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Biomedical subjects

G Tomson

Publications and source records attributed to G Tomson.

At least 19 recordsLinked to original sources

Local understanding, perceptions and reported practices of mothers/guardians and health workers on childhood malaria in a Tanzanian district--implications for malaria control.

Knowledge on local understanding, perceptions and practices of care providers regarding management of childhood malaria are needed for better malaria control in urban, peri-urban and rural communities. Mothers of under five children attending five purposively selected public health facilities in the Kibaha district, Tanzania, were invited to participate in 10 focus group discussions (FGDs). The health workers of these facilities were included in six other FGDs to elicit their professional views. Analysis was done using interpretative and qualitative approaches. Both health workers and all mothers were clear about the signs and symptoms of homa ya malaria, a description consistent with the biomedical definition of mild malaria. Although most of the mothers related this to mosquito bites, some did not. Mothers also described a severe childhood illness called degedege, consistent with convulsions. Most of the mothers failed to associate this condition with malaria, believing it is caused by evil spirits. Urinating on or fuming the child suffering from degedege with elephant dung were perceived to be effective remedies while injections were considered fatal for such condition. Traditional healers were seen as the primary source of treatment outside homes for this condition and grandmothers and mother in-laws are the key decision makers in the management. Our findings revealed major gaps in managing severe malaria in the study communities. Interventions addressing these gaps and targeting mothers/guardians, mother in-laws, grandmothers and traditional healers are needed.

Adult↗

Evaluation of the quality of amodiaquine and sulphadoxine/pyrimethamine tablets sold by private wholesale pharmacies in Dar Es Salaam Tanzania.

OBJECTIVE: There are several independent reports in Tanzania of treatment failures with commercially available sulphadoxine/pyrimethamine (SP) and amodiaquine (AQ) brands. The aim of this work was to assess the quality of SP and AQ tablets marketed by wholesale pharmacies in Dar Es Salaam, Tanzania. METHODS: All eight wholesale pharmacies authorized to import medicines and located in Dar Es Salaam were included in the study. From each pharmacy, samples of all SP and AQ brands available at the time of sampling were bought, provided they had a shelf-life of at least 1 year. A sample was either an intact box of 100 tablets or a sealed tin of 100 tablets. To ensure blinding, 30 tablets of each sample were removed from their original containers, coded and sent to the quality control laboratory for analysis. The name, strength, batch number, manufacturer and the expiry dates of the tablets were recorded. In total 15 AQ and 18 SP samples were collected. Identity, assay for content of active ingredients and dissolution assay were performed as described in the United States Pharmacopoeia (USP). RESULTS: All samples passed the identity test. Among the AQ samples collected, two of 15 (13%) failed the dissolution test but all passed the assay for content, whereas two of 18 (11%) and eight of 18 (44%) SP samples failed the assay for content and dissolution tests, respectively. None of the pharmacies stocked all AQ and SP brands. CONCLUSION: This work reveals the availability of poor quality antimalarial drugs on the Tanzanian market. Use of substandard drugs could have serious clinical consequences to patients. The results support the need for continuous monitoring of the quality of marketed drugs to ensure safety and efficacy of these products in the treatment of malaria in endemic areas.

Amodiaquine↗

Private pharmacies in Hanoi, Vietnam: a randomized trial of a 2-year multi-component intervention on knowledge and stated practice regarding ARI, STD and antibiotic/steroid requests.

