Blood lead levels in a continuity clinic population.

INTRODUCTION: Lead toxicity is well recognized as a significant cause of morbidity in children, especially those under the age of six years. While lead toxicity has not been recognized as a public health problem in Houston, it is possible that children in the area suffer from low-level lead effects on the central nervous system. OBJECTIVES: To detect asymptomatic cases of lead toxicity in one population of Houston children and to assess the effectiveness of the lead risk questionnaire. DESIGN: Venous blood samples for quantitative lead were analyzed utilizing the Anodic Stripping Voltameter. The Centers for Disease Control's lead risk assessment questionnaire was administered to each patient. SETTING: Baylor College of Medicine Continuity Clinic at Texas Children's Hospital. SUBJECTS: All patients, ages 9-72 months, seen for routine care between December 1992 and June 1994 were screened once. RESULTS: Blood lead levels were obtained on 801 children; all but 47 completed lead risk questionnaires. The mean age of the study group was 2.37 years (SD 1.84) and they were 54% male. They were 39% Hispanic, 39% Black, and 18% White. Eighty-eight percent reported an annual income of < $20,000. They lived in 127 separate zip codes. Twenty-five (3.1%) patients had elevated blood lead, 21 between 10-14 micrograms/dL and 4 between 15-19 micrograms/dL. No patients had blood lead levels of > or = 20 micrograms/dL. No statistically significant differences were found between patients with blood lead < 10 micrograms/dL and those with > or = 10 micrograms/dL when comparing for age, sex, ethnicity, income, and zip code. Only those children living in or regularly visiting a pre-1960 home with peeling or chipping paint were significantly more likely to have elevated blood lead (p = .045). CONCLUSION: Although the majority of children in our setting were poor and urban, the prevalence of blood lead > or = 10 micrograms/dL was 3.1%, well below the estimated 17% quoted by the Centers for Disease Control in recommending stringent screening guidelines. The lead risk assessment questionnaire failed to identify 32% of children with elevated blood lead levels. Since this questionnaire is critical to screening populations at low risk for lead toxicity, it is important to determine whether a revised questionnaire or a more careful elicitation of parental responses will improve identification of those children at risk.

Comparison of continuity clinic experience by practice setting and postgraduate level.

OBJECTIVE: To compare continuity clinic experiences by practice setting and postgraduate level. DESIGN: Mailed questionnaire. SETTING: Baylor College of Medicine pediatric residents selected 1 of 3 continuity practice settings, including community-based private offices (n = 35) and university-based clinics in a private (n = 71) and a public (n = 12) hospital. SUBJECTS: One hundred eighteen pediatric residents, May 1993. OUTCOME MEASURES: Patient volume, continuity of care, type of patient visit, and faculty supervision. RESULTS: The response rate was 77% (91/118). Pediatric residents in community-based private offices reported seeing more patients per session than those in the university-based private and public clinics (88%, 10%, and 0% residents in the respective practice settings reported > or = 4 patients per session), but were less likely to see patients repeatedly (6%, 68%, and 40% residents in the respective practice settings had seen more than half their patients > 2 times). Residents in private offices provided a smaller percentage of well child care (16%, 61%, and 90% residents in the respective practice settings reported > 50% patients were well) and more acute care (68%, 15% and 0% residents in the respective practice settings reported > 25% patients were acutely ill). Residents in private offices reported a higher percentage of time spent observing only (33%, 0%, and 0% residents in the respective practice settings observed > 25% of the time) and less time managing patients independently (93%, 59%, and 40% residents, respectively, managed < or = 25% of the time). No significant differences among postgraduate levels were found for these variables. CONCLUSIONS: Patient volume, continuity of care, type of patient visit, and faculty supervision were significantly different among continuity practice settings. Postgraduate level of training did not affect significantly these measures of continuity clinic experience. These differences need to be considered in curriculum development.

Practice variations by population: training significance.

OBJECTIVE: This study sought to examine variations in the frequency of procedures performed and patterns of care of sick infants and older children by general pediatricians in different sized communities. The results of the study will be considered in developing relevant educational experiences for postgraduate trainees. METHODOLOGY: Questionnaires were sent to 1412 Texas pediatricians requesting frequency information for 29 procedures and whether they provided various levels of care to sick infants and older children. Responses were tabulated by the size of the community in which each pediatrician practiced. RESULTS: Fifty-four percent of the questionnaires were returned. The proportion of pediatricians performing each procedure was significantly different for all but 8 of the 29 procedures between communities of less than 100,000 and more than 100,000 population. For all procedures with significant differences, the proportion of physicians performing the procedures was significantly greater for pediatricians practicing in communities of less than 100,000 population. No significant difference was found between the proportion of pediatricians providing newborn level II and III care; however, more than 65% of both groups provided level II care. Physicians in communities of less than 100,000 population were more likely to provide intermediate and intensive care beyond the newborn period. CONCLUSION: The general practice rotation in the community setting will not provide adequate training experiences for many of the procedures currently being performed by general pediatricians.

Brucellosis of the central nervous system. A case report of an infected infant.

Brucellosis in early infancy is unusual and reports of congenitally acquired infection are extremely rare. The patient presented at the age of 8 months with high fever and signs of meningitis. He had a previous history of hydrocephalus undergoing shunt alleviation at 1 month of age. A diagnosis of central nervous system (CNS) brucellosis was subsequently made. Transplacental transmission is offered as a possible explanation for the acquisition of this child's brucellosis infection.