Blood transfusion is fundamental in managing hematologic malignancies. We sought to evaluate the need and availability of blood products for patients with hematological malignancies at Uganda Cancer ...Institute. We prospectively studied the demand and supply of blood for patients with thrombocytopenia (platelet count ≤50 × 10
/L), anemia (hemoglobin ≤10 g/dL), and bleeding (WHO grade ≥2). We used Poisson generalized estimating equation regression models for longitudinal binary outcomes. Among 91 patients, the median age was 26 years (IQR, 11-47). Thrombocytopenia occurred on ≥1 day in 58% of patients and on 49% of hospital days. Platelets were transfused to 39% of patients. The mean number of platelet units requested per day was 16.2 (range 0-30); 5.1 (range 0-15) were received. Anemia occurred on ≥1 day in 90% of patients; on 78% of days; and 68% received at least one blood transfusion. The mean number of blood units requested was 36.3 (range 8-57) units per day; 14 (range 0-30) were received. Bleeding occurred on ≥1 day in 19% of patients on 8% of hospital days. Thrombocytopenia and anemia were common, but product availability was substantially below that requested. We recommend increased blood collection and adherence to strict transfusion triggers as strategies to improve blood availability.
Background. Accurate placement of pedicle screws in the subaxial cervical spine requires precise understanding of vertebra anatomy. Little is known about the morphometric characteristics of the ...subaxial cervical pedicle in the Ugandan population. The objective of the study was to determine the morphometric dimensions of pedicles in the subaxial cervical spine among the adult Ugandan population. Methods. We conducted a cross-sectional study from March to November 2019 among adult Ugandans with a normal cervical CT scan at Nsambya hospital in Kampala. Eligible participants were consecutively recruited into the study. Data on baseline characteristics and pedicle dimensions from the CT scan finding was collected using a structured questionnaire. Data was analysed using Stata 13.0. Pedicle dimensions for the different levels of subaxial cervical vertebrae were summarised as means and standard deviations, the Mann–Whitney test was used to compare pedicle dimensions for the different vertebra levels among females and males on both right and left sides, and the level of significance was set at 0.05. Results. A total of 700 subaxial cervical pedicles (C3-C7) from 49 males and 21 female participants were studied. Pedicle width diameter showed cephalocaudal gradual increment from C3 1.65(0.63) mm to 3.46(0.75) mm at C7. Pedicle height also showed an increase caudally with smallest diameter at C3 (1.98(0.76) mm) and largest at C5 in females (3.67(6.42) mm) and at C7 in males (3.83(0.76) mm). The pedicle height was wider than the pedicle width at all levels. The pedicle chord length gradually increased caudally in both sexes ranging from 29.08(1.35) mm at C3 to 32.53(3.19) mm at C7. The axial angles were oriented medially and showed no consistent trend ranging between 50° and 53°. The sagittal angles decreased as one moved from C3 to C7. The dimensions of females were significantly smaller than in males. Conclusion. Pedicle endosteal width was smaller than pedicle height dimensions at all levels. Pedicle cord length increased caudally. The pedicle dimensions, except angulations, were smaller in females than in males.
Despite the importance of platelet transfusions in treatment of hematologic cancer patients, the optimal platelet count threshold for prophylactic transfusion is unknown in sub-Saharan Africa.
We ...followed patients admitted to the Uganda Cancer Institute with a hematological malignancy in 3 sequential 4-month time-periods using incrementally lower thresholds for prophylactic platelet transfusion: platelet counts ≤ 30 x 109/L in period 1, ≤ 20 x 109/L in period 2, and ≤ 10 x 109/L in period 3. Clinically significant bleeding was defined as WHO grade ≥ 2 bleeding. We used generalized estimating equations (GEE) to compare the frequency of clinically significant bleeding and platelet transfusions by study period, adjusting for age, sex, cancer type, chemotherapy, baseline platelet count, and baseline hemoglobin.
Overall, 188 patients were enrolled. The median age was 22 years (range 1-80). Platelet transfusions were given to 42% of patients in period 1, 55% in period 2, and 45% in period 3. These transfusions occurred on 8% of days in period 1, 12% in period 2, and 8% in period 3. In adjusted models, period 3 had significantly fewer transfusions than period 1 (RR = 0.6, 95% CI 0.4-0.9; p = 0.01) and period 2 (RR = 0.5, 95% CI 0.4-0.7; p<0.001). Eighteen patients (30%) had clinically significant bleeding on at least one day in period 1, 23 (30%) in period 2, and 15 (23%) in period 3. Clinically significant bleeding occurred on 8% of patient-days in period 1, 9% in period 2, and 5% in period 3 (adjusted p = 0.41). Thirteen (21%) patients died in period 1, 15 (22%) in period 2, and 11 (19%) in period 3 (adjusted p = 0.96).
Lowering the threshold for platelet transfusion led to fewer transfusions and did not change the incidence of clinically significant bleeding or mortality, suggesting that a threshold of 10 x 109/L platelets, used in resource-rich countries, may be implemented as a safe level for transfusions in sub-Saharan Africa.
