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Managing disposal of water produced with petroleum in Kuwait.

Disposal of water produced with petroleum has been of great interest in Kuwait for the last 20 years. The current problem arose when the Burgan oil field, which is the second largest field in the world, experienced successive increases in the water content of the produced oil. This study introduces a decision-making analysis of the considered alternatives for the disposal of the produced water. Four alternative solutions exist for the industry as practical solutions for the disposal of water produced in Kuwait. The first method utilizes a large number of pits to discharge water. The second alternative depends on discharging water into sealed pits. The third approach to dispose water is by injecting the water underground. The last method is similar to the previous one, but takes into consideration the recovery of reservoir pressure to maintain the rate of oil production. A questionnaire was distributed to 48 experts at the top management level of the petroleum companies and the governmental authority. The data collected considered cost, efficiency, and environmental parameters. Based on the data, a statistical analysis was conducted using the factor analysis method to reduce the number of investigated variables. The analysis concluded that the optimal solution is to use the effluent injection method to discharge water produced with oil in Burgan and similar fields in Kuwait.

Data Collection↗

The distribution and inventory of total and methyl mercury in Kuwait Bay.

Sediment (surface and core) sampling was conducted during the period from August 96-December 98 from intertidal and offshore areas in Kuwait Bay. The highest (and most variable) concentrations of total mercury (T-Hg; 36500+/-34930 ng g(-1)) are encountered around the previous industrial outfall where sediments are disturbed by shipping activities. The concentrations of T-Hg are lower in the Shuwaikh Port area (650+/-210 ng g(-1)) and continue to decrease towards the northern coastline of Kuwait Bay (average concentrations in the wider Bay region are 50+/-30 ng g(-1)). These values are still above background concentrations of 15-20 ng g(-1). Calculation of the total inventory of mercury in all the surface sediments of the studied area indicates that approximately 22.5 ton is present which is similar to the estimated industrial discharges of approximately 20 ton suggesting that the contamination is largely confined to the Bay and that releases to the wider Gulf region are small. The distributions of MeHg are similar to those of T-Hg and represent ranges between 0.23% and 0.5% of the T-Hg indicating that surface sediments within Kuwait Bay contain approximately 80 kg of this chemical.

Environmental Monitoring↗

Collection and transportation cost of household solid waste in Kuwait.

The specific aim of this funded research project was to examine and evaluate the efficiency and the effectiveness of the municipal solid waste collection and transportation system in the State of Kuwait. The contract resources of the seven contracting firms, the annual contract budgets, and the district area and population of each service contract are presented. Service efficiency and effectiveness indicators for each collection/disposal contract are also computed and discussed. The cost of collection and transportation of household waste in Kuwait is also compared with those of a number of urban areas in other nations. The low energy and manpower costs are mainly responsible for the favorable cost of management, collection and transportation of residential waste in Kuwait.

Costs and Cost Analysis↗

Analysis of oil components and hydrocarbon-utilizing microorganisms during laboratory-scale bioremediation of oil-contaminated soil of Kuwait.

A huge amount of oil-contaminated soil remains unremediated in the Kuwait desert. The contaminated oil has the potentiality to cause pollution of underground water and to effect the health of people in the neighborhood. We have been studying bioremediation of Kuwait oil-contaminated soil. Chemical analyses of biodegraded compounds and isolation of petroleum hydrocarbon-decomposing microorganisms were carried out. From the chemical analyses, it was revealed that the decomposed compounds were mainly saturated fractions from alumina column chromatography and that the aromatic fractions were not decomposed well. Isolation of bacteria was carried out for eight kinds of hydrocarbons which are components of crude petroleum (n-hexadecane, 2,6,10,14-tetramethylpentadecane, 1,4-diisopropylbenzene, naphthalene, 1-methylnaphthalene, phenanthrene, anthracene, and perylene). Many of the n-hexadecane- and 2,6,10,14-tetramethylpentadecane-decomposing bacteria were isolated, but aromatic compound-decomposing bacteria were not enriched. It was concluded that the slow decomposition of aromatic compounds was due to the low population of aromatic compound-decomposing bacteria in the Kuwait desert soil.

Bacteria↗

Radioactivity concentrations in sediments and their correlation to the coastal structure in Kuwait.

