<abstract xmlns="http://www.w3.org/1999/xhtml"><sec id="j_jhp00117_s_005_w2aab3b7c74b1b6b1aab1c14b1Aa"><h3>Background</h3><p>Scarcity of FVIII concentrate compels caregivers in poor countries to use multiple transfusions of fresh whole blood (FWB), fresh frozen plasma and cryoprecipitate for managing haemophilia A. FWB is the most frequently transfused blood product due to ease of production and its ability to simultaneously stop active bleeding and treat anaemia. Iron deficiency anaemia is common among haemophiliacs in poor tropical countries such as Nigeria, due to the combined effects of bleeding, malnutrition, and haemorrhagic parasitic diseases. Multiple FWB transfusion is usually initiated at local sub-tertiary hospitals before eventual referral to tertiary hospitals. The Nigerian blood transfusion service is underdeveloped, donor screening is rudimentary and transfusion safety is poor. The prevalence of transfusion transmissible viral infections (TTVIs), including HIV, and hepatitis B and C viruses (HBV and HCV), is therefore predicted to be high among Nigerian haemophiliacs.</p></sec><sec id="j_jhp00117_s_006_w2aab3b7c74b1b6b1aab1c14b2Aa"><h3>Aims</h3><p>To determine prevalence and pattern of TTVIs (HIV, HBV, HCV infections) among paediatric haemophiliacs who have received multiple FWB transfusions in Nigeria.</p></sec><sec id="j_jhp00117_s_007_w2aab3b7c74b1b6b1aab1c14b3Aa"><h3>Materials and methods</h3><p>Retrospective analyses of demographic and clinical data, disease severity, number of previous transfusions of FWB, and prevalence and pattern of TTVIs (HIV, HBV and HCV infections) of newly referred haemophiliacs as seen in five tertiary hospitals in northern Nigeria. Prevalence rates of TTVIs were expressed as percentages. Comparisons of parameters (age, disease severity and number of previous transfusions) between patients with and without TTVIs were performed using Students t-test for mean values and Fisher’s exact test for percentages, with p-values of less than 0.05 taken as significant.</p></sec><sec id="j_jhp00117_s_008_w2aab3b7c74b1b6b1aab1c14b4Aa"><h3>Results</h3><p>Of 97haemophiliacs studied, 24 (24.7%) were infected with TTVIs. The pattern and frequencies of TTVIs among the infected patients revealed HBV infection in 10 (41.7%), HIV-1 infection in five (20.8%), HCV infection in four (16.7%), HBV and HIV co-infection in three (12.5%), and HBV and HCV co-infection in two (8.3%). In comparison with haemophiliacs without TTVIs, haemophiliacs with TTVIs had a significantly lower mean age (4.9 vs. 7.8; p=0.007); a higher proportion of severe disease (62.5% vs. 26%; p=0.009), and a higher mean number of transfusions per patient (27.5 vs. 15.3; p=0.006).</p></sec><sec id="j_jhp00117_s_009_w2aab3b7c74b1b6b1aab1c14b5Aa"><h3>Conclusions</h3><p>The prevalence of TTVIs among haemophiliacs in Nigeria is high, and the risk is correlated with disease severity and number of previous transfusions. There is need for the national transfusion service to be upgraded and for standard haemophilia care centres with an adequate supply of FVIII concentrates for optimal care to be set up. Haemophilia healthcare providers in Nigeria can minimise multiple transfusions by incorporating regular screening and treatment of haemorrhagic parasitic diseases, iron supplementation, and the use of pharmacological agents in the standard of care for haemophilia.</p></sec></abstract>

