Splenectomy Management Guidelines

Pre-Operative Considerations

The British Medical Association recommends that all patients undergoing splenectomy require comprehensive vaccination at least 2 weeks before elective surgery, lifelong antibiotic prophylaxis, and patient education about the lifelong risk of overwhelming post-splenectomy infection (OPSI) 1, 2, 3
Administer all vaccines at least 2 weeks before elective splenectomy to ensure optimal antibody response 4
For emergency splenectomy, vaccinate at least 2 weeks post-operatively once the patient stabilizes 3
Required vaccines include pneumococcal vaccines, meningococcal vaccines, and Haemophilus influenzae type b (Hib) vaccine for unvaccinated adults 5, 3

The American Academy of Pediatrics recommends annual influenza vaccination for all asplenic patients over 6 months of age, as it reduces mortality by 54% and prevents secondary bacterial infections 6
Use only inactivated influenza vaccine, never live attenuated (nasal spray) 6
The 23-valent pneumococcal vaccine is >90% effective in healthy adults under age 55 1, 4

Test for HCV and HIV in all ITP patients, as these can cause secondary ITP and influence management 7, 5
Screen for H. pylori and provide eradication therapy if positive before proceeding with splenectomy 5
Perform further investigations only if abnormalities exist beyond thrombocytopenia or iron deficiency findings 7, 5
Bone marrow examination is not necessary in patients with typical ITP presentation 7, 5

Offer lifelong prophylactic antibiotics to all patients, with highest priority in the first 2 years post-splenectomy 1, 4, 3
Phenoxymethylpenicillin (penicillin VK) is the standard prophylactic agent 1, 4, 3
For penicillin-allergic patients, prescribe erythromycin 1, 4
Provide emergency standby antibiotics (amoxicillin) for home use at first sign of fever, malaise, or chills 4, 3

Educate about lifelong infection risk: OPSI can occur more than 20 years after splenectomy 1, 4, 3
Instruct to seek immediate medical attention for fever >101°F (38°C) 5, 3
Issue Medic-Alert disc and post-splenectomy card indicating asplenic status 4, 5

Children under 5 years have infection rates >10%, compared to <1% in adults 2, 8
Infants are at highest risk 2, 8
Avoid splenectomy in children under 3-4 years if possible, as most serious infections occur in this age group 4

Streptococcus pneumoniae accounts for approximately 50% of OPSI cases 3
Other encapsulated bacteria include Neissococcus meningitidis and Haemophilus influenzae type b 2, 8

Patients with functional hyposplenism require identical preventive measures as those with surgical splenectomy 2, 8, 6
Detected on blood film by Howell-Jolly bodies and Heinz bodies 2, 8
Occurs in sickle cell disease (HbSS, HbSC), thalassemia major, coeliac disease, inflammatory bowel disease, and lymphoproliferative disorders 2, 8
Immunize as soon as diagnosis is made 4