Gamma-ray spectrometric measurements were performed on sediment samples from the coast of Kuwait to study the concentration of natural as well as man-made radioactive sources. The coast of Kuwait, which extends for some 170 km is mainly soft sedimentary colitic limestones or sandstones, overlaid in many areas with beach or wind-blown sand. In the north, suspended material from the Shatt Al-Arab delta has settled to form extensive soft areas of intertidal mud within Kuwait Bay. Forty samples were taken at different points along the coast in undisturbed areas at intervals of about 5 km. Collection was carried out during low-tide, where it was possible to collect sediments from the wet region that was covered by seawater during the high tide. At each of the sample sites, a sampling area of about 1 m2 was considered. Samples collected from the north were of a muddy nature, whereas the southern samples were sandy. All samples were left to dry in open air before drying in the oven at 105 degrees C for 2-3 days to remove all water content. The radioactivity in southern areas reaches about one half of the values commonly assigned as the world average. In the northern areas, higher radioactivity concentrations are found but are still below the international levels.

Cesium Radioisotopes↗

Salsola pollen as a predominant cause of respiratory allergies in Kuwait.

BACKGROUND: Respiratory allergies are common in Kuwait, and the role of certain allergens has been previously documented. OBJECTIVE: To evaluate the results of skin prick tests to a range of allergens that were considered relevant to the vegetation surveys and aerobiological studies performed in Kuwait. METHOD: New patients attending our center during August 2002 to February 2003 with asthma or allergic rhinitis underwent skin prick tests to a battery of allergens. RESULTS: A total of 451 patients aged 5 to 60 years (mean age, 29.5 years) were tested. Of these patients, 403 (89.4%) had a positive test result to at least one allergen and were considered allergic. A total of 76.7% of the allergic patients had a positive reaction to Salsola pollen, with a mean wheal diameter of 8.25 mm (median, 8 mm). Chenopodium album was positive in 57.6% and Bermuda grass was positive in 38.2% of the allergic cases. Indoor allergens seemed to play a lesser role than pollens: Dermatophagoides pteronyssinus was positive in only 37.5%, and American and German cockroaches were positive in 33.2% and 22.3%, respectively. All the allergens other than Salsola elicited a mean wheal diameter of less than 6.25 mm (median, < or = 6 mm). CONCLUSIONS: Indoor allergens seem to play a lesser role in respiratory allergies in Kuwait. Most allergic patients become sensitized to pollens; the strongest and most frequent reaction is from Salsola pollen. Salsola imbricata is found growing extensively in most areas of the country, flowering mainly in autumn, when the most common pollen is of the Chenopod-Amaranth type and when most patients with seasonal allergic rhinitis become symptomatic.

Adolescent↗

Epidemiological and genetic study of 121 cases of oral clefts in Kuwait.

AIM: The aim of the study was to ascertain some epidemiological factors such as sex and consanguinity that may be associated with cleft lip with or without cleft palate (CL +/- CP) in Kuwait as well as to conduct genetic segregation analysis of these families. SETTING AND SAMPLE POPULATION: A total of 113 families ascertained through 121 CL +/- CP and CP surgical probands in Kuwait. The frequencies of cleft types and the epidemiological variables were calculated using SPSS version 5.0 software. Chi-square for goodness-of-fit test was used to test the significance of the associated epidemiological variables to facial clefts. Genetic segregation analysis was performed on 76 families with extended pedigrees and included only those with non-syndromic CL +/- CP (NS CL +/- CP). Major locus segregation analysis was used to fit models to the observed family patterns under Class A regressive models as implemented by REGD routine in S.A.G.E. release 4.0. A test for heterogeneity was also conducted to complete data set in addition to two subsets: Arabs and nomads. RESULTS: Of the 121 patients, 34(28.1%) had CP, 30(24.8%) had CL and 57 (47.1%) had CL + CP. The male to female ratio was 0.89 for CP, 1.14 for CL, 1.35 for CL + CP and 1.2 for all the clefts. The percentage of consanguineous families among those with a positive family history (60%) was not significantly different from that of the general population (54.3%), whereas for all the families with clefts the percent consanguineous was significantly lower (38%). No evidence of heterogeneity in the results between the Arab and nomad subsets was observed. The results for the major locus segregation analysis were inconclusive. CONCLUSION: No definite association was observed between consanguinity and the occurrence of facial clefts in Kuwait. General transmission models in the full data set showed no evidence of heterogeneity in the results between the Arab and nomad subsets.