Transfusion-transmitted infections (TTIs) are a global health challenge. One new approach to reduce TTIs is the use of pathogen reduction technology (PRT). In vitro, Mirasol PRT reduces the ...infectious load in whole blood (WB) by at least 99%. However, there are limited in vivo data on the safety and efficacy of Mirasol PRT. The objective of the Mirasol Evaluation of Reduction in Infections Trial (MERIT) is to investigate whether Mirasol PRT of WB can prevent seven targeted TTIs (malaria, bacteria, human immunodeficiency virus, hepatitis B virus, hepatitis C virus, hepatitis E virus, and human herpesvirus 8).
MERIT is a randomized, double-blinded, controlled clinical trial. Recruitment started in November 2019 and is expected to end in 2024. Consenting participants who require transfusion as medically indicated at three hospitals in Kampala, Uganda, will be randomized to receive either Mirasol-treated WB (n = 1000) or standard WB (n = 1000). TTI testing will be performed on donor units and recipients (pre-transfusion and day 2, day 7, week 4, and week 10 after transfusion). The primary endpoint is the cumulative incidence of one or more targeted TTIs from the Mirasol-treated WB vs. standard WB in a previously negative recipient for the specific TTI that is also detected in the donor unit. Log-binomial regression models will be used to estimate the relative risk reduction of a TTI by 10 weeks associated with Mirasol PRT. The clinical effectiveness of Mirasol WB compared to standard WB products in recipients will also be evaluated.
Screening infrastructure for TTIs in low-resource settings has gaps, even for major TTIs. PRT presents a fast, potentially cost-effective, and easy-to-use technology to improve blood safety. MERIT is the largest clinical trial designed to evaluate the use of Mirasol PRT for WB. In addition, this trial will provide data on TTIs in Uganda.
Mirasol Evaluation of Reduction in Infections Trial (MERIT) NCT03737669 . Registered on 9 November 2018.
Degloving injuries are surgical conditions in which an extensive portion of skin and subcutaneous tissue is detached from the underlying fasciae, muscles, or bone surface. Frequently, there is an ...association of fracture underlying the degloved area. We aimed to compare the short-term outcomes of degloving injuries with and without underlying fracture.
A prospective cohort study was conducted. We recruited patients with degloving injuries, and followed them up for 30 days to assess the outcomes. We collected data on socio-demography, cause and mechanism of injury, presence of underlying fracture, presence of shock at admission, injury severity score, location and size of degloving injuries, their management, and short-term outcomes. There were two comparison groups of degloving injuries based on the presence or absence of underlying fracture. We analyzed the differences between the two groups by using Fisher exact test for categorical variables and Student's t test for continuous variables; p values < 0.05 were considered to be significant. Risk ratio was calculated for the short-term outcomes.
There were 1.56% (n = 51) of degloving injuries among 3279 admitted trauma patients during the study period of 5 months; 1% (n = 33) with and 0.56% (n = 18) without underlying fracture. For the overall degloving injuries, male-female ratio was 2 and mean age was 28.8 years; they were caused by road traffic crashes in 84%, and resulted in shock at admission in 29%. In the group with underlying fracture, lower limbs were frequently affected in 45% (p = 0.0018); serial debridement and excision of the avulsed flap were the most performed surgical procedures in 22% (p = 0.0373) and 14% (p = 0.0425), respectively; this same group had 3.9 times increased risk of developing poor outcomes (mainly infections) after 30 days and longer hospital stay (26.52 ± 31.31 days, p = 0.0472).
Degloving injuries with underlying fracture are frequent in the lower limbs, and have increased risk of poor short-term outcomes and longer hospital stay. We recommend an early plastic surgery review at admission of patients with degloving injuries with underlying fracture to improve the flap viability and reduce the infection risk.
Early access to a monetary loan may mitigate some of the socioeconomic burden associated with surgical treatment and lost wages following injury. The primary objective of this study was to determine ...the willingness of orthopaedic trauma patients in Uganda to accept a formal financial loan shortly after their time of injury.
A consecutive sample of adult orthopaedic trauma patients admitted to Uganda's national referral hospital was included in the survey. The primary outcome was the self-reported willingness to accept a financial loan. Secondary outcomes included the preferred loan terms, fracture treatment costs, and the factors associated with loan willingness.
Of the 40 respondents (mean age, 40 years; 58% male), the median annual income was $582 United States dollars (USD) (range: $0-$6720). Around 50% reported a willingness to accept a loan with any terms. Patients requested loans with a median principal of $500 USD and a median interest rate of 5% with 12 months to pay back. Patients had received loans with a median principal of $142 USD, an interest rate of 10%, and payback of 6 months. These received loans covered a mean of 63% of the treatment costs. Patients with higher median incomes ($857 USD vs $342 USD) were more willing to accept a loan.
This study demonstrated a limited interest of orthopaedic trauma patients in Uganda to procure loans through formalized lending. This observed resistance must be overcome in future programs that rely on mechanisms such as conditional cash transfers or microfinancing to improve clinical and socioeconomic outcomes after injury.
