PPhantomAI

Mrs. A.B

PID-20140

74 yrs · Female · 68 kg · 160 cm · Medical Ward B

Diagnosis
Atrial fibrillation, urinary tract infection (new)
Vitals
BP138/82 mmHgElevatedBlood PressureReference90–120 / 60–80 mmHgActual138/82 mmHg
HR76 bpmNormalHeart RateReference60–100 bpmActual76 bpm
RR16/minNormalRespiratory RateReference12–20 breaths/minActual16/min
TEMP37.8°CElevatedTemperatureReference36.1–37.2°CActual37.8°C
SPO297%NormalOxygen SaturationReference≥ 95%Actual97%
Labs
Serum Creatinine1.3 mg/dLNormalSerum CreatinineReference0.5–1.3 mg/dLActual1.3 mg/dL
Creatinine Clearance42 mL/minModerateCreatinine ClearanceReference≥ 50 mL/min (normal/mild impairment)Actual42 mL/min
eGFR45 mL/min/1.73m²ModerateeGFRReference≥ 60 mL/min/1.73m²Actual45 mL/min/1.73m²
Liver FunctionWithin normal limitsNormalLiver FunctionReferenceWithin normal limitsActualWithin normal limits
Blood Glucose5.6 mmol/LNormalBlood GlucoseReference4.0–7.8 mmol/LActual5.6 mmol/L
INR2.4 (baseline, therapeutic)NormalINRReference2.0–3.0 (therapeutic range on warfarin)Actual2.4 (baseline, therapeutic)
Allergies & Status
No known drug allergies (NKDA)
Not applicable
Clinical Notes
Patient presents with dysuria and urgency. Urinalysis positive for nitrites and leukocytes. Started empirically on ciprofloxacin by the covering physician before pharmacy review.

Current Medications

  • Warfarin 5 mg once daily
  • Bisoprolol 5 mg once daily
  • Amlodipine 5 mg once daily

New Prescriptions — Pending Dispense

Ciprofloxacin 500 mg
Oral, Twice daily for 7 days
Unit: 88 Central: 420 Auto-Reorder Triggered
Nifedipine 200mg
Oral, Once daily
Unit: 95 Central: 380 Auto-Reorder Triggered
IV Cannula 20GConsumable
For antibiotic administration
Normal Saline 1LConsumable
IV, As required
Recommended Additions

These aren't on the prescription, but this chart implies they'll be needed to actually administer it.

IV Giving Set

An IV cannula has been prescribed — a giving set is needed to actually administer fluids or medications through it. Needed to administer Normal Saline as an IV infusion.

Clinical AI Analysis
0%Risk Score
0%AI Confidence
HighPriority Level

Medication Interactions

Warfarin + CiprofloxacinMajor

Ciprofloxacin inhibits CYP1A2 and displaces warfarin from plasma proteins, significantly increasing INR and bleeding risk. Onset typically within 3-5 days.

→ Avoid combination if an alternative exists. If ciprofloxacin is clinically necessary, reduce warfarin dose empirically (~25-30%) and monitor INR closely.

Alternatives for Ciprofloxacin
Nitrofurantoin 100mg — Oral, Twice daily for 5 days
Minimal interaction with warfarin; appropriate for uncomplicated UTI if CrCl ≥30 mL/min.
Fosfomycin 3g — Oral, Single dose
No significant warfarin interaction; simple single-dose regimen.

Alternatives

Nitrofurantoin 100 mg twice daily for 5 days (minimal interaction with warfarin, appropriate for uncomplicated UTI, but caution if CrCl < 30 mL/min — this patient's CrCl of 42 mL/min is acceptable)
Fosfomycin 3 g single dose (no significant warfarin interaction)

Counselling Points

Report any unusual bruising or bleeding immediately
Complete the full antibiotic course even if symptoms improve
Keep the INR recheck appointment — do not skip it
Consult Prescriber

The warfarin-ciprofloxacin interaction is well-documented and carries a major bleeding risk in an elderly patient already at baseline therapeutic INR. A safer first-line agent (nitrofurantoin or fosfomycin) should be discussed with the prescriber before dispensing.

Duplicate Prescription Check

Amlodipine 5 mg once daily — Same therapeutic class as Nifedipine 200mg (Calcium channel blocker)

Dose Accuracy Check

Ciprofloxacin 500 mg — Within the typical adult range of 250-750mg per dose.
Nifedipine 200mg — 200mg exceeds the typical single-dose maximum of 90mg.

