},
   {'si': 0.69, 'map': 74.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 57},
   {'si': 0.7, 'map': 71.33, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 110, 'sbp': 110, 'dbp': 60},
   {'si': 1.0, 'map': 76.67, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 52},
   {'si': 0.6, 'map': 84.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 92},
   {'si': 0.67, 'map': 128.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 92, 'dbp': 92}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 82, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 52},
   {'si': 1.29, 'map': 63.0, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': True})],
 [('normal haemodynamics',
   {'hr': 73, 'sbp': 125, 'dbp': 80},
   {'si': 0.58, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 63},
   {'si': 0.69, 'map': 75.33, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 58},
   {'si': 0.7, 'map': 72.0, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 115, 'sbp': 115, 'dbp': 60},
   {'si': 1.0, 'map': 78.33, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 53},
   {'si': 0.6, 'map': 85.33, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 93},
   {'si': 0.67, 'map': 128.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 93, 'dbp': 93}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 83, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 53},
   {'si': 1.29, 'map': 63.67, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': True})],
 [('normal haemodynamics',
   {'hr': 74, 'sbp': 125, 'dbp': 80},
   {'si': 0.59, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 64},
   {'si': 0.69, 'map': 76.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 59},
   {'si': 0.7, 'map': 72.67, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 120, 'sbp': 120, 'dbp': 60},
   {'si': 1.0, 'map': 80.0, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 54},
   {'si': 0.6, 'map': 86.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 94},
   {'si': 0.67, 'map': 129.33, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 94, 'dbp': 94}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 84, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 54},
   {'si': 1.29, 'map': 64.33, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': True})],
 [('normal haemodynamics',
   {'hr': 75, 'sbp': 125, 'dbp': 80},
   {'si': 0.6, 'map': 95.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index just under 0.7',
   {'hr': 69, 'sbp': 100, 'dbp': 65},
   {'si': 0.69, 'map': 76.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 0.7',
   {'hr': 70, 'sbp': 100, 'dbp': 60},
   {'si': 0.7, 'map': 73.33, 'category': 'ELEVATED', 'msi_flag': False, 'map_low': False}),
  ('shock index exactly 1',
   {'hr': 125, 'sbp': 125, 'dbp': 60},
   {'si': 1.0, 'map': 81.67, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False}),
  ('wide pulse pressure mean pressure',
   {'hr': 90, 'sbp': 150, 'dbp': 55},
   {'si': 0.6, 'map': 86.67, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('half-hundredth shock index',
   {'hr': 133, 'sbp': 200, 'dbp': 95},
   {'si': 0.67, 'map': 130.0, 'category': 'NORMAL', 'msi_flag': False, 'map_low': False}),
  ('equal systolic and diastolic invalid', {'hr': 80, 'sbp': 95, 'dbp': 95}, {'error': 'INVALID_BP'}),
  ('zero diastolic invalid', {'hr': 85, 'sbp': 90, 'dbp': 0}, {'error': 'INVALID_BP'}),
  ('low mean pressure',
   {'hr': 110, 'sbp': 85, 'dbp': 55},
   {'si': 1.29, 'map': 65.0, 'category': 'SHOCK_LIKELY', 'msi_flag': True, 'map_low': False})]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
normal haemodynamics{'category': 'NORMAL', 'map': 110.0, 'map_low': False, 'msi_flag': False, 'si': 0.57}{'category': 'NORMAL', 'map': 95.0, 'map_low': False, 'msi_flag': False, 'si': 0.57}Failed
shock index just under 0.7{'category': 'NORMAL', 'map': 87.0, 'map_low': False, 'msi_flag': False, 'si': 0.69}{'category': 'NORMAL', 'map': 74.0, 'map_low': False, 'msi_flag': False, 'si': 0.69}Failed
shock index exactly 0.7{'category': 'ELEVATED', 'map': 85.33, 'map_low': False, 'msi_flag': False, 'si': 0.7}{'category': 'ELEVATED', 'map': 70.67, 'map_low': False, 'msi_flag': False, 'si': 0.7}Failed
shock index exactly 1{'category': 'SHOCK_LIKELY', 'map': 90.0, 'map_low': False, 'msi_flag': False, 'si': 1.0}{'category': 'SHOCK_LIKELY', 'map': 75.0, 'map_low': False, 'msi_flag': True, 'si': 1.0}Failed
wide pulse pressure mean pressure{'category': 'NORMAL', 'map': 117.0, 'map_low': False, 'msi_flag': False, 'si': 0.6}{'category': 'NORMAL', 'map': 84.0, 'map_low': False, 'msi_flag': False, 'si': 0.6}Failed
half-hundredth shock index{'category': 'NORMAL', 'map': 163.67, 'map_low': False, 'msi_flag': False, 'si': 0.67}{'category': 'NORMAL', 'map': 127.33, 'map_low': False, 'msi_flag': False, 'si': 0.67}Failed
equal systolic and diastolic invalid{'error': 'INVALID_BP'}{'error': 'INVALID_BP'}Passed
zero diastolic invalid{'error': 'INVALID_BP'}{'error': 'INVALID_BP'}Passed
low mean pressure{'category': 'SHOCK_LIKELY', 'map': 73.67, 'map_low': False, 'msi_flag': True, 'si': 1.29}{'category': 'SHOCK_LIKELY', 'map': 62.33, 'map_low': True, 'msi_flag': True, 'si': 1.29}Failed

SHA-256 / d2808db7c3378517bb5fa30471df80bbdb97204522ddd617edab46634eb07f58

HELD IN THE MEMBER ARCHIVE

The verified repair and its recorded checks are member-only.

This mechanism has 9 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

Every case sharing this mechanism uses the same contract and the same repair, so this one record is held back for all of them.

Member access is invitation-based. Sign in with your invited account to inspect the repair.

Sign in to the archive ↗

Verification & scope

A deterministic toy software model with explicitly stipulated thresholds and formulas; it is not clinical guidance, not a validated medical calculator, and makes no claim of conformance to any published protocol. Numbered variants vary patient and order inputs. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:47:26.752731+00:00.

Case digest / b33e6b44ca828f341cd1224c831ea636825d572cb2c3d3bf7b58a323b0a66374