Adolescent↗

Oral health behaviour of 12-year-old children in Kuwait.

OBJECTIVES: The objectives of the study were: (1) to describe the pattern of oral health behaviour of 12-year-old children in Kuwait, (2) to analyse this in relation to parental education, dental visiting habits and location, and (3) to establish a baseline for planning and evaluation of an oral health care programme for secondary schoolchildren. DESIGN: Cross-sectional, interviews with children in 1995. SAMPLE AND METHODS: The sample included 500 12-year-old schoolchildren (250 boys and 250 girls) selected from schools in Kuwait. All the children agreed to take part. Interviews with the children were carried out in the schools by four trained and calibrated Arabic speaking interviewers. RESULTS: During the previous 12 months, 28% of the children had experienced oral health problems--toothache (10%), or had felt discomfort (18%) either often or occassionally. The children reported that they needed oral hygiene instruction (71%), fillings (32%) and tooth extraction (23%). For 53% of the children the reason for the most recent visit to a dentist was pain or problems with teeth or gums. At their last dental visit 26% of the children had undergone a tooth extraction. The consumption of sugary foods and drinks was extremely high. Children who had visited a dentist within the last 12 months and children whose parents had higher education levels more often claimed frequent toothbrushing than those with no previous dental visiting experience and those whose parents had a low level of education. CONCLUSIONS: Oral health education and oral health care programmes should be established in secondary schools in Kuwait to influence the oral health behaviour of the children and to avoid further deterioration in their oral health.

Child↗

Plasmid-mediated multidrug resistance in Salmonella typhi in Kuwait.

Multidrug resistant Salmonella typhi infection is common in Kuwait. Between January 1993 and December 1994, 266 strains of S. typhi were isolated from blood of suspected typhoid fever cases attending the Infectious Disease Hospital, Kuwait. Of these, 205 strains were isolated from patients from the Indian sub-continent, 105 (45%) of which showed resistance to one or more drugs; 91 of these resistant strains showed resistance to the oral antimicrobials ampicillin, chloramphenicol, tetracycline and co-trimoxazole (ACTCo). All 266 isolates were sensitive to fluoroquinolones and cephalosporines. The minimum inhibitory concentrations (MIC) for ampicillin, chloramphenicol and tetracycline in resistant strains were > 1000 micrograms/ml. All 91 strains with ACTCo resistance pattern transferred their resistance to a recipient E. coli strain, whereas none of the remaining 14 strains with different resistance patterns transferred theirs. This paper reaffirms that multidrug resistant S. typhi is quite common in Kuwait and that such resistance is encoded by auto-transferring plasmids.

Anti-Bacterial Agents↗

Leprosy in Kuwait: an epidemiological study of new cases.

The latency of infection in leprosy is long so that new cases may present several years after emigration from endemic areas. This is of concern to the health authorities in Kuwait, since there is a sizeable immigrant population. An epidemiological study of new cases was, therefore, conducted to assess the extent of the leprosy problem. A total of 121 (99 male, 22 female) consecutive new leprosy patients were diagnosed nationwide over a six-year period (1983-1988). Over 95% of the patients were foreign born, emphasizing that the problem in Kuwait is mainly a reflection of immigration patterns. There were 74 cases of Asio-Indian origin, 13 Oriental and 34 Arab (including two Kuwaiti). This represents a respective mean incidence of the disease in Kuwaitis and other nationalities of 0.49 and 18.92 per 100,000 per year. Polar lepromatous (LL) leprosy was the most frequent type in the Arab group (44.1%) and polar tuberculoid (TT) the most frequent in the Asio-Indian group (37.8%). LL and borderline lepromatous (BL) types of leprosy were significantly more frequent in patients over 45-years-old and in females (P less than 0.05), contributing to the higher rate of LL in the Arab cases. The mean lag time from symptoms onset to presentation to doctor was 9.4 (range 0-192) months, with lepromatous cases tending to present later than other types. The longest lag times occurred in Arab women with LL, suggesting that cultural influences may delay presentation of leprosy. The mean interval from presentation to diagnosis was 4.1 weeks. The mean latency from entry into Kuwait to diagnosis was 44.7 (range 0-180) months; which stresses the need for physicians to remain vigilant in considering leprosy, especially in any patient with dermatological, neurological or ophthalmic manifestations of disease.