OBJECTIVES: To assess the effectiveness of a multi-component intervention on knowledge and reported practice amongst staff working in private pharmacies in Hanoi regarding four conditions: urethral discharge [sexually transmitted diseases (STD)], acute respiratory infection (ARI), and non-prescription requests for antibiotics and steroids. METHOD: Randomized controlled trial with staff working in 22 matched pair intervention and control private pharmacies who were administered a semistructured questionnaire on the four conditions before and 4 months after the interventions. The interventions focused on the four conditions and were in sequence (i) regulations enforcement; (ii) face-to-face education and (iii) peer influence. Outcome measures were knowledge and reported change in practice for correct management of tracer conditions. RESULTS: The intervention/control-pairs (22 after drop-outs) were analysed pre- and post-intervention using the Wilcoxon signed rank test. STD: More drug sellers stated they would ask about the health of the partner (P = 0.03) and more said they would advise condom use (P = 0.01) and partner notification (P = 0.04). ARI: More drug sellers stated they would ask questions regarding fever (P = 0.01), fewer would give antibiotics (P = 0.02) and more would give traditional medicines (P = 0.03). Antibiotics request: Fewer said they would sell a few capsules of cefalexin without a prescription (P = 0.02). Steroid requests: No statistical difference was seen in the numbers who said they would sell steroids without a prescription as numbers declined in both intervention and control groups (P = 0.12). CONCLUSION: The three interventions in series over 17 months were effective in changing the knowledge and reported practice of drug sellers in Hanoi.

Acute Disease↗

Building the national drug policy on evidence--a cross sectional study on assessing implementation in Lao PDR.

The National Drug Policy (NDP) of Lao PDR, endorsed in 1993, has since 1995 been implemented through an intervention program in five pilot areas out of 18 provinces, including training of health personnel. The aim was to assess the impact of the NDP program to get evidence for revising the policy. In a cross sectional design, comparisons were made between the pilot province of Luangphrabang (LPB) and the non-pilot province of Sayabury (SBR). In each province, three districts were purposively chosen. Four pharmacies at the public hospitals were included, while 20 private pharmacies were randomly selected. A set of 29 combined indicators was utilized. One hundred and ten prescriptions for under-five children with simple diarrhea and 240 adult outpatient prescriptions were sampled. Furthermore, twelve health care managers were interviewed on knowledge and attitudes. LPB health managers had better knowledge of NDP concepts. Significantly more essential drugs (ED) were available in the private pharmacies in the pilot province. The proportion of prescriptions of ED in hospitals was higher in the pilot province (95% in LPB vs 86% in SBR; p<0.001). Fewer drugs per patient were prescribed in the pilot province (2.7 vs 3.3, p<0.001), and the management of simple diarrhea in children was significantly more in accordance with Standard Treatment Guidelines. The pilot province performed significantly better regarding several aspects of quality and rational use of drugs, probably related to the implementation program. National as well as regional and global diffusion of research findings is recommended towards evidence-based national drug policies.

Case-Control Studies↗

The quality of public and private pharmacy practices. A cross sectional study in the Savannakhet province, Lao PDR.

AIM: The aim was to study the practices of public and private pharmacies in the Savannakhet province, Lao PDR, in relation to defined aspects of good pharmacy practice (GPP) and rational use of drugs (RUD). STUDY DESIGN: The study design was cross-sectional using structured interviews and observations. A total of 105 drug sellers (31% and 4% had pharmacy education at public and private pharmacies, respectively) were interviewed, and the pharmacies were inspected. In addition, 576 customers were interviewed immediately after the drug transaction and all their drug purchases were recorded. Facility, patient-care and prescribing indicators covering aspects of GPP and RUD were used to measure and compare the quality of services of the pharmacies. RESULTS: The results showed that public pharmacies differed significantly from private pharmacies, with lower mean scores for availability of essential drugs (5.1 vs 6.4), 95% confidence interval (CI -2.23, -0.34) and essential materials (5.6 vs 6.9, 95% CI -2.40, -0.20), and with a higher percentage of antibiotics dispensed (34% vs 24%, P<0.02), as well as more injections (31% vs 7%, P < 0.001) and drugs per customer (2.4 vs 1.4, 95% CI 0.84, 1.16). More drug purchases were decided by health workers at public pharmacies than at private pharmacies (92% vs 16%). At public pharmacies, significantly more drugs were prescribed from the National Essential Drug List (76% vs 56%, P=0.004), and more drugs had an international non-proprietary name (67% vs 35%, P<0.001). There was no significant difference regarding order in the pharmacy, oral information and drugs adequately labelled at the public pharmacies compared with the private pharmacies. CONCLUSION: In spite of the differences shown, both public and private pharmacies performed suboptimally in relation to several aspects of GPP and RUD. The lack of essential drugs, essential materials, information on drug use and adequate drug labelling all contribute to irrational use of drugs. Interventions are needed to improve practice and drug use.

