Failure of anti-pneumococcal vaccine and prophylactic penicillin in a splenectomized patient

Effectiveness and immunogenicity of pneumococcal vaccination in splenectomized and functionally asplenic patients

The aim of the present study was to evaluate the effectiveness and immunogenicity of pneumococcal vaccination in 145 splenectomized and 2 functionally asplenic patients receiving the 23-valent pneumococcal polysaccharide vaccine and/or the 7-valent pneumococcal conjugate vaccine (PCV7) during the period 1996-2009. Progression of underlying malignant disease was the main cause of death in 68% of the 53 deceased patients, followed by septic shock in 13.2%. Twelve of 94 living patients developed post-vaccine complications: pneumonia in 9 patients, otitis media in 2, pneumococcal sepsis in 4. Compared with a non-splenectomized non-vaccinated control group (n=34), splenectomized patients vaccinated in the previous five years (n=15) had significantly higher GMCs (P<0.05) against serotypes 4, 6B, 9V, 14, 18C, 19F and 23F. Our data demonstrated strong serological responses in splenectomized patients within the first 5 years after pneumococcal vaccination by PCV7. Nevertheless, post-vaccine pneumococcal sepsis was still diagnosed in 3.3% of splenectomized survivors.

Review of guidelines for the prevention and treatment of infection in patients with an absent or dysfunctional spleen: prepared on behalf of the British Committee for Standards in Haematology by a working party of the Haemato-Oncology task force

Guidelines for the prevention and treatment of infection in patients with an absent or dysfunctional spleen were first published by the British Committee for Standards in Haematology (BCSH) in 1996 and formally reviewed in 2002. Although the guidelines originated from discussion within the BCSH, the intended readership is wide given the multidisciplinary nature of the management of hyposplenism.

Clinicopathological findings in fulminant-type pneumococcal infection: Report of three autopsy cases

Reported herein are three autopsy cases of fulminant-type pneumococcal sepsis with disseminated intravascular coagulation (DIC) resulting in death within a few days of onset of symptoms. Two of the three patients had previously had a splenectomy because of a hematological disorder. None of the patients had received pneumococcal vaccination. On post-mortem every organ had congestion as well as bleeding. Interestingly, severe inflammation of the alveoli was absent despite the sepsis. The cause of death was rapidly progressive pneumococcal sepsis leading to DIC and circulatory failure, which appeared to cause pulmonary congestion and hemorrhage without pneumonia. It is important to understand the pathogenesis of fulminant-type pneumococcal infection because it is life-threatening for compromised hosts.

An audit of splenectomies in a teaching hospital in North India. Are postsplenectomy guidelines being complied with?

AIMS

Patients with an absent or dysfunctional spleen are at risk of infection by encapsulated and other bacteria. Overwhelming postsplenectomy infection (OPSI) causes most concern because it can result in significant mortality. A retrospective review of splenectomised patients in a tertiary care setting over an eight year period was carried out to determine whether current postsplenectomy guidelines were being followed.

METHODS

The cases were identified from the medical records and pathology files and data such as the reason for splenectomy, the preventive measures taken regarding vaccination, and antibiotic prophylaxis, together with their documentation in the discharge notes were assessed.

RESULTS

Fifty six patients were studied. Trauma, both blunt and penetrating, was the most common reason for splenectomy. Thirty six patients received pneumococcal vaccination, with 20 patients having no mention of vaccination in their case notes. The discharge notes of 50 patients mentioned their splenectomised status; however, documentation of vaccination details in the discharge summary was poor, with only three patients having the relevant information recorded. Documentation of the need for future vaccination and precautions required in the asplenic condition was also lacking. Nine patients had postsplenectomy complications, although there were no cases of OPSI.

CONCLUSIONS

Adherence to standard guidelines for the management of splenectomised patients was unsatisfactory. There is a need for an improvement of the vaccination rate and careful documentation of this important health risk in the discharge summaries. Maintenance of a splenectomy registry could aid in optimising the management of these patients.

Pneumococcal vaccine administration associated with splenectomy: the need for improved education, documentation, and the use of a practical checklist

An audit was performed of the documentation of pneumococcal vaccination in splenectomy patients in three major hospitals involving a geographical population base of 350,000 patients in British Columbia, Canada. Overall, 111 of the 164 hospitalized splenectomy patients (68%) had received pneumococcal vaccination. Of elective splenectomy cases, only 11 of 55 (20%) had been vaccinated prior to surgery, as is currently recommended. One hundred fifty-five patients (95%) had splenectomy status mentioned in the discharge summary. However, only 35 (21%) had mention of vaccination status, 10 (6%) mention of the need for future revaccination, and only 8 (5%) notation of the possibility of future infectious risks. The rate of pneumococcal vaccination was as satisfactory as any reported in the literature to date. However, there is need for improved education in relation to the timing of vaccination and discharge summary documentation. A checklist for potential splenectomy patients may aid in improving this situation as may geographically based splenectomy registries.

[Median and long-term complications of splenectomy]

Splenectomy was one of the most common operations in abdominal surgery. During the past decade, an increased rate of late complications, especially septic and thromboembolic complications occurring after splenectomy, have been reported. The septic complications are well documented. The risk is related to the indication of splenectomy, and is less than 1% in adults without immunodeficiency. However, these overwhelming postsplenectomy infections are associated with a high mortality rate, about 50%. The best treatment of these infections is preventive measures which are based on vaccination and education of asplenic patients. The thromboembolic complications are rare, little studied, and specific preventive procedures have not been implemented.