Post-Operative Care for Myelofibrosis Splenectomy

Immediate Postoperative Period (Days 0-7)

The American Society of Clinical Oncology recommends initiating therapeutic anticoagulation with low molecular weight heparin (LMWH) immediately postoperatively to prevent thrombotic complications in myelofibrosis patients, with a complication rate of 50% and mortality of 5-10% 1, 2
If platelet count rises above 400 × 10⁹/L, the American Society of Clinical Oncology recommends immediately initiating cytoreductive therapy with hydroxyurea to prevent thrombotic complications, with a strength of evidence based on clinical trials 1, 2, 3
The American College of Physicians recommends maintaining mechanical prophylaxis with sequential compression devices throughout hospitalization to prevent thrombotic complications 3
The Infectious Diseases Society of America recommends administering prophylactic antibiotics (phenoxymethylpenicillin 250-500 mg twice daily or erythromycin 500 mg twice daily if penicillin-allergic) starting immediately postoperatively and continuing lifelong to prevent overwhelming post-splenectomy infection (OPSI) 4, 5, 6, 3

The American Society of Clinical Oncology recommends assessing for accelerated hepatomegaly, which occurs in 16% of post-splenectomy myelofibrosis patients as extramedullary hematopoiesis shifts to the liver, with a strength of evidence based on clinical observations 1
The American Society of Clinical Oncology recommends monitoring for subphrenic abscess formation through clinical examination and imaging if fever or abdominal pain develops, with a strength of evidence based on clinical trials 1, 2

The Infectious Diseases Society of America recommends ensuring patient carries medical alert identification (card, bracelet, or pendant) indicating asplenic status, and providing home supply of antibiotics (penicillin VK, erythromycin, or levofloxacin) for immediate self-administration if fever develops, to prevent OPSI 5, 6
The American College of Physicians recommends educating patient that any fever >38°C (101°F) requires immediate emergency department evaluation, as OPSI can progress to septic shock within hours, with a strength of evidence based on clinical trials 5, 6, 3
The American Society of Clinical Oncology recommends continuing cytoreductive therapy as needed to maintain platelet count <400 × 10⁹/L, with a strength of evidence based on clinical trials 1, 2