Significant traumatic bone loss in developed countries occurs in a high proportion of open fractures ranging from 11.4% to 40%. However, literature from developing countries such as Uganda scarcely ...documents the prevalence and patterns of traumatic bone loss. Direct trauma and iatrogenic factors have been associated with traumatic bone loss as possible etiologies.
The study was aimed at establishing the prevalence and patterns of traumatic bone loss following open long bone fractures, and identifying factors associated with traumatic bone loss among patients presenting to Mulago Hospital within 24 hours of sustaining the injury up to completion of the initial fracture debridement, reduction, and fixation.
It was a prospective cohort study conducted at Mulago Hospital. A total of 136 open long bone fractures were registered and physically examined for traumatic bone loss. Patients who consented were recruited consecutively to participate in the study. Data on the patients' sociodemographics and fracture patterns were collected using pretested questionnaires and analyzed using Stata version 12.
From 123 patients, a total of 136 open long bone fractures were registered. The prevalence of traumatic bone loss following open long bone fractures was 26.5%. Of the 36 open long bone fractures with traumatic bone loss, the more common pattern (61.1%) was significant traumatic bone loss (≥ 2.5 cm long). Commercial motorcycle riders (22.0%) and traders (20.3%) were the most common occupations associated with open long bone fractures. Gunshot injuries were the leading cause of traumatic bone loss in open long bone fractures.
Our setting has a high prevalence of traumatic bone loss among open long bone fractures with the majority occurring in Gustilo type IIIB injuries of the tibia. The likelihood of traumatic bone loss is higher in open fractures caused by gunshots.
Alloimmunization to Rh Antigen Natukunda, Bernard; Isaac, Kajja; Kalyango, Joan N ...
Journal of blood medicine,
11/2022, Letnik:
13
Journal Article
Recenzirano
Introduction: Maternal red cell alloimmunization to Rh antigen in pregnant women occurs when the immune system is sensitized by foreign red blood cell surface antigens, in this case fetal red blood ...cells, inducing an immune response. Various antigens of blood group systems may cause alloimmunization, especially the Rh, Kel, Fy, JK, and MNS systems. This study aimed to determine alloimmunization to the different frequencies of Rh antigen among pregnant women in South Western Uganda. Methods: A total of 1369 pregnant women consented and were recruited into a cross-sectional study during their regular antenatal visits during the period August 2020 to July 2021. Samples (4 mL) of anticoagulated and coagulated blood were obtained, and Rh blood grouping including Rh antigen and the indirect antiglobulin test (IAT) was carried out using the agglutination technology of the LISS ID-Card technique in the Ortho Biovue ID-Micro Typing System. Results: Out of 1369 participants recruited to the study, 78 (5.7%) were D.sup.-, 1291 were D.sup.+, and 134 (9.8%) had alloantibodies. Among those with alloantibodies, 115 (85.8%) were D.sup.+ and 19 (14.2%) D.sup.-. The percentage alloimmunization according to the Rh antigens was highest in e (9.72%), c (2.48%), C (2.34%) and E (0.94%) antigens. With the ABO system, alloimmunization was highest in blood group B (10.7%), followed by A (10.6%), O (9.2%) and then AB (7.1%). Alloimmunization was more prevalent in D.sup.- (24%) than in D.sup.+ participants (8.9%). Rhesus antigen e was the most prevalent antigen (99.8%), followed by c. The alloimmunization rate of 9.8% among these participants is high, and appears in both D.sup.+ and D.sup.- women. The other Rhesus antigens are seen to cause alloimmunization, with antigen e causing the highest prevalence. In conclusion, there is a need to identify antibodies and study the outcome for clinical significance, especially in D.sup.+ women, to facilitate proper pregnancy management. Keywords: Rh alloimmunization, Rh antigens, hemolytic disease of the fetus and newborn, pregnant women, Western Uganda
BACKGROUND
A safe and adequate supply of blood is critical to improving health care systems in sub‐Saharan Africa, where little is known about the current use of blood. The aim of this study was to ...comprehensively describe the use of blood at a tertiary care hospital to inform future efforts to strengthen blood programs in resource‐limited settings.
STUDY DESIGN AND METHODS
Data were collected from blood bank documentation for all units issued at Mulago Hospital Complex in Kampala, Uganda, from mid‐January to mid‐April 2014.
RESULTS
A total of 6330 units (69% whole blood, 32% red blood cells, 6% platelets, 2% plasma) were issued over the 3‐month study period to 3662 unique patients. Transfusion recipients were 58% female and median age was 27 years (interquartile range IQR, 14–41). Median pretransfusion hemoglobin was 5.6 g/dL (IQR, 4.0–7.2 g/dL, n = 1090). Strikingly, cancer was the top indication for transfusion (33.5%), followed by pregnancy‐related complications (12.4%) and sickle cell disease (6.9%).
CONCLUSION
This study provides a comprehensive picture of blood use at a national referral hospital in sub‐Saharan Africa. Noncommunicable diseases, particularly oncologic conditions, represent a large proportion of demand for transfusion services.
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