Adolescent↗

High survival rate in childhood non-Hodgkin lymphoma without CNS involvement: results of BFM 95 study in Kuwait.

Non-Hodgkin lymphomas (NHL) in children are the second most common malignant tumors in Kuwait. Until 1995 the patients (pts) received institutional protocols. From October 1995 to September 2000 21 children with NHL were treated. Five children were treated by NHL BFM 90 protocol, 7 pts received NHL BFM 95 scheme, and 9 children underwent therapy abroad or according to different types of protocols. The results of a retrospective analysis of NHL BFM 95 protocol in Kuwait are reported. Seven patients diagnosed with NHL--group B: 3 children with Burkitt lymphoma (B-cell NHL) and group A: 4 children with lymphoblastic lymphoma (T-cell NHL)--were treated from October 1995 to September 2000 in the Kuwait Cancer Control Centre according to NHL BFM 95 protocol. Group B consisted of 2 girls and 1 boy; median age at diagnosis was 4 years 8 months, 2 pts classified as stage II and 1 pt as stage III. All patients were assigned to risk group R2. Median follow-up is 2 years 8 months. Group A included 1 girl and 3 boys; median age at diagnosis was 5 years 8 months, 1 pt classified as stage III and 3 pts as stage IV. All patients were assigned to IR group. Median follow-up is 3 years 6 months. In group B all 3 pts are in 1st CR; in group A 3 pts are in 1st CR and 1 pt having Li-Fraumani syndrome died after the 3rd relapse of disease during therapy. In both groups there was no toxic death, myelotoxicity WHO grade III-IV, hepatotoxicity WHO grade II-III. Treatment results of NHL BFM 95 study in our small group of patients are very optimistic. Six patients are in 1st CR and one died due to progression of disease. Despite the small group of patients, the results suggest that NHL BFM 95 protocol is highly effective and safe with regular supportive care.

Antineoplastic Combined Chemotherapy Protocols↗

155 vascular injuries: a retrospective study in Kuwait, 1992-2000.

OBJECTIVES: To audit the management of vascular trauma in Kuwait, 1992-2000. DESIGN: Retrospective open study. SETTING: Vascular surgery unit, teaching hospital, Kuwait. SUBJECTS: 155 patients with vascular injuries, most of which (n = 118) involved the extremities. 21 had neck injuries, 10 abdominal, and 6 chest. INTERVENTION: Revascularisation usually using the long saphenous vein in addition to direct repair or end-to-end anastomosis. MAIN OUTCOME: Morbidity (amputation) and mortality. RESULTS: Four lower limb grafts failed, two of which (2/69, 3%) required amputation. Overall, four patients died (3%), one of pulmonary embolism and 3 of severe injuries to major abdominal vessels. 3/10 patients with abdominal vascular trauma died. Mean (SD) follow up period was 4.4 (2) years. CONCLUSIONS: Civilian violence has increased in Kuwait. Vascular trauma to abdominal vessels is associated with high mortality. Autogenous saphenous vein forms an excellent conduit for revascularisation.

Abdominal Injuries↗

Regulatory end-point assessment of the consultation competence of family practice trainees in Kuwait.

