Febrile neutropenia with septic shock on day 9 of R-CHOP in a patient with a central venous port
A 64-year-old woman with diffuse large B-cell lymphoma, day 9 after her first R-CHOP with pegfilgrastim given on day 2, presents with 12 hours of fever up to 38.9 °C. Blood pressure is 88/52 mmHg after 1 L of crystalloid, pulse 124/min, respiratory rate 26/min, SpO₂ 94% on air, lactate 3.4 mmol/L. Absolute neutrophil count is 0.2 × 10⁹/L, platelets 45 × 10⁹/L, creatinine 1.6 mg/dL (baseline 0.8), bilirubin 1.1 mg/dL, CRP 210 mg/L. She has a Port-a-Cath inserted three weeks ago, is on no antimicrobial prophylaxis, and has no prior fungal infection or COPD. Two sets of blood cultures, urine culture and a chest radiograph have been sent; she has no diarrhoea and no obvious skin source. She is drowsy but orientated.
1. What empirical antibiotic regimen would you start, how quickly, and is an additional agent - vancomycin, an antifungal, or both - justified at this point?
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Start an antipseudomonal beta-lactam within 60 minutes of recognition, immediately after cultures are drawn - do not wait for results.
Regimen: piperacillin-tazobactam 4.5 g every 6 hours by extended infusion, or cefepime 2 g every 8 hours; in a patient with shock and possible ESBL colonisation, meropenem 1 g every 8 hours is a reasonable alternative. Doses must be adjusted for creatinine clearance and re-escalated as renal function recovers.
Vancomycin - yes. The usual rule is that glycopeptides are not added routinely to empirical therapy; they are indicated for suspected catheter-related infection, skin or soft tissue infection, pneumonia, MRSA colonisation, or haemodynamic instability. She has shock plus an indwelling port, which satisfies two of these. Give a weight-based loading dose and monitor renal function; plan to stop at 48–72 hours if MRSA is not isolated and cultures are negative.
Antifungal - no, not at hour zero. Empirical antifungal therapy is reserved for persistent fever after 4–7 days of appropriate antibiotics in high-risk prolonged neutropenia, or for strong clinical/microbiological evidence of invasive fungal disease. Starting it now adds toxicity and cost without benefit.
Also do now: full sepsis bundle - repeat lactate, fluids, norepinephrine targeting MAP ≥65 mmHg, ICU referral, cultures from the port and a peripheral vein, and consideration of imaging for a source. Empirical antiviral or antituberculous therapy is not indicated.
2. Calculate her MASCC score and explain what management decisions follow from the risk category.
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MASCC scoring (maximum 26; ≥21 = low risk):
- Burden of illness: moderate symptoms - 3 points (not 5, because she is symptomatic and in bed; not 0, because she is not moribund)
- Hypotension: 0 points (systolic <90 mmHg removes the 5 points)
- No COPD: 4 points
- Haematological malignancy, not a solid tumour: 0 points
- Not an outpatient at presentation: 0 points
- Age ≥60 years: 0 points
Total ≈ 7 - high risk (<21).
What follows:
- Admission to a monitored bed and intravenous antibiotics with a minimum 5–7 day course, not oral or outpatient therapy; the outpatient algorithm is invalid in shock.
- Early ICU involvement and organ support; serial lactate and urine output.
- Therapeutic G-CSF may be considered here because she has high-risk features (hypotension, age approaching 65, sepsis); it is not routine for every febrile neutropenia episode and does not replace antibiotics.
- Avoid rectal temperatures, suppositories and rectal manipulation given platelets of 45 × 10⁹/L; avoid intramuscular injections.
- Reassess at 48–72 hours: if afebrile with negative cultures, de-escalate; if still febrile, re-image, repeat cultures, and consider adding antifungal coverage.
3. On day 4 she is still febrile. Blood cultures from one lumen grow coagulase-negative Staphylococcus, and CT shows thrombus in the right internal jugular vein. What is the plan?
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This is catheter-related bloodstream infection with septic thrombophlebitis - the catheter must go.
Reasoning: coagulase-negative Staphylococcus from a lumen in a patient with an indwelling port, persistent fever and a documented jugular thrombus is not a contaminant until proven otherwise. Failure to remove an infected device in this setting is the commonest reason for persistent bacteraemia and relapse.
Plan:
- Remove the Port-a-Cath, ideally after a fresh set of cultures, and send the catheter tip for culture.
- Continue targeted intravenous therapy. For coagulase-negative Staphylococcus, vancomycin (AUC-guided or trough 15–20 mg/L) or, if the isolate is methicillin-susceptible, flucloxacillin is preferred. Duration is 4–6 weeks for septic thrombophlebitis with bacteraemia, longer than the 5–7 days used for uncomplicated catheter-related infection.
- Anticoagulate with low molecular weight heparin if the thrombus is extensive, propagating, or symptomatic, after weighing platelets and bleeding risk; involve haematology.
- Exclude metastatic foci: repeat blood cultures after removal, echocardiography if bacteraemia persists or a murmur appears, and imaging of any new pain.
- Reassess the antibiotics once the organism's susceptibility is known; do not continue empirical vancomycin blindly if a narrower agent is available.
- Future access: the next chemotherapy cycle needs a plan - a new device only after repeat cultures are negative and the thrombus has been addressed.