Research and developing countries: hopes and hypes

The paper outlines the universal problem of ensuring ethical practices in human subject research, and focuses on specific difficulties faced in the developing world with particular reference to Pakistan. It discusses the influence of traditional and hierarchical social norms of physician-patient relationships in heightening these problems. Two emerging issues of specific concern in Pakistan are described: an exponential rise in multinational clinical drug trials, and commercial ventures offering unproven stem cell "therapy" for all kinds of diseases. The importance of introducing ethical practices in research within the context of local cultural and socioeconomic realities is highlighted

Families, patients, and physicians in medical decisionmaking: a Pakistani perspective.

KIE: In Pakistan, as in many non-Western cultures, decisions about a patient's health care are often made by the family or the doctor. For doctors educated in the West, the Pakistani approach requires striking a balance between preserving indigenous values and carving out room for patients to participate in their medical decisions. (HCR)^ieng

Amebic liver abscess: spare the knife but save the child.

BACKGROUND/PURPOSE: Amebic liver abscess (ALA), the most common extraintestinal manifestation of infection with Entameba histolytica, carries significant morbidity and mortality in the pediatric age group. The efficacy of metronidazole in the treatment of ALA is well established, but the role of surgical intervention remains controversial. Many investigators still advocate aggressive surgical therapy for complicated and ruptured ALA. Reports regarding management of ALA in children are sparse and deal with small numbers of patients. The objective of this study was to assess the effectiveness of parenteral metronidazole combined with judicious aspiration of ALA in obviating the need for surgical intervention. METHODS: The medical records of all children admitted with the diagnosis of ALA between 1986 and 1997 to the Aga Khan University Hospital were reviewed retrospectively. The diagnosis of ALA was confirmed in 48 patients by an ultrasound scan together with elevated indirect hemagglutination (IHA) titres (>250). Ages ranged from 3 weeks to 14.5 years. RESULTS: Thirty-seven (75%) children were below the fifth percentile for height and weight, and 45 (93.7%) presented with a hemoglobin level of less than 10.0 g/dL. Comorbid factors included pulmonary tuberculosis (n = 2, chicken pox (n = 1), tetralogy of Fallot (n = 1), and thalassemia major (n = 2). There was a mean delay of 13 days before presentation to the hospital. All patients were treated with parenteral metronidazole and broad-spectrum antibiotics. The latter were discontinued on confirmation of the diagnosis. The duration of treatment with metronidazole ranged from 2 to 5 weeks. Percutaneous aspiration of the ALA was performed under ultrasound guidance using sedation in 28 patients for one or more of the following indications; ALA greater than 7.0 cms (n = 20), left lobe involvement (n = 8), and no response after 48 hours of medical therapy (n = 6). Nine patients required more than one aspiration. One patient with peritoneal rupture of the ALA additionally underwent percutaneous aspiration of the peritoneal cavity under ultrasound guidance. One patient required insertion of a chest tube after rupture of the ALA into the right pleural cavity, and another underwent urgent bronchoscopy after rupture of the abscess into the tracheobronchial tree. The hepatobronchial fistula closed spontaneously with medical therapy. No patient required open surgical drainage, and all recovered without relapse. The mean duration of hospitalization was 12 days. CONCLUSION: Our experience suggests that parenteral metronidazole combined with timely aspiration of the abscess can obviate the need for surgical intervention in large and complicated ALA even in malnourished children who present late for treatment.

Invasive retroperitoneal infection due to Basidiobolus ranarum with response to potassium iodide--case report and review of the literature.

We report a case of invasive retroperitoneal zygomycotic infection caused by Basidiobolus ranarum in a healthy 8-year-old boy. The youngster responded dramatically to potassium iodide. The clinical and pathological features are reviewed to highlight the problems encountered in the management of this rare infection.

Malignant abdominal tumors in children.

The medical records of 53 patients between the ages of 1 and 18 years, with malignant abdominal tumors seen between 1987 and 1993 were reviewed. Wilms' tumor was the most common tumor constituting 28.3% of all cases. The others included Non- Hodgkin's lymphomas (20.8%), neuroblastomas (11.3%), rhabdomyosarcomas, germ cell tumors 9.4% each and a miscellaneous group. Majority of patients (60.3%) were under 5 years of age. The male to female ratio was 1:1. Among 15 patients with Wilms' tumor, majority (46.7%) had stage III tumors at presentation and all but one patient, were referred to our Hospital more than a month following initiation of their symptoms. In contrast, 5 out of 7 patients with Stage I and II tumors were seen within the first month of their symptoms. The commonly utilized techniques to aid diagnosis were ultrasonography and computerized tomography scan and the common treatment modality was a combination of surgery and chemotherapy. For Wilms' tumor, the mean follow-up was 1 year and nine months, the survival rate was 93.3% and there were no recurrences. With early diagnosis and multimodality treatment, the survival rates for childhood malignancies can be greatly improved.

Pediatric urolithiasis: to cut or not to cut.

