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Articles 241 - 270 of 293
Full-Text Articles in Medical Specialties
Kutibu Majeraha, Kutia Matumaini: Ushirikiano Wa Watanzania Dhidi Ya Fistula Obstetrikia, Thoraya Ahmed Obaid, Erica Chong
Kutibu Majeraha, Kutia Matumaini: Ushirikiano Wa Watanzania Dhidi Ya Fistula Obstetrikia, Thoraya Ahmed Obaid, Erica Chong
Poverty, Gender, and Youth
This edition of Quality/Calidad/Qualité describes a partnership formed to combat obstetric fistula in Tanzania. The Bugando Medical Center, the Women’s Dignity Project, the Tanzania Midwives Association, and the government cooperated on an extensive program for surgical repair, prevention, and policy research and activities. Lessons learned: 1) Fistula programs need to address social as well as medical issues. 2) Most repairs are successful, making an enormous difference in women’s lives. 3) Relatively little funding is necessary to start up a fistula program. 4) Fistula programs are vehicles for broader conversations about gender and poverty.
Hairy Cell Leukemia: Clinical Presentation And Long Term Follow Up After Treatment With 2-Chlorodeoxyadenosine (2-Cda), Fareena Bilwani, Mohammad Usman, Salman Adil, Ghulam N. Kakepoto, Mohammad Khurshid
Hairy Cell Leukemia: Clinical Presentation And Long Term Follow Up After Treatment With 2-Chlorodeoxyadenosine (2-Cda), Fareena Bilwani, Mohammad Usman, Salman Adil, Ghulam N. Kakepoto, Mohammad Khurshid
Department of Pathology and Laboratory Medicine
The aim of the study was to the clinical features and long term follow up after treatment with Cladarbine in a tertiary care hospital. Seven patients with hairy cell leukemia were diagnosed between January 1990 till December 2003. Diagnosis in all the patients was established by bone marrow aspirates and trephine biopsy along with TRAP. In two patients the diagnosis was supplemented by flowcytometry and in another two patients by splenectomy. Six patients were male while one was female. Mean age was 47.7 years (range 36-64). Most common presenting features were pallor and weakness (n=5). All patients had splenomegaly. Blood …
Sclerotherapy Plus Octreotide Versus Sclerotherapy Alone In The Management Of Gastro-Oesophageal Variceal Hemorrhage, Hasnain A. Shah, Khalid Mumtaz, Wasim Jafri, Shahab Abid, Saeed Hamid, Ashfaq Ahmad, Zaigham Abbas
Sclerotherapy Plus Octreotide Versus Sclerotherapy Alone In The Management Of Gastro-Oesophageal Variceal Hemorrhage, Hasnain A. Shah, Khalid Mumtaz, Wasim Jafri, Shahab Abid, Saeed Hamid, Ashfaq Ahmad, Zaigham Abbas
Section of Gastroenterology
Background: There are different ways for controlling oesophageal variceal bleed which include pharmacological and endoscopic methods. In this study we compare efficacy of octreotide (50 g/hr for 48 hours) combined with sclerotherapy versus sclerotherapy alone in patients with acute bleeding from gastro-oesophageal varices (GOV).Methods: It was a randomized clinical controlled trial conducted at Aga Khan University Hospital, Karachi, from January 1997 to December 1998. We evaluated the role of octreotide (50 g/hr for 48 hours) combined with sclerotherapy versus sclerotherapy alone in a total of 105 adult cirrhotic patients who had acute bleeding from GOV. Patients were assigned to receive …
Manuscripts Categorization And Their Accreditation, Jamshed Akhtar, Saba Sohail
Manuscripts Categorization And Their Accreditation, Jamshed Akhtar, Saba Sohail
Department of Radiology
No abstract provided.