Adult↗

Real world pharmacy: assessing the quality of private pharmacy practice in the Lao People's Democratic Republic.

The private sector is a dominant actor in the provision of pharmaceuticals, particularly in developing countries. Private provision of drugs has been associated with risks regarding availability, affordability, rational use and drug quality. Ensuring an effective regulatory framework is therefore a major challenge for governments, yet the capacity of regulatory authorities is often outstripped by private sector growth. In the Lao People's Democratic Republic (Lao P.D.R.), a poor, landlocked country in South East Asia, the private provision of drugs has increased dramatically since the liberalisation of the economy in the late 1980s. This paper aims to describe the quality of the private pharmacy services in the Savannakhet province of Lao P.D.R. In order to do this, a monitoring instrument which serves to make the concept of Good Pharmacy Practice (GPP) operational was developed and applied to a sample of pharmacies. Service quality, as measured by three facility-specific indicators, showed a tendency to be lower in the most distant districts. Poor dispensing practices were manifest by a lack of information about drugs sold in 59% of cases, drugs not being labelled in 47% and different drugs being mixed in the same package in 26% of cases. The prices of four sample drugs were slightly higher in the remote districts. A 10-fold price difference for the same drug was recorded in one district. After reporting the findings, the paper discusses the possible influence of district and pharmacy variables on the quality of services, and goes on to discuss the price differences. It is concluded that further government interventions are needed in order to improve the quality of services and to focus regulatory action on a limited number of aspects, to ensure that drugs can be traced before trying to establish a comprehensive regulatory system.

Developing Countries↗

Private pharmacy practice and regulation. A randomized trial in Lao P.D.R.

OBJECTIVES: The objective of this study was to assess the effectiveness of government regulation of private pharmacy practice in a low-income country. METHODS: The intervention comprised inspections of the pharmacies, information, and distribution of documents to drug sellers and sanctions. It was implemented at two different intensity levels, active and regular intervention. The methods used to assess the effect of the interventions were interviews with the district drug inspectors, drug sellers and customers, inspection of drug purchases, and indicator surveys of pharmacies. Indicators for pharmacy-specific quality as well as for dispensing quality were developed. RESULTS: The main finding was one of strong overall improvements from initially low levels. The improvements were particularly marked by increases in the availability of essential materials for dispensing by 34% and in order in the pharmacy by 19%. Information given to customers increased from 35% to 51% and the mixing of different drugs in the same package went down from 17% to 9%. The pharmacies in the active intervention districts showed greater improvements for four of the six indicators, although statistically significant compared with the regular intervention districts only for the essential materials indicator. CONCLUSIONS: It was concluded that the regulatory activities have probably been an important factor behind the service quality improvements. It appeared feasible as well as effective to regulate private pharmacy practice in this particular low-income setting.

Developing Countries↗

Antibiotic medication and bacterial resistance to antibiotics: a survey of children in a Vietnamese community.

