ObjectiveTo understand the concentration of heavy metal cadmium and cadmium in portunus and mantis shrimp， and to timely identify food safety problems and potential hazards. MethodsPortunus and mantis shrimp samples from different provinces were collected and categorized based on different regions and locations， and some samples were made from tissue parts. Graphite furnace atomic absorption spectrometry was used to detect cadmium items， the cadmium exposure of portunus and mantis shrimp was evaluated simultaneously ResultsThe detection rate of cadmium in 124 batches of portunus sold in Shanghai was 100% （124/124）， the detection rate of cadmium in 63 batches of mantis shrimp sold in the market was also 100% （63/63）. The cadmium content varied in different tissue parts， and the cadmium enrichment in hepatopancreas was the highest in the edible parts of portunus and mantis shrimp. The average detection value， 50th percentile value， 95th percentile value of cadmium in the hepatopancreas of portunus accounted for 52.64%， 49.28% and 98.65% of the PTMI， respectively. The average detection value， 50th percentile value and 95th percentile value of cadmium in the hepatopancreas of mantis shrimp accounted for 30.76%， 32.04% and 46.16% of the PTMI， respectively. ConclusionThe average residual levels of heavy metal cadmium in portunus and mantis shrimp are within the safe range.

Objective To analyze the antihypertensive compliance rate,drug use and complication distribution among very old hypertensive inpatients under the antihypertensive standard of 150/90 mm Hg in our country(1 mm Hg=0.133 kPa).Methods A total of 409 hospitalized patients aged ≥80 years and diagnosed with hypertension in all departments of Air Force Medical Center of PLA were enrolled,and according to their clinical outcomes,they were divided into intensive antihypertensive group(106 cases,SBP＜130 mm Hg),standard antihypertensive group(155 ca-ses,SBP 130-149 mm Hg)and non-standard blood pressure group(148 cases,SBP ≥150 mm Hg).The status of blood pressure control was analyze in each group.Results When 150/90 mm Hg was used as the blood pressure standard,25.9％were in the intensive blood pressure group,37.9％were in the standard blood pressure group,36.2％were in the non-standard blood pressure group.The proportion of patients aged＞90 years was significantly lower in the non-standard blood pressure group than the intensive antihypertensive group and the standard anti-hypertensive group(4.1％vs 7.5％and 12.3％,P＜0.05).The ratio of single-drug therapy was significantly higher in the standard antihypertensive group than the intensive antihypertensive group(46.5％vs 32.1％,P＜0.05),and that of dual combination therapy was obviously higher in the intensive antihypertensive group than the standard antihypertensive group(35.8％vs 22.6％,P＜0.05).The proportions of heart damage and cerebrovascular damage were significantly higher(43.4％vs 21.9％,26.4％vs 14.8％),and the proportion of complicated retinopathy was notably lower(11.3％vs 23.9％)in the intensive antihypertensive group than the standard antihypertens-ive group(P＜0.05).Conclusion For very old hypertensive patients in our country,it is more sci-entific and practical to use 150/90 mm Hg as the starting standard for blood pressure reduction.Intensified blood pressure reduction increases cardiovascular and cerebrovascular damages in them instead.