Characterization Of The Zona Incerta, Heather Joyce Green
Characterization Of The Zona Incerta, Heather Joyce Green
Theses and Dissertations
Parkinson's Disease affects more than 1 million people in the United States with 60,000 new cases being diagnosed each year. Currently, there is no cure for Parkinson's Disease, but there are several treatment options available. Currently the most popular surgical option is Deep Brain Stimulation. Microelectrode recording helps identify nuclei as the microelectrode passes through them. While the firing frequencies of the target nuclei are well defined, other nuclei are not. This study will attempt to characterize the Zona Incerta, which is the structure directly above the Subthalamic Nucleus, a target nucleus. Characterization of the firing frequency of the Zona …
Predicting Postoperative Cardio-Pulmonary Complications By A Test Of Stair Climbing, Nawal Salahuddin, Saulat H. Fatimi, Shehzad Huda, Mohammad Islam, Azam Shafquat
Predicting Postoperative Cardio-Pulmonary Complications By A Test Of Stair Climbing, Nawal Salahuddin, Saulat H. Fatimi, Shehzad Huda, Mohammad Islam, Azam Shafquat
Section of Cardiothoracic Surgery
OBJECTIVE: To assess whether a test of stair climbing ability could be used to predict the risk of developing postoperative cardiopulmonary complications in patients undergoing general anesthesia.
DESIGN: Cohort study.
PLACE AND DURATION OF STUDY: The Aga Khan University Hospital, Karachi. The duration of the study was from December 2003 to December 2004. PATIENTS AND METHODS: This study was carried out on consecutive, adult patients presenting for elective thoracic or abdominal surgery under general anesthesia. Pre-operatively, patients were asked to climb a standard staircase. Number of steps climbed was recorded. Those unable to climb stairs due to debilitating …
Conversion From Laparoscopic To Open Cholecystectomy: Multivariate Analysis Of Preoperative Risk Factors, M Tayeb, S A. Raza, M R. Khan, R Azami
Conversion From Laparoscopic To Open Cholecystectomy: Multivariate Analysis Of Preoperative Risk Factors, M Tayeb, S A. Raza, M R. Khan, R Azami
Department of Surgery Docs
Background: Laparoscopic cholecystectomy has become the gold standard in the treatment of symptomatic cholelithiasis. Some patients require conversion to open surgery and several preoperative variables have been identified as risk factors that are helpful in predicting the probability of conversion. However, there is a need to devise a risk-scoring system based on the identified risk factors to (a) predict the risk of conversion preoperatively for selected patients, (b) prepare the patient psychologically, (c) arrange operating schedules accordingly, and (d) minimize the procedure-related cost and help overcome financial constraints, which is a significant problem in developing countries.AIM: This study was aimed …
Familial Homocystinuria, F Bilwan, Na Syed, M Usman, Mohammad Khurshid
Familial Homocystinuria, F Bilwan, Na Syed, M Usman, Mohammad Khurshid
Department of Pathology and Laboratory Medicine
Two cases of siblings diagnosed as cases of familial homocystinuria are reported. Both the cases have classical presentation of familial homocystinuria including history of dislocation of lens of the right eye. Brother had history of psychomotor retardation while sister had a significant history of deep vein thrombosis. Levels of plasma homocysteine were elevated and urinary homocysteine was positive in both the cases.
Healing During Physician-Patient Consultation, Waris Qidwai, Ss Ali, S Ayub, S Ayub
Healing During Physician-Patient Consultation, Waris Qidwai, Ss Ali, S Ayub, S Ayub
Department of Family Medicine
OBJECTIVE: To determine the patient perceptions regarding healing during a physician-patient consultation.
DESIGN: A questionnaire-based survey.
PLACE AND DURATION OF STUDY: Family Practice Center of the Aga Khan University Hospital, Karachi, Pakistan, in June 2004.
PATIENTS AND METHODS: A questionnaire was designed that included the demographic profile of patients comprising age, gender, education and occupation as well as questions in line with the study objective. It was administered to 111 patients, visiting outpatient department of the hospital. Participants were explained the study objective, a written consent was taken and full confidentiality was assured.