OBJECTIVE: To investigate antibiotic use and antibiotic susceptibility of respiratory tract pathogens in children aged 1-5 years in Bavi, Vietnam. METHOD: Nasopharynx and throat specimens were collected from 200 children from randomly selected households in a demographically defined population. Respiratory isolates were tested for antibiotic susceptibility according to the standard disk diffusion method. A questionnaire survey of carers elicited information on type of antibiotic used, duration of treatment, where the antibiotics had been purchased, type of treatment information retained by carers and episodes of illness preceding the study. RESULTS: 82% of the children had at least one symptom of acute respiratory tract infection (ARI) in the 4 weeks prior to the study, and of these 91% were treated with antibiotics. The most commonly used antibiotics were ampicillin (74%), penicillin (12%), amoxicillin (11%), erythromycin (5%), tetracycline (4%) and streptomycin (2%). Ampicillin was used for 3.3 days on average (SD:1.8) and penicillin for 2.6 days (SD:0.7). When deciding which antibiotic to use, 67% of the carers consulted the pharmacy seller, 11% decided themselves and 22% followed the doctor's prescription. The carrier rate of Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis was 50%, 39% and 17%, respectively. Isolates from 145 children were susceptibility tested, and 74% were found to carry resistant pathogens. Of the tested isolates, 90% of S. pneumoniae, 68% of H. influenzae and 74% of M. catarrhalis were resistant to at least one antibiotic. The mean number of antibiotics (susceptible strains excluded) to which resistance was found was 2.0 (SD:1.2), 2.5 (SD:1.8) and 2.1 (SD:0.9), respectively. S. pneumoniae and H. influenzae showed high resistance to tetracycline (88% and 32%, respectively), trimethoprim/sulphonamide (32% and 44%), and chloramphenicol (25% and 24%). 23% of S. pneumoniae were erythromycin-resistant and 18% of H. influenzae isolates were resistant to ampicillin. There was a significant difference in ampicillin and penicillin resistance between the group of children previously treated with beta lactam antibiotics and the group of children who did not receive antibiotics. CONCLUSION: As reported by the carers, children in Bavi are treated with antibiotics frequently. Most antibiotics were obtained without consulting a doctor. High levels of antibiotic resistance and high prevalence of multidrug-resistant strains were found among respiratory pathogens. The existence of a large reservoir of resistance genes among children in low-income countries represents a threat to the success of antibiotic therapy throughout the world. Multi-faceted programmes to improve rational use of antibiotics in Vietnam are urgently needed.

Adult↗

The World Bank and pharmaceuticals.

Within less than a decade the World Bank has become the largest single source of finance (loans) for health in low and middle income countries as well as a major player in the field of pharmaceuticals. Often 20-50% of the recurrent government health budget in developing countries is used to procure drugs. Drugs are among the most salient and cost-effective elements of health care and often a key factor for the success of a health sector reform. However, pharmaceuticals are frequently being used irrationally, mainly due to market imperfections in health care, such as information asymmetries, leading to serious health problems and a heavy financial burden on the health system. Lending priorities set by the World Bank could be used to promote public health sector reform, leading to the rational use of affordable and available drugs of good quality in developing countries. This report provides the first analysis of World Bank activity in the pharmaceutical sector worldwide. The analysis of 77 staff appraisal reports, describing the planning phase of World Bank country projects, shows that 16% of the total World Bank health, nutrition and population budget, or approximately US$1.3 billion, has been committed to loans or credits supporting pharmaceutical activities in the programme countries between 1989-95. Roughly US$1.05 billion has been committed to procurement of drugs and medical equipment. Only 5% of the total pharmaceutical sector lending is committed to software components such as drug policy work and rational use of drugs. No more than 45% of the projects were developed in collaboration with pharmaceutical expertise. The World Bank is recommended to improve its pharmaceutical sector involvement by promoting drug policy research and development including national and international dialogue on pharmaceutical issues to ensure rational use of both drugs and loans. In this, the World Bank has an advantage given its experience from working with both the private and the public sector, its in-house expertise in health economics, and lastly its ability to be listened to by governments through its power.

Data Interpretation, Statistical↗

STD management by private pharmacies in Hanoi: practice and knowledge of drug sellers.

