چکیده انگلیسی:
Background:Lead toxicity continues to remain a concerning health problem for developing nations like Pakistan. Due to the lack of studies, we aim to highlight the clinical spectrum of lead poisoning in patients presenting to an urban-based tertiary care hospital in Pakistan. Method:This is a retrospective review of patients admitted form January 2011 to December 2014 using a structured questionnaire for recording demographics, comorbidities, clinical findings, biochemical abnormalities, clinical findings and treatment provided. Patients were categorized as children (≤18yrs) and adults (>18yrs), further divided into three groups; desired blood lead levels (BLLs) [lead levels <2ug/dl in children and <10ug/dl in adults], high but non-toxic [children 2-10ug/dl, adults 10-70ug/dl] and toxic [children >10ug/dl, adults >70ug/dl]. Result: A total of 86 patients were included in the final analysis, majority (69.6%) of whom were adult males with median age of 35 yrs. Median (IQR) BLL was 6.3 ug/dl (12.8-2.7) in all age groups with BLL in children and adults of 4.2 ug/dl (3.1-5.7) and 6.5 ug/dl (2.6-14.7), respectively. 72% of the children had complaints related to the central nervous system with majority complaining of irritability. The gastrointestinal system was most commonly implicated in adults (93%) with most common complaint of abdominal pain. The commonest risk factor showing a positive correlation with BLLs was battery handling in adults [median (IQR) BLL 18.4ug/dl (8.35-36.1)] and pica eating in children with BLLs in high but non-toxic range [median (IQR) BLL 5.2ug/dl (2.7-5.7)]. The highest BLLs were observed to lie within the high but non-toxic range group in one adult herbal medicine user (54.4 ug/dl) and in children observed in the toxic range group (>10ug/dl) due to occupational battery work exposure and residence in a congested zone. Conclusion:Lead toxicity continues to be hazardous due to unchecked environmental and occupational exposure. Increasing awareness is tantamount in order to find a solution.
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