BackgroundScarcity of FVIII concentrate compels caregivers in poor countries to use multiple transfusions of fresh whole blood (FWB), fresh frozen plasma and cryoprecipitate for managing haemophilia A. FWB is the most frequently transfused blood product due to ease of production and its ability to simultaneously stop active bleeding and treat anaemia. Iron deficiency anaemia is common among haemophiliacs in poor tropical countries such as Nigeria, due to the combined effects of bleeding, malnutrition, and haemorrhagic parasitic diseases. Multiple FWB transfusion is usually initiated at local sub-tertiary hospitals before eventual referral to tertiary hospitals. The Nigerian blood transfusion service is underdeveloped, donor screening is rudimentary and transfusion safety is poor. The prevalence of transfusion transmissible viral infections (TTVIs), including HIV, and hepatitis B and C viruses (HBV and HCV), is therefore predicted to be high among Nigerian haemophiliacs.AimsTo determine prevalence and pattern of TTVIs (HIV, HBV, HCV infections) among paediatric haemophiliacs who have received multiple FWB transfusions in Nigeria.Materials and methodsRetrospective analyses of demographic and clinical data, disease severity, number of previous transfusions of FWB, and prevalence and pattern of TTVIs (HIV, HBV and HCV infections) of newly referred haemophiliacs as seen in five tertiary hospitals in northern Nigeria. Prevalence rates of TTVIs were expressed as percentages. Comparisons of parameters (age, disease severity and number of previous transfusions) between patients with and without TTVIs were performed using Students t-test for mean values and Fisher’s exact test for percentages, with p-values of less than 0.05 taken as significant.ResultsOf 97haemophiliacs studied, 24 (24.7%) were infected with TTVIs. The pattern and frequencies of TTVIs among the infected patients revealed HBV infection in 10 (41.7%), HIV-1 infection in five (20.8%), HCV infection in four (16.7%), HBV and HIV co-infection in three (12.5%), and HBV and HCV co-infection in two (8.3%). In comparison with haemophiliacs without TTVIs, haemophiliacs with TTVIs had a significantly lower mean age (4.9 vs. 7.8; p=0.007); a higher proportion of severe disease (62.5% vs. 26%; p=0.009), and a higher mean number of transfusions per patient (27.5 vs. 15.3; p=0.006).ConclusionsThe prevalence of TTVIs among haemophiliacs in Nigeria is high, and the risk is correlated with disease severity and number of previous transfusions. There is need for the national transfusion service to be upgraded and for standard haemophilia care centres with an adequate supply of FVIII concentrates for optimal care to be set up. Haemophilia healthcare providers in Nigeria can minimise multiple transfusions by incorporating regular screening and treatment of haemorrhagic parasitic diseases, iron supplementation, and the use of pharmacological agents in the standard of care for haemophilia.

Prevalence, pattern and clinical implications of transfusion transmissible viral infections among paediatric haemophiliacs in northern Nigeria

The Journal of Haemophilia Practice

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

BackgroundScarcity of FVIII concentrate compels caregivers in poor countries to use multiple transfusions of fresh whole blood (FWB), fresh frozen plasma and...

TTVI	NUMBER OF PATIENTS INFECTED (%)
HBV	10 (41.7)
HIV-1	5 (20.8)
HCV	4 (16.7)
HBV and HIV-1	3 (12.5)
HBV and HCV	2 (8.3)
All infections	24 (100)

PARAMETERS	HAEMOPHILIACS WITHTTVIS (N=24)	HAEMOPHILIACSWITHOUT TTVIS (N=73)	P-VALUES
Age in years (mean ± SD)	4.9 ± 1.0	7.8 ± 1.6	p=0.007
Number of patients (%) with severe haemophilia	15 (62.5)	19 (26)	p=0.009
Number of previous transfusions per patient (mean ± SD)	27.5 ± 4.2	15.3± 3.5	p=0.006

Prevalence, pattern and clinical implications of transfusion transmissible viral infections among paediatric haemophiliacs in northern Nigeria

Article Category: Evidence Review

Data publikacji: 18 sty 2019

Zakres stron: 103 - 110

DOI: https://doi.org/10.17225/jhp00117

Słowa kluczowe
Haemophilia, Multiple transfusion, Nigeria, Transfusion transmissible infections, Tropical developing countries

© 2019 Sagir G. Ahmed, Umma A. Ibrahim, Modu B. Kagu published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Pattern and frequencies of infections among 24 paediatric haemophiliacs with transfusion transmissible viral infections (TTVIs)

Age, disease severity and number of previous transfusions among 97 haemophiliacs with and without transfusion transmissible viral infections (TTVIs)

Prevalence, pattern and clinical implications of transfusion transmissible viral infections among paediatric haemophiliacs in northern Nigeria

Article Category: Evidence Review

Data publikacji: 18 sty 2019

Zakres stron: 103 - 110

DOI: https://doi.org/10.17225/jhp00117

Słowa kluczoweHaemophilia, Multiple transfusion, Nigeria, Transfusion transmissible infections, Tropical developing countries

© 2019 Sagir G. Ahmed, Umma A. Ibrahim, Modu B. Kagu published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Pattern and frequencies of infections among 24 paediatric haemophiliacs with transfusion transmissible viral infections (TTVIs)

Age, disease severity and number of previous transfusions among 97 haemophiliacs with and without transfusion transmissible viral infections (TTVIs)

Słowa kluczowe
Haemophilia, Multiple transfusion, Nigeria, Transfusion transmissible infections, Tropical developing countries