BACKGROUND: Prompt treatment of sexually transmitted infections may reduce the incidence of HIV/AIDS infections. With health sector reforms private pharmacies are increasingly the first and only contact with health delivery services. OBJECTIVES: To find out how patients with STDs are treated at private pharmacies in Hanoi, and what drug sellers know about STD management. METHODS: Five simulated clients were taught to adopt a scenario stating that their friend had a urethral discharge. They visited 60 randomly selected private pharmacies in urban Hanoi and noted all questions asked, advice offered, and treatment given. Afterwards interviewers administered a semistructured questionnaire to all people working in the 60 pharmacies. RESULTS: Drug treatment was given in 84% of the 297 encounters averaging 1.5 drugs and 1.2 antibiotics per encounter. Quinolones were given 188 times. No dispensing was adequate for chlamydia or was in accordance with the national guidelines. No questions were asked in 55% of encounters and no advice was given in 61%. Questions on sexual activity were asked in 23% (69) of cases and about the health of the partner twice (1%). Advice to practise safe sex was given in 1% of encounters and for the partner to seek treatment only once. Of 69 questionnaires administered 51% said they would refer to a doctor, 16% said they would ask about the sexual activity 1% said they would ask about the health of the partner, 7% said they would advise using a condom, and 1% advised telling the partner to seek treatment. Even after prompting, 61% would ask no questions and 80% would give no advice. CONCLUSIONS: Even though 74% of pharmacists and drug sellers know that they should not treat STD patients, 84% actually did. None gave syndromically correct treatment. In both the questionnaire and during the simulated client methods, numbers advising on partner notification and condom use were very poor. Educational or peer awareness interventions are urgently needed among private pharmacists in Vietnam.

Community Pharmacy Services↗

Knowing when but not how!--mothers' perceptions and use of antibiotics in a rural area of Viet Nam.

Given the world-wide focus on how to rationally use antibiotics, national drug policy programmes have been developed in many countries in order to minimize the environmental antibiotic pressure and thereby hopefully limit increasing bacterial resistance. This study investigated perceptions of antibiotics in a health system with weak drug regulation. The study was conducted in two rural communes in Viet Nam, with a drug market characterized by the increased accessibility and consumption of pharmaceuticals. The study focused on rural mothers' perceptions and use of antibiotics in the treatment of acute respiratory infections (ARI) in children 5 years and under. A combination of qualitative and quantitative methods were used including key informant interviews, focus group discussions, and interviews with mothers and drug vendors. The study demonstrated that using a combination of qualitative and quantitative methods gives a better understanding of the prevailing perceptions and use of antibiotics in communities. The results showed that the mothers recognized well the signs of severe ARI and that antibiotics were reserved for more severe illness episodes, where penicillin V and ampicillin were first drugs of choice. However, the mothers' perceptions and use of antibiotics reflects indigenization of antibiotics into traditional Vietnamese thinking and medical practice. This resulted in self-medication and a respect for antibiotics from the mothers' point of view. A first step towards the rational use of antibiotics is already taken where mothers, as the health decision-maker, know when to initiate antibiotic treatment and try to limit unnecessary use of antibiotics. The next step is to develop a well-functioning health education programme in order to promote the correct use of antibiotics for a successful clinical outcome. This requires acknowledgement of the mothers' culture based behaviour.

Acute Disease↗

Pharmaceutical sector in transition--a cross sectional study in Vietnam.

Increasing efforts are being made to improve pharmaceutical sector performance in low- and middle-income countries. An essential tool for such work is an objective and standard method of assessment which can be used to promote evidenced based National Drug Policy development and implementation. The average drug expenditure per capita has steadily increased in Vietnam and at the time of this study a National Drug Policy was being developed. This study assessed the Vietnamese pharmaceutical sector 1991-1994, focusing on the standard of the drug quality control system, availability of drugs and rational use of essential drugs in the private and public sectors by means of standardised indicators. The results from this study show that the quality control system is impaired and does not have capacity to quality control all drugs on the market. The availability of essential drugs is good whereas essential drugs are poorly prescribed, injections common and there is a high average number of drugs per prescription, both in the public and private sectors. Violations are common and enforcement of regulations weak. On top of this there is an active commercial advertising and marketing of drugs. These findings identify priorities for action to improve the present situation where the development and implementation of the Vietnamese National Drug Policy will be of major importance.