RESULTS: The mean age of …
Patient Expectations From An Emergency Medical Service, Waris Qidwai, Ss Ali, M Baqi, S Ayub
Patient Expectations From An Emergency Medical Service, Waris Qidwai, Ss Ali, M Baqi, S Ayub
Department of Family Medicine
BACKGROUND: Patient expectation survey at the Emergency Medical Services can improve patient satisfaction. A need was established to conduct such a survey in order to recommend its use as a quality improvement tool.
METHODS: The study was conducted on patients visiting the Emergency Medical Services, Aga Khan University, Karachi. A questionnaire was used to collect information on the demographic profile, and expectations of patients. The ethical requirements for conducting the study were met.
RESULTS: A hundred patients were surveyed. The majority was relatively young, married men and women, well educated and better socio-economically placed. The majority of the …
Prevalence Of Obesity And Lack Of Physical Activity Among Kentucky Adolescents, Hatim A. Omar, Kristin Rager
Prevalence Of Obesity And Lack Of Physical Activity Among Kentucky Adolescents, Hatim A. Omar, Kristin Rager
Pediatrics Faculty Publications
Lack of physical activity and overweight status continues to be a significant health problem in the United States. To assess the actual prevalence of these problems, we reviewed data from the School-based Health Promotion Centers in one middle school, and one High school in central Kentucky. A total of 232 6th graders and 607 9th graders were included. A total of 92% of 6th graders and 45% of 9th graders reported complete lack of regular exercise. 37% of 9th graders and 59% of 6th graders had inappropriate nutrition, 47% of 9th graders and 33% of 6th graders had Body Mass …
Enhancing The Geriatric Competence Of Urologic Nurses, Karen A. Karlowicz
Enhancing The Geriatric Competence Of Urologic Nurses, Karen A. Karlowicz
Ellmer School of Nursing Faculty Publications
Editorial. Provides strategies for enhancing the geriatric competence of urologic nurses. Improvements in nursing practice and in other health care professions; Considerations in caring for older adults; Implications for nursing practice.
A Comparison Of Esomeprazole And Lansoprazole For Control Of Intragastric Ph In Patients With Symptoms Of Gastro-Oesophageal Reflux Disease, D. A. Johnson, T. Stacy, M. Ryan, T. Wootton, J. Willia, K. Hornbuckle, W. Brooks, M. Doviak
A Comparison Of Esomeprazole And Lansoprazole For Control Of Intragastric Ph In Patients With Symptoms Of Gastro-Oesophageal Reflux Disease, D. A. Johnson, T. Stacy, M. Ryan, T. Wootton, J. Willia, K. Hornbuckle, W. Brooks, M. Doviak
Mathematics & Statistics Faculty Publications
Background: Intragastric acid suppression is the most direct measure of the pharmacodynamic efficacy of proton pump inhibitors, which are the most effective drugs for acid-related diseases.
Aim: To compare the effectiveness of once and twice daily dosing of lansoprazole and esomeprazole in controlling intragastric acidity ( target gastric pH > 4.0) over a 24-hour period.
Methods: In an open-label, two-way crossover study, 45 Helicobacter pylori-negative patients with gastro-oesophageal reflux disease were randomized to receive one of two regimens: 30 mg lansoprazole or esomeprazole 40 mg once daily. Intragastric pH was assessed by 24-hour pH monitoring on day 5 of each regimen. …
Symptoms Of Gastro-Oesophageal Reflux Disease And The Severity Of Obstructive Sleep Apnoea Syndrome Are Not Related In Sleep Disorders Center Patients, H.-N. Kim, R. D. Vorona, M. P. Winn, M. Doviak, D. A. Johnson, J. Catesby Ware
Symptoms Of Gastro-Oesophageal Reflux Disease And The Severity Of Obstructive Sleep Apnoea Syndrome Are Not Related In Sleep Disorders Center Patients, H.-N. Kim, R. D. Vorona, M. P. Winn, M. Doviak, D. A. Johnson, J. Catesby Ware
Mathematics & Statistics Faculty Publications
Background: Studies suggest obstructive sleep apnea syndrome (OSAS) frequently manifests in patients with gastroesophageal reflux disease (GERD) and that there may be a causal relationship.