BACKGROUND: No single approach to the regulatory assessment of global consultation competence has been shown to possess the required levels of validity, reliability and feasibility. OBJECTIVE: To evaluate the approach adopted in Kuwait to the regulatory end-point assessment of the global consultation competence of family practice trainees with particular reference to validity, reliability and feasibility. METHODS: Family practice trainees in Kuwait were individually and directly observed for 3 hours in consultation with a minimum of 10 patients by a pair of examiners. Performance was judged against the explicit criteria of consultation competence as contained in the Leicester Assessment Package (LAP). RESULTS: The marks independently allocated by the pairs of examiners to 126 trainees between 1994 and 2001 were within five percentage points on 91% of occasions. A reliability coefficient of 0.82 was achieved when two examiners independently marked candidates consulting with 10 real patients; this rose to 0.95 at the critical 50% pass-fail margin. The main sources of variance contributing to the reliability of marks allocated were candidate performance (42%) and the interaction of candidate performance across cases, i.e., case specificity (30%). The clinical challenges presented by the patients were judged by both examiners to be sufficient to enable performance to be assessed across the seven LAP consultation categories as follows: behaviour and relationship with patients (100% of consultations), interviewing/history taking (100%), record keeping (99%), patient management (99%), problem solving (98%), physical examination (95%), and anticipatory care (86%). Each assessment involved a pair of examiners and lasted approximately 3.5 hours. CONCLUSION: The Kuwait clinical examination achieves high content validity and authenticity as it uses direct observation of performance, validated and explicit criteria against which performance is judged, and real patient challenges. It can discriminate between different levels of consultation performance and satisfies the recognized reliability threshold for regulatory examinations (0.82 vs 0.80). Accordingly, we recommend the use of such an approach in the regulatory end-point assessment of the global consultation competence of trainees in family practice. Such an approach is more valid, and is likely to be more feasible, than simulated surgeries or the short-case OSCE format.

Family Practice↗

Heavy metals content of municipal wastewater and sludges in Kuwait.

Municipal wastewater may contain heavy metals, which are hazardous to the environment and humans. With stringent regulations concerning water reuse and sludge utilization in agriculture, there is a great need to determine levels of heavy metals in liquid wastes, sludges and agricultural crops. The state of Kuwait has programs to utilize waste sludge produced at wastewater treatment plants as soil conditioner and fertilizer for greenery and agricultural development projects and to reuse treated wastewater effluents in irrigation. The common metals found in Kuwait's raw wastewater and sludge are Cd, Cr, Cu, Hg, Ni, Pb, and Zn. The effects of accumulation of heavy metals in soil are long lasting and even permanent. In this study, the variations in the concentration levels of heavy metals were measured in wastewater and sludge produced at Ardiya municipal wastewater treatment plant in Kuwait. A relationship was observed between the concentrations of heavy metals in treated wastewater and sludge used for agriculture and the level of accumulated heavy metals found in residual tissues of some crops.

Agriculture↗

Ethnicity, nationality and health care accessibility in Kuwait: a study of hospital emergency room users.

In mid-1994, non-Kuwaiti expatriates constituted 61.7% of the total population of Kuwait (1.75 million). Despite this numerical majority, non-Kuwaitis exist as a social minority. Non-Kuwaitis may be grouped into three broad categories along ethnic/nationality lines into Bidoon (without nationality), Arabs, and Asians. The objective of this paper was to compare the relative accessibility of the various groups to health care services in Kuwait. The study is based on data collected as part of a survey of 2184 Emergency Room (ER) users in January-February 1993. All patients attending the hospital ERs between 7:30 am and 9:00 pm were interviewed about their reasons for coming to the ER instead of going to the primary health care (PHC) centres, as required. The major reason given was low accessibility of the PHCs. Compared to Kuwaiti nationals, 92% of whom were registered at the PHC centres, only 62% of the Arabs and 39% of the Asians were registered. Multiple logistic regression of the factors in registration indicated that nationality was the most important reason for lack of registration, with Asians only about one-quarter as likely to be registered as Kuwaitis. Also, people who had been in Kuwait for shorter durations (< 5 years) were less likely to be registered than the Kuwaiti nationals or expatriates who had been here for 10 years or longer. In the absence of registration at the PHC centre, the civil identification card (ID) may be used as a valid means to enter the health system. Among the Arabs and Asians, 22% and 29% did not have a civil ID card. Thus, for many expatriates, the hospital ER, which does not provide the necessary follow-up care is often the only source of health care available.

Arabs↗

End-stage renal disease and renal replacement therapy in Kuwait--epidemiological profile over the past 4 1/2 years.

