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Lead Poisoning Without EncephalopathyEffect of Early Diagnosis on Neurologic and Psychologic Salvage
Henrietta K. Sachs, MD;
Donald A. McCaughran, PhD;
Vita Krall, PhD;
Irving H. Rozenfeld, MD;
Nillawan Yongsmith, MD
Am J Dis Child. 1979;133(8):786-790.
Abstract
Medical and psychological status of 166 patients previously treated for lead poisoning and of 22 sibling controls were evaluated. Maximum blood lead levels ranged from 40 to 471 µg/dL. Eighteen patients had definite symptoms, 32 had questionable symptoms, and 116 were asymptomatic. No patients developed seizures, other neurological sequelae, or abnormal nerve conduction velocity. No statistically significant relationship was found between blood lead concentration (PbB) and subsequent intellectual function. The mean IQ of the patient cohort was 87, approximately at the 50th percentile for inner-city schoolchildren in Chicago. Detection prior to encephalopathy and prompt detoxification were effective in preventing or minimizing sequelae despite high PbBs.
(Am J Dis Child 133:786-790, 1979)
Author Affiliations
From the Departments of Pediatrics (Drs Sachs and Rozenfeld), Psychology (Dr Krall), Rehabilitative Medicine (Dr Yongsmith), and the Siegel Institute for Communicative Disorders (Dr Rozenfeld), Michael Reese Medical Center, Chicago; and the Department of Biomathematics (Dr McCaughran), University of Washington, Seattle.
Footnotes
Reprint requests to 182 LaPier, Glencoe, IL 60022 (Dr Sachs).
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