Aim: To determine the relationship between OSAS and symptoms of GERD.
Methods: Consecutive patients referred to the Sleep Disorders Center (SDC) 18 years and older with polysomnographically defined OSAS were evaluated prospectively for GERD using a validated symptoms questionnaire. The GERD and OSAS relationship was assessed by 1) determining frequency of GERD in patients with and without OSAS; 2) ascertaining the relationship between OSAS severity categories and presence of GERD; 3) examining GERD score in …
Continuity Of Patient Care Among Family Practice Patients At A Teaching Hospital, Waris Qidwai, J Rehman, M Khan, Iqbal Azam
Continuity Of Patient Care Among Family Practice Patients At A Teaching Hospital, Waris Qidwai, J Rehman, M Khan, Iqbal Azam
Department of Family Medicine
No abstract provided.
Life Style Related Risk Factors For Cardiovascular Disease Among Patients At A Teaching Hospital In Karachi, Waris Qidwai, Ar Mangi, R Bux
Life Style Related Risk Factors For Cardiovascular Disease Among Patients At A Teaching Hospital In Karachi, Waris Qidwai, Ar Mangi, R Bux
Department of Family Medicine
BACKGROUND: Cardiovascular disease is a leading cause for morbidity and mortality all over the world. It is important to study life style related, modifiable cardiovascular risk factors among patients, in order to devise preventive strategies.
METHODS: We surveyed family practice patients visiting the out-patient clinics of Aga Khan University Hospital, Karachi. The interview was questionnaire-based and recorded the demographic profile of the patients, in addition to information on life style related cardiovascular risk factors. The ethical requirements for the study were met. SPSS computer software was used for data management. RESULTS: Fifty patients were surveyed and included …
Characteristics Of Smokers And Their Knowledge About Smoking At A Teaching Hospital In Karachi, Waris Qidwai, N Zahid
Characteristics Of Smokers And Their Knowledge About Smoking At A Teaching Hospital In Karachi, Waris Qidwai, N Zahid
Department of Family Medicine
Objective: To study the characteristics of smokers and their knowledge about smoking, among Family Practice Patients, at a teaching hospital in Karachi, Pakistan. Main outcome measures: Age at starting smoking, duration and number of cigarettes smoked, started smoking under influence of friends, colleagues, family members or self motivation, number of friends and colleagues who smoked, whether smoking is unhealthy, and actual chance of harm to an individual due to smoking is very rare or not.
Results: One hundred patients who visited Family Practice Center were interviewed. Sixty one percent were young married men, well educated and either student, …
Paediatric Palliative And Supportive Care: Caring For Life: The Needs Of Children And Families In Western Australia, Leanne Monterosso, Linda Kristjanson, Marianne Phillips, Sue Rowell
Paediatric Palliative And Supportive Care: Caring For Life: The Needs Of Children And Families In Western Australia, Leanne Monterosso, Linda Kristjanson, Marianne Phillips, Sue Rowell
Research outputs pre 2011
Palliative care is the relief of symptoms, regardless of their impact on the underlying disease process. The philosophical underpinning of current international paediatric palliative and supportive care models is that palliative and supportive care should be offered to all children with life threatening or chronic illnesses/disabilities with complex care needs. This approach allows the integration of cure-directed treatment and palliative care. allowing children to benefit from both philosophies of care. In Australia, there is increasing recognition of the need for the development of appropriate paediatric palliative care services, especially in Western Australia where supportive care services for children with life-limiting …
Childhood And Adolescent Obesity: Nationwide Pediatric Healthcare Provider Practices And Their Role In Treatment And Prevention Of The Obesity Epidemic, Alison Farley
MPA/MPP/MPFM Capstone Projects
The purpose of this research is to explore screening and treatment patterns as well as the underlying provider confidence in their decision-making related to the overweight and obese child and adolescent patient. The screening and treatment of obesity in the child and adolescent population are affected by complex social implications and physical side effects. Without a clear consensus on screening, diagnosis and alternative treatment plans, healthcare providers will not maximize the opportunity to provide primary and secondary prevention to the growing epidemic.