Cross-Sectional Studies↗

"Doi moi" and private pharmacies: a case study on dispensing and financial issues in Hanoi, Vietnam.

Vietnam, a developing country, has had comparatively good health and human survival at low cost. The economic reform changed the health care system, and private pharmacies during the last 5 years have taken over a majority of the drug distribution. Problems include weaknesses in drug regulation and reported increases in antibiotic resistance. This case study, a purposive sample of two private pharmacies in Hanoi, explored management, including dispensing, inventory and financing, using the concept of triangulation. Observations and interviews of customers were complemented by stock inventory and interviews of the pharmacy staff. Drugs were classified according to the ATC code and the essential drug list of Vietnam. Pretested protocols were used. In all 1833 encounters were studied during the 2 weeks, out of which 286 were children. Less than 1% of customers came with prescriptions and 94.9% decided by themselves which drugs to buy. Antibiotics represented 17%, of which 90% were broad spectrum. Ampicillin dominated, both in children and adults. Some 50% of the antibiotics were given for 2.5 days or less. Less than 50% of the drugs were essential drugs (ED) on dispensing and even less on inventory. Antibiotics and vitamins were the most commonly sold drugs and, overall, brand names dominated. Little if any drug information was observed. Antibiotics were said to represent the most profitable drugs, according to the pharmacy staff. More than 20% of all products were combination drugs, including irrational and popular products with antibiotics and corticosteroids and combinations of aspirin, phenacetin and caffeine. This study shows an unexpectedly high proportion of customers, being "Tu Lam Bac Sy" (their own doctors), deciding themselves which drugs to buy. Although the "Doi moi" renovation has led to much improved drug availability, at least in urban setting, our case study highlights major problems in need of urgent actions. In particular the prevailing practices regarding antibiotics and combination drugs need to be seriously scrutinized and drug regulatory mechanisms should be enforced.

Adolescent↗

Influencing prescribing for urinary tract infection and asthma in primary care in Sweden: a randomized controlled trial of an interactive educational intervention.

Our aim was to evaluate effects on prescribing for urinary tract infection (UTI) and asthma, of an education with messages based on national guidelines, aimed at improving prescribing in primary care in Sweden. The study is part of the European Drug Education Project. A randomized controlled trial, with groups of general practitioners (GPs) allocated to education on UTI (18 groups, 104 GPs) or asthma (18 groups, 100 GPs), the two parallel intervention arms being controls for each other. Feedback was provided on the GP's judgments of simulated cases and prescribing. Prescribing indicators were developed and measured before and after the intervention. Analysis was performed by multi-level technique. Prescribing of first choice UTI drugs increased in the intervention arm from 52% to 70% and remained constant in the control arm (P < 0.001). The proportion of patients receiving an inhaled corticosteroid increased insignificantly in both study arms. The educational model can be used to improve prescribing. Further studies are needed to define when the model is effective.

Adult↗

Combining feedback from simulated cases and prescribing. Design and implementation of an educational intervention in primary care in Sweden.

OBJECTIVES: To develop and evaluate a new model of continuing medical education (CME) for general practitioners (GPs). The study is part of the joint European Drug Education Project (DEP). This paper presents the Swedish part regarding the design of the evaluation study, the educational methodology, and the participants' evaluation. METHODS: An educational model was developed. Two peer group discussions (facilitated by a GP/pharmacist team), including individual feedback on the GPs' judgments of written simulated cases and prescribing, were main components. The model was tested in a parallel randomized controlled study including 36 GP groups, allocated to education on asthma or urinary tract infections. Background and outcome data were knowledge and attitudes (K/A) assessed by a questionnaire and prescribing practices for actual and written simulated cases. The GPs' evaluation of the model was captured through a questionnaire. RESULTS: All 36 groups completed the program. The mean participation rate in the group discussions was 75%. The response rates were 82-98% regarding outcome data K/A questionnaire and written cases), and 80% regarding the evaluation questionnaire. Prescribing data were captured for 99% of the GPs. Both group discussions were considered important by 84-89%. Eighty-seven percent wished to take part in similar CME activities for other conditions. About 80% reported that their purpose in participating had been fulfilled. CONCLUSIONS: It was feasible to evaluate the developed educational model by using a two-armed parallel study design. The model was well received by the participants.

