ABSTRACT
Objective To investigate the status of control of endemic fluorosis in Liaoning Province.Methods To investigate the prevalence rate of endemic fluorosis and water fluoride content in regions with different extent of endemic fluorosis,dental fluomsis among 8-12 years old children and clinical fluorosis at adult above 16 years old were extensively surveyed,urinary fluoride among 8-12 years old children was detected.Results We surveyed 842 undefluorided drinking water in endemic fluorosis villages and 1234 projects of improving drinking water in 1829 endemic fluorosis viflages.Water fluoride content was 0.01-7.10 mg/L in unimproved drinking water in endemic fluorosis resions,averaging(0.96±0.64)mg/L;29.2%(246/842)of the endemic fluorosis regions had a fluoride content more than 1.2 mg/L In 1234 projects of improving drinking water.drinking water fluoride content was between 0.06-7.67 mg/L.The project normally operated and having a fluoride content≤1.2 mg/L accounted for 68.31%(843/1234),while 31.69%(391/1234)of the projects did not function well.The prevalence of dental fluomsis in 8-12 years old child ren in endemic fluorosis regions was 24.4%(2960/12 127),the prevalence of clinical fluorosis among adults was 2.22%(1900/85 636).The prevalente of dental fluorosis in slight,moderate and serious fluorosis regions had remarkable statistics differences(X2＝19.25,P＜0.01).The prevalence of dental fluorosis of children in serious fluorosis regions was the highest,reaching 100%,while the prevalence of skeletal fluorosis wns 18.03%(97/538).The median of urinary fluoride was 2.01.2.00mg/L in serious and slight fluomsis regions,respectively.Conclusions Endemic fluorosis is still serious.so we need urgently to improve water in serious fluorosis regions without defluoridaton of drinking water.Endemic fluomsis resions where worn-out and closed defluoriding projects exist need defluoriding management.
ABSTRACT
Objective To explore the surgical effect to traumatic tentorial herniation with bilater- al mydriasis.Methods The patients were divided into three groups,ie,epidural hematoma group,a- cute diffuse brain swelling group and cerebral contusion and/or subdural hematoma group,to perform clinical outcome analysis.Half year after operation,the neurological outcome was scored according to the Glasgow Outcome Scale.Results Of all,there were three cases with good recovery,10 with moderate disability,nine with severe disability and 10 with vegetative survival but 35 deaths.The outcome was the best in epidural hemotoma group but the poorest in acute diffuse brain swelling group.Conclusions The operative effect of traumatic cerebral herniation with bilateral mydriasis is related with the type of orig- inal injury that is important for selection of operation.Patients with cerebral herniation caused by epidural hematoma should receive immediate operation that will induce better outcome.The operation is not vital for those with cerebral herniation caused by acute diffuse brain swelling.Emergent surgery can save lives of some patients with cerebral contusion and/or subdural hematoma.Rapid diagnosis,correct operation and perioperative treatment may ensure the success of surgery.