Statistical analysis of secondary survey data was conducted to explore screening and treatment patterns as well as the …
A Systematic Review Of Existing National Priorities For Child Health Research In Sub-Saharan Africa, George Swingler, James Irlam, William Macharia, Felix Tietche, Martin Meremikwu
A Systematic Review Of Existing National Priorities For Child Health Research In Sub-Saharan Africa, George Swingler, James Irlam, William Macharia, Felix Tietche, Martin Meremikwu
Paediatrics and Child Health, East Africa
Background: We systematically reviewed existing national child health research priorities in Sub-Saharan Africa, and the processes used to determine them.
Methods: Collaborators from a purposive sample of 20 WHO-AFRO Region countries, assisted by key informants from a range of governmental, non-governmental, research and funding organisations and universities, identified and located potentially eligible prioritisation documents. Included documents were those published between 1990 and 2002 from national or nationally accredited institutions describing national health research priorities for child health, alone or as part of a broader report in which children were a clearly identifiable group. Laboratory, clinical, public health and policy research …
Management Outcome Of Residual Common Bile Duct Stones At Aga Khan University Hospital, Muhammad Rizwan Khan, Sameera Naureen, Dildar Hussain, Rizwan Azami
Management Outcome Of Residual Common Bile Duct Stones At Aga Khan University Hospital, Muhammad Rizwan Khan, Sameera Naureen, Dildar Hussain, Rizwan Azami
Department of Surgery Docs
Background: The frequency of residual common bile duct (CBD) stones in patients with previous cholecystectomy ranges from 2-10%, and a minimally invasive approach is generally recommended for these patients. This study reviews the experience in the management of residual CBD stones at the Aga Khan University Hospital.Methods: All adult patients diagnosed to have residual CBD stones, from 1993 to 2001, were identified and analyzed in terms of the treatment modality utilized and its associated complications. The role of endoscopic sphincterotomy was particularly analyzed in our set-up.Results: The study population consisted of 66 patients. The mean age was 52 (range:18-84 years) …
The Evaluation Of Rectal Bleeding In Adults, Elizabeth Allen, Christina Nicolaidis, Mark Helfand
The Evaluation Of Rectal Bleeding In Adults, Elizabeth Allen, Christina Nicolaidis, Mark Helfand
School of Social Work Faculty Publications and Presentations
Colon cancer is the third leading cause of cancer-related death in this country.5 The majority of medical societies recommend some form of colon cancer screening for asymptomatic adult patients over age 50. The evaluation of rectal bleeding is different from screening because the risk of serious disease is higher and it is unclear whether early diagnosis and treatment of serious disease results in improved mortality once gross bleeding has occurred. The optimal evaluation strategy for rectal bleeding is unknown. Neither historical information nor the presence or absence of hemorrhoids has been shown to reliably differentiate benign from serious disease.6–11 Fecal …
Global Gene Expression Profiling Of Cells Overexpressing Smc3., Giancarlo Ghiselli, Chang-Gong Liu
Global Gene Expression Profiling Of Cells Overexpressing Smc3., Giancarlo Ghiselli, Chang-Gong Liu
Department of Microbiology and Immunology Faculty Papers
BACKGROUND: The Structural Maintenance of Chromosome 3 protein (SMC3) plays an essential role during the sister chromatid separation, is involved in DNA repair and recombination and participates in microtubule-mediated intracellular transport. SMC3 is frequently elevated in human colon carcinoma and overexpression of the protein transforms murine NIH3T3 fibroblasts. In order to gain insight into the mechanism of SMC3-mediated tumorigenesis a gene expression profiling was performed on human 293 cells line stably overexpressing SMC3. RESULTS: Biotinylated complementary RNA (cRNA) was used for hybridization of a cDNAmicroarray chip harboring 18,861 65-mer oligos derived from the published dEST sequences. After filtering, the hybridization …
Frequency Of Irregular Red Cell Alloantibodies In Patients With Thalassemia Major: A Bicenter Study, Fareena Bilwani, Ghulam Nabi, Salman Adil, Mohammad Usman, Farrukh Hassan, Mohammad Khurshid
Frequency Of Irregular Red Cell Alloantibodies In Patients With Thalassemia Major: A Bicenter Study, Fareena Bilwani, Ghulam Nabi, Salman Adil, Mohammad Usman, Farrukh Hassan, Mohammad Khurshid
Department of Pathology and Laboratory Medicine
Objective: To provide frequency and distribution pattern of various types of irregular red cell alloantibodies in patients with thalassemia major.