Adolescent↗

Tet offensive: winning hearts and minds for prevention. Discourse and ideology in Vietnam's "Health" Newspaper.

A quantitative content (CA) and qualitative discourse analysis (DA) was made of all 67 articles in the February 1995 ("Tet") issue of Suc Khoe ("Health"), a bi-weekly newspaper issued by Ministry of Health, Hanoi, Vietnam. The aim was to uncover discursive strategies used in the construction of health-related meaning during a period of rapid economic transition and latent ideological struggle in Vietnam. The DA was based on the work of i.a. Foucault, Fairclough, Thompson, and Fowler. The CA showed a strong domination of Western sources. There were four themes: prevention, cure, the Tet festival, and crime and punishment. In the two first, health-related groups, prevention (n = 31) dominated over cure (n = 22), modern (n = 19) over traditional (n = 13) medicine, and overall, the theme of continuity (prevention and crime/punishment) over change (cure and Tet), reflecting Vietnam's programmatic pluralism in the health field and its ideological struggle against outside influences. The DA revealed three mixed but unintegrated discourses in the material; "popular" (simplistic, authoritarian, and sentimentalizing), "expert" (technical, egalitarian, and uncritical), and "nationalist" (administrative, impersonal and propagandistic). Prevention was mainly expressed via the popular discourse, whereas cure was represented, prospectively, by the expert discourse, and retrospectively, by the nationalist discourse. This combined order of discourse functions, we suggest, as a disciplinary "Discourses of Order". A proposed integrative CA/DA model relates content themes and discursive foci to the classical rhetorical dichotomy hope/fear. We see "Health" as struggling to uphold traditional besieged values under the new economic policies by using preventive propaganda in both medical and political terms. These findings are compared with expressed editorial policy statements.

Health Education↗

Chloroquine blood concentrations and malaria prophylaxis in Tanzanian women during the second and third trimesters of pregnancy.

OBJECTIVE: Routine malaria prophylaxis with chloroquine (CQ) is recommended to pregnant semi-immune women in several countries in Africa. The dosage is empirically based. We investigated whether blood CQ concentrations and apparent oral blood clearance (CL/F) change during the course of pregnancy. We also studied whether malaria parasites could be detected together with low CQ blood levels. METHODS: Forty nine semi-immune Tanzanian women were recruited in the 16th week of pregnancy. They were given 310 mg oral CQ base once per week as prophylaxis during the whole pregnancy. Capillary blood samples were taken for analysis of CQ before treatment and at weeks 26 and 36. Blood samples were dried on filter paper and analysed by HPLC. Blood was also drawn to detect occurrence of malaria parasites. RESULTS: A total of 25 women fulfilled the sampling schedule. CL/F increased significantly from 160 ml.min-1 at week 26 to 180 ml.min-1 at week 36. In 7 of 25 women, CL/F increased > 20%. Trough blood CQ concentrations, determined on four occasions at week 26 and at week 36 varied between 200 and 900 nmol.l-1. No statistically significant differences between occasions were seen. Malaria parasites were seen in two individuals early in pregnancy. CONCLUSION: Blood CQ CL/F showed a small increase during the course of pregnancy. The estimated mean blood CL/F values of 160 and 180 ml.min-1 (week 26 and 36, respectively) were higher than the mean CL/F of 125 ml.min-1 in non-pregnant individuals, published previously. Efficacy of higher dosages of CQ in malaria prophylaxis in pregnant women could, therefore, be evaluated in controlled trials in high-risk malaria areas.

Adult↗