Data on end-stage renal disease (ESRD) patients in Kuwait were collected retrospectively and prospectively starting in mid-1988. The study period covered 4 1/2 years from 1 January 1986 to 30 June 1990. Epidemiological characteristics of ESRD patients and their disposal by dialysis and transplantation were analysed and compared with previous reports from Kuwait, neighbouring countries, Europe, and USA. A total of 647 patients received renal replacement therapy (RRT) in Kuwait during the study period. This gave an incidence rate of 72 patients per year per million of population. The prevalence rate for patients on maintenance dialysis was 80.6 per million population in mid-1988. Nearly one-fifth of total patients (19.6%) were older than 60 years of age and one-third (30.8%) were identified as 'high risk' category. As for Kuwaiti nationals alone on RRT 29.7% were above 60 years of age and 44.2% were high-risk patients. We have noticed a steady decline in the number of patients who accepted continuous ambulatory peritonial dialysis (CAPD) for dialytic support. Chronic tubulointerstitial disease resulting from atrophic pyelonephritis was the leading cause of ESRD amongst both Kuwaiti nationals and expatriates. Though diabetic nephropathy was only the third leading cause of ESRD (14.7%) in the total population, it was more frequent (21.2%) among Kuwaitis. The gross mortality rate on dialysis was 14.7%. The major causes of death were related to cardiovascular diseases (60%) and sepsis (24.2%).(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗

The impact of Iraqi occupation on end-stage renal disease patients in Kuwait, 1990-1991.

This paper describes the impact of Iraqi invasion and occupation on 196 end-stage renal failure (ESRD) patients maintained on dialysis treatment in Kuwait. Seventeen patients were abroad on holidays at the time of invasion, 77 fled the country for safety, and the rest (102) remained in Kuwait. Nearly half of those patients who remained in Kuwait died during the period of occupation. The mortality rate was as high as 95% in the intermittent cycler peritoneal dialysis (IPD) patients and 41% in haemodialysis patients compared to only 12.7% for those who left the country for treatment. Failure to reach dialysis centres, sepsis, myocardial infarction, and cerebral haemorrhage were the major causes of death. Shortage of skilled nurses was the major detrimental factor which necessitated major policy changes in the treatment programme. Those were (1) restriction of haemodialysis treatment hours and (2) discontinuation of IPD and transfer of patients to continuous ambulatory peritoneal dialysis (CAPD). The incidence of new ESRD Kuwaiti patients entering dialysis programme during the occupation period and soon afterwards was only 37 per million Kuwaiti population compared to 60 per million in the previous years.

Humans↗

Hughes syndrome: a common problem in Kuwait hospitals.

The objective was to study antiphospholipid antibody syndrome (APS or Hughes syndrome) in two major teaching hospitals in Kuwait. patients with suspected Hughes syndrome were investigated with tests for anticardiolipin antibodies (aCL) and lupus anticoagulants (LAC) over 1 yr. Diagnosis was considered confirmed if significant levels of either or both antibodies with no obvious cause (primary), or with systemic lupus erythematosus (SLE) or SLE-like illness (including SLE serology) (secondary) were present. Twelve (37.5%; seven females, 58%) primary and 20 (62.5%; 18 females, 90%) secondary Hughes syndrome patients were seen during this period. patients were Kuwaiti, Middle-Eastern and North-African Arabs (29). Filipinos (2) and White (1). None were from the Indian subcontinent. The main presentation was thrombosis in 75% (arterial in 25% and venous in 50%), and recurrent abortions in 50% of married women. Haematological and dermatological manifestations were limited entirely to the secondary variety, seen in 25% and 19%, respectively. Clinical manifestations were severe, leading to death in one, intensive-care management in 31% and with partial or complete warfarin resistance or brittleness in 25%. Neurological/eye and cardiac manifestations were not seen, as these patients may be attending separate speciality hospitals for these diseases in Kuwait. The approximate prevalence of this syndrome was 2.66/1000 admissions in medical wards. Projected to the total referral areas of the two hospitals, an approximate figure of 52 patients/million population/year was obtained. Hughes syndrome was a common problem among Arabs, Filipinos and possibly Whites in Kuwait. Its manifestations were severe, often requiring intensive-care management, and in one case it was fatal. Patients from the Indian subcontinent were conspicuous by their absence, despite the fact that they were well represented in all other rheumatic disease groups. Ethnic and/or geographical factors could be important in this syndrome. To the best of our knowledge, this is the first report of Hughes syndrome from the Middle East.

Adolescent↗