Interaction Cross-Check

Every unique pair across current medications and new prescriptions — not just new-vs-current.

Warfarin + CiprofloxacinNew RxMajor
Alternatives for Ciprofloxacin
Nitrofurantoin 100mg — Oral, Twice daily for 5 days
Minimal interaction with warfarin; appropriate for uncomplicated UTI if CrCl ≥30 mL/min.
Fosfomycin 3g — Oral, Single dose
No significant warfarin interaction; simple single-dose regimen.
Amlodipine + NifedipineNew RxModerate
Alternatives for Nifedipine
Losartan 50mg — Oral, Once daily
Avoids duplicating a calcium channel blocker already on the chart (Amlodipine).
Warfarin + BisoprololLow
Warfarin + AmlodipineLow
Warfarin + NifedipineNew RxLow
Bisoprolol + AmlodipineLow
Bisoprolol + CiprofloxacinNew RxLow
Bisoprolol + NifedipineNew RxLow
Amlodipine + CiprofloxacinNew RxLow
Ciprofloxacin + NifedipineNew RxLow

Renal Function & Dosing

42ModerateCreatinine ClearanceReference≥ 50 mL/min (normal/mild impairment)Actual42mL/min
Cockcroft-Gault recalculation: 40.8 mL/min
Moderate Impairment

No medications on this chart require renal dose banding from the reference table.

Pharmacovigilance — Relevant to This Patient

Warfarin — Bruising4 hours ago

Acid-Base Disturbance Profile

Low
pH
7.47HighpHReference7.35–7.45Actual7.47
pCO₂
32 mmHgLowpCO₂Reference35–45 mmHgActual32 mmHg
HCO₃⁻
23 mEq/LNormalHCO₃⁻Reference22–26 mEq/LActual23 mEq/L
Lactate
1.1 mmol/LNormalLactateReference< 2 mmol/LActual1.1 mmol/L
Respiratory AlkalosisUncompensated (likely acute)

Low pCO2 (hyperventilation) is driving the alkalemia; a lowered bicarbonate alongside it would indicate the kidneys have started excreting bicarbonate to compensate.

→ Drawn on admission with fever and mild tachypnoea from the UTI.

How This Affects the Treatment Plan — Suggested Interventions

If this reflects a known physiological state (e.g. pregnancy) rather than acute illness, no intervention is needed beyond documenting it as this patient's baseline.
If acute and symptomatic (light-headedness, paraesthesia), consider anxiety, pain, hypoxia, or sepsis as drivers rather than treating the gas result directly.

Theatre

No theatre procedure currently scheduled for this patient.

Unit vs Central Stock — This Patient's Medications

AMC, ROL, and months-of-stock (MOS) at both the unit and central store, with a recommendation for each.

Warfarin
Unit StockBelow Reorder Level
310
Stock
390
AMC
0.8
MOS

Order 590 units to reach max stock level before it runs out (~0.8 months of stock remain).

Central StoreAdequate
640
Stock
1100
AMC
0.6
MOS

Stock within normal range (~0.6 months of stock) — no action needed.

Send Requisition to Bulk Store
Bisoprolol
Unit StockAdequate
520
Stock
310
AMC
1.7
MOS

Stock within normal range (~1.7 months of stock) — no action needed.

Central StoreAdequate
2400
Stock
1900
AMC
1.3
MOS

Stock within normal range (~1.3 months of stock) — no action needed.

Amlodipine
Unit StockAdequate
610
Stock
365
AMC
1.7
MOS

Stock within normal range (~1.7 months of stock) — no action needed.

Central StoreAdequate
3100
Stock
2200
AMC
1.4
MOS

Stock within normal range (~1.4 months of stock) — no action needed.

Ciprofloxacin
Unit StockBelow Reorder Level
88
Stock
150
AMC
0.6
MOS

Order 312 units to reach max stock level before it runs out (~0.6 months of stock remain).

Central StoreBelow Reorder Level
420
Stock
890
AMC
0.5
MOS

Order 1980 units to reach max stock level before it runs out (~0.5 months of stock remain).

Send Requisition to Bulk Store
Nifedipine
Unit StockBelow Reorder Level
95
Stock
110
AMC
0.9
MOS

Order 205 units to reach max stock level before it runs out (~0.9 months of stock remain).

Central StoreBelow Reorder Level
380
Stock
650
AMC
0.6
MOS

Order 1220 units to reach max stock level before it runs out (~0.6 months of stock remain).

Send Requisition to Bulk Store