Methods: This is a descriptive study conducted at two centers from January to December 2001. Purposive sampling was done and all patients diagnosed to have thalassemia major were included in the study. Antibody identification was carried out on serum employing commercial two-cell panel using standardized blood bank methods. If patients were found to have an irregular red cell alloantibody then the antibody identification was performed using 16 panel cells. Results: A total of ninety-seven patients were included …
Anaphylactic Reaction After Intramuscular Injection Of Cyanocobalamin (Vitamin B12): A Case Report, Fareena Bilwani, Salman Adil, Usman Sheikh, Ayesha Humera, Mohammad Khurshid
Anaphylactic Reaction After Intramuscular Injection Of Cyanocobalamin (Vitamin B12): A Case Report, Fareena Bilwani, Salman Adil, Usman Sheikh, Ayesha Humera, Mohammad Khurshid
Department of Pathology and Laboratory Medicine
We report a case of anaphylactic reaction to intramuscular injection of cyanocobalamin. This 52-year-old lady was diagnosed as a case of megaloblastic anemia secondary to dietary vitamin B12 deficiency. She had severe anaphylactic reaction after the parenteral administration of cyanocobalamine. Later she received oral vitamin B12 with no adverse effects. The purpose of this case report is to draw attention to the hypersensitive reaction to injectable vitamin B12, which is rarely seen. This could be due to sensitization to the vitamin B12 molecule itself or an IgE mediated reaction. We concluded that anaphylactic reaction to vitamin B12 is a rare …
Frequency Of Fab Subtypes In Acute Myeloid Leukemia Patients At Aga Khan University Hospital Karachi, Mahadev Sajanmal Harani, Salman Adil, Mohammad Usman Shaikh, G N Kakepoto, Mohammad Khurshid
Frequency Of Fab Subtypes In Acute Myeloid Leukemia Patients At Aga Khan University Hospital Karachi, Mahadev Sajanmal Harani, Salman Adil, Mohammad Usman Shaikh, G N Kakepoto, Mohammad Khurshid
Department of Pathology and Laboratory Medicine
BACKGROUND: Acute myeloid leukemia (AML) is a heterogeneous disease. Therefore, various parameters are needed to classify this disease into subtypes, so that specific treatment approaches can be utilized effectively. The commonly used method for diagnosis and classification is based on FAB criteria using morphology and cytochemical stains. For some of the categories, immunophenotyping is necessary. The aim of present study is to determine the frequency of various sub types in acute myeloid leukemia using FAB criteria in our population. This will aid in the correct diagnosis of acute leukemia and hence proper management of the patients.
MATERIALS AND METHODS …
Cephalosporin Resistant Shigella Flexneri From A Clinical Isolate--A Rare Finding, Nasim Sabir, Afia Zafar
Cephalosporin Resistant Shigella Flexneri From A Clinical Isolate--A Rare Finding, Nasim Sabir, Afia Zafar
Department of Pathology and Laboratory Medicine
Shigellosis is an important public health problem, especially in developing countries. Antibiotic treatment of dysentery aimed at resolving diarrhea or reducing its duration, and to prevent transmission to other close contacts. Isolates with resistance to first line drugs have been reported throughout world, third generation cephalosporins and quinolones are mainstay of treatment. Shigella flexneri resistant to third generation cephalosporins in a clinical isolate is a rare finding, and this has been reported for the first time in Pakistan.