Urolithiasis is a major source of morbidity in children of the third world. Since its advent in 1982 and despite uncertainties about the long-term effects on the kidney, extracorporeal shock wave lithotripsy (ESWL) has rapidly replaced traditional surgery in the management of this condition. A retrospective study was conducted to compare the outcome of ESWL with that of open surgery in the management of paediatric urolithiasis in a single institution between November 1988 and December 1991. Emphasis was placed on the rate of stone clearance, complications, duration of follow-up, and cost of treatment of each modality. A total of 83 patients under 14 years of age underwent management of 101 stones; the stones were located in the kidneys (63), ureters (13), or bladder (25). Thirty-one patients who enrolled directly through the Lithotripsy Clinic underwent a total of 65 ESWL sessions for 44 calculi (mean, 2.1 sessions per patient). The overall stone clearance rate was 82%, with an 83% clearance rate for renal stones. There were three failures. Nine patients did not return after the first ESWL session, and by the end of 6 months, 93.5% were lost to follow-up. The cost of ESWL ranged from $600 to $1,000 (mean, $780). Fifty-two children were managed through the Pediatric Surgery Clinic and underwent open surgery (57 stones). The overall stone clearance rate was 96%, with a clearance of 88% for renal calculi. There were two wound infections and no deaths. All patients returned for the first follow-up visit, but by the end of 6 months, only 34.5% were available for follow-up. The total cost of treatment ranged from $520 to $900 (mean, $580). The authors believe that with the present level of knowledge, use of the lithotriptor should be restricted to children with small stones and/or those for whom long-term follow-up is possible.

Amebic liver abscess in children.

Although amebic liver abscess can be a cause of significant morbidity and mortality in all ages, there are few reports dealing with this entity in children. Twenty-four children with amebic liver abscess, ages ranging between 3 weeks and 14.5 years, were managed at the Aga Khan University Hospital, Karachi, Pakistan, between November, 1987, and October, 1992. The most frequent presentation was high grade fever and right upper quadrant pain, associated with tender hepatomegaly, leukocytosis and an elevated erythrocyte sedimentation rate. The diagnosis was confirmed by elevated indirect hemagglutination titers and ultrasonography of the liver. Unlike the experience in adult patients none of the patients had concomitant jaundice, and significant derangement of liver enzymes was unusual. The abscesses were likely to be solitary (22 of 24 patients). There were no deaths despite a mean delay of 15 days before presentation to our hospital. A high index of suspicion, early institution of metronidazole therapy and aspiration of abscesses with potential to rupture are believed to have contributed to the better outcome in these children when compared with results in previous reports.

Penile constrictive band injury.

Penile strangulation caused by a thread or human hair is an uncommon cause of urethral injury described in paediatric practice. Five children presented with this entity to the Aga Khan University Hospital, Karachi between August, 1991 and August, 1992. Three children had uneventful recoveries after removal of the constricting agent. Two patients developed urethrocutaneous fistulae and partial amputation of the penis because of late presentation. Early recognition and removal of the constricting agent is necessary to prevent serious complications.

The abdominal cocoon--an unusual cause of intestinal obstruction in adolescents.

The abdominal cocoon is a rare cause of intestinal obstruction in adolescent girls caused by encasement of the small intestine in fibrous tissue. Only 15 cases have been reported in the English literature so far. This is a report of another two patients managed at the Aga Khan University Hospital. The correct diagnosis is often not suspected, resulting in delays in the treatment of this condition. Following simple surgical release of the entrapped bowel, these patients do well.

Ethical dilemmas of health care in the developing nations.

Limited resources, widespread poverty, and the absence of health insurance pose daily ethical problems for Third World physicians, who must balance their roles as individual patient advocates against a desire to provide health care to the greatest number of children. Pakistan has a per capita income of Rs. 7,220 (US$ 380) per year, or Rs. 800 (US$ 32) per month. The annual population growth of the country is 3.1%, and approximately 360,000 infants are born each year in Karachi, the largest city in the country. The Aga Khan University Hospital, a private teaching institution, is the only hospital in Karachi with a Level III Neonatal Intensive Care Unit (NICU). The financial and medical data of 200 infants admitted to the NICU in 1988 were reviewed retrospectively, and compared with those of two specific subgroups. (1) Among 15 infants who underwent surgical intervention, the average total cost of hospitalization was Rs. 36,040 (US$ 1,900) per patient, with an average daily cost of Rs. 923 (US$ 49). The longest hospital stay was 6 months, for a child who had total colonic aganglionosis associated with a short gut syndrome. There were two deaths in this group. (2) Of the 21 premature neonates admitted having Idiopathic Respiratory Distress Syndrome (IRDS) during this period, the total hospitalization cost per patient was Rs. 23,260 (US$ 788), with a daily cost of Rs. 1,050 (US$ 55). Eleven patients required ventilatory support. There were 16 survivors. Among both groups, 6% of all revenues generated in the NICU were used to help families pay for the bills under a welfare scheme.