Frequency And Sensitivity Pattern Of Extended Spectrum Beta Lactamase Producing Isolates In A Tertiary Care Hospital Laboratory Of Pakistan, Kauser Jabeen, Afia Zafar, Rumina Hasan
Frequency And Sensitivity Pattern Of Extended Spectrum Beta Lactamase Producing Isolates In A Tertiary Care Hospital Laboratory Of Pakistan, Kauser Jabeen, Afia Zafar, Rumina Hasan
Department of Pathology and Laboratory Medicine
Objective: To determine frequency, distribution and sensitivity pattern of Extended-Spectrum ß Lactamase (EBSL) producing organism at a tertiary care hospital in Pakistan.
Methods: All members of enterobacteriacae isolated between April and August 2002 were studied. Isolates were speciated according to standard biochemical tests. Susceptibility testing was performed by Kirby-Bauer method. ESBL was detected using double disc method using cefotaxime versus cefotaxime plus clavulanate according to NCCLS. Statistical analysis was performed by SPSS version 10. Test of significance were calculated using chi-square test.
Results: During the study period, 1137/2840 (40%) of the isolates tested were found to be ESBL producing. …
Nalidixic Acid Screening Test In Detection Of Decreased Fluoroquinolone Susceptibility In Salmonella Typhi Isolated From Blood, Afia Zafar, Ng Ibrahim, T Ahsan, Z Abbas, A Zaidi, Rumina Hasan
Nalidixic Acid Screening Test In Detection Of Decreased Fluoroquinolone Susceptibility In Salmonella Typhi Isolated From Blood, Afia Zafar, Ng Ibrahim, T Ahsan, Z Abbas, A Zaidi, Rumina Hasan
Department of Pathology and Laboratory Medicine
OBJECTIVE: To determine the validity of nalidixic acid screening test in the detection of high MICs of fluoroquinolone against Salmonella(S.) typhi isolated from blood and correlate zone diameters of ofloxacin with that of MIC value for nalidixic acid sensitive and resistant strains.
DESIGN: Cross-sectional analytical study.
PLACE AND DURATION OF STUDY: Clinical Microbiology Laboratory of the Aga Khan Hospital, Karachi from January 2002 to December 2003.
METHODS: Two hundred S. typhi isolates from blood were included for nalidixic acid screening and ofloxacin susceptibility. Antibiotic susceptibilities for both the antibiotics were obtained by disc diffusion method whereas MICs were determined …
Vi Antigen Expression In Salmonella Enterica Serovar Typhi Clinical Isolates From Pakistan, John Wain, Deborah House, Afia Zafar, Stephen Baker, Satheesh Nair, Claire Kidgell, Zulfiqar Bhutta, Gordon Dougan, Rumina Hasan
Vi Antigen Expression In Salmonella Enterica Serovar Typhi Clinical Isolates From Pakistan, John Wain, Deborah House, Afia Zafar, Stephen Baker, Satheesh Nair, Claire Kidgell, Zulfiqar Bhutta, Gordon Dougan, Rumina Hasan
Department of Pathology and Laboratory Medicine
The accurate identification of Salmonella enterica subsp. enterica serovar Typhi variants that fail to express the capsular polysaccharide, Vi, is an important and much discussed issue for medical microbiology. We have tested a multiplex PCR method which shows the presence or absence of the genetic locus required for Vi expression. Of 2,222 Salmonella serovar Typhi clinical isolates collected from patients' blood over a 4-year period in a region of Pakistan where typhoid is endemic, 12 tested negative for Vi expression by serological agglutination. However, only 1 of these 12 was Vi negative by the multiplex PCR method. This result was …