BACKGROUND Iron deficiency anemia(IDA)and thalassemia trait(TT)are the most common microcytic and hypochromic anemias.Differentiation between mild TT and early IDA is still a clinical challenge.AIM To develop and vali...BACKGROUND Iron deficiency anemia(IDA)and thalassemia trait(TT)are the most common microcytic and hypochromic anemias.Differentiation between mild TT and early IDA is still a clinical challenge.AIM To develop and validate a new index for discriminating between IDA and TT.METHODS Blood count data from 126 patients,consisting of 43 TT patients and 83 IDA pa-tients,was retrospectively analyzed to develop a new index formula.This formula was further validated in another 61 patients,consisting of 48 TT patients and 13 IDA patients.RESULTS The new index is the ratio of hemoglobin to mean corpuscular volume.Its sen-sitivity,specificity,accuracy,Youden’s Index,area under the receiver operating characteristic curve,and Kappa coefficient in discriminating between IDA and TT were 93.5%,78.4%,83.3%,0.72,0.97,and 0.65,respectively.CONCLUSION This new index has good diagnostic performance in discriminating between mild TT and early IDA.It requires only two results of complete blood count,which can be a very desirable feature in under-resourced scenarios.展开更多
AIM: To evaluate whether preoperative mean corpuscular volume (MCV) is a prognostic indicator in patients with resectable esophageal squamous cell carcinoma (ESCC). METHODS: A total of 298 consecutive, prospectively e...AIM: To evaluate whether preoperative mean corpuscular volume (MCV) is a prognostic indicator in patients with resectable esophageal squamous cell carcinoma (ESCC). METHODS: A total of 298 consecutive, prospectively enrolled patients with histologically diagnosed ESCC who underwent surgery with curative intent from 2001 to 2011 were retrospectively evaluated. Patients were excluded if they had previous malignant disease, distant metastasis at the time of primary treatment, a history of neoadjuvant treatment, had undergone nonradical resection, or had died of a non-tumor-associated cause. Survival status was verified in September 2011. Pathological staging was performed based on the 2010 American Joint Committee on Cancer criteria. Preoperative MCV was obtained from blood counts performed routinely within 7 d prior to surgery. Receiver operating characteristic (ROC) curve analysis was used to determine a cutoff for preoperative MCV. RESULTS: The 298 patients consisted of 230 males and 68 females, with a median follow-up of 30.1 mo. ROC analysis showed an optimal cutoff for preoperative MCV of 95.6 fl. Fifty-nine patients (19.8%) had high (> 95.6 fl) and 239 (80.2%) had low (≤ 95.6 fl) preoperative MCV. Preoperative MCV was significantly associated with gender (P=0.003), body mass index (P=0.017), and preoperative red blood cell count (P<0.001). The predicted 1-, 3and 5-year overall survival (OS) rates were 72%, 60% and 52%, respectively. Median OS was significantly longer in patients with low than with high preoperative MCV (27.5 mo vs 19.4 mo, P<0.001). Multivariate analysis showed that advanced pT (P=0.018) and pN (P<0.001) stages, upper thoracic location (P=0.010), lower preoperative albumin concentration (P=0.002), and high preoperative MCV (P=0.001) were negative prognostic factors in patients with ESCC. Preoperative MCV also stratified OS in patients with T3, N1-N3, G2-G3 and stage Ⅲ tumors. CONCLUSION: Preoperative MCV is a prognostic factor in patients with ESCC.展开更多
Correlation analysis between the hematological parameters mean corpuscular hemoglobin (MCH) and mean corpuscular volume (MCV) for thalassemia screening in large population was discussed. A total of 4920 peripheral blo...Correlation analysis between the hematological parameters mean corpuscular hemoglobin (MCH) and mean corpuscular volume (MCV) for thalassemia screening in large population was discussed. A total of 4920 peripheral blood samples of reproductive age persons were collected from Guangdong province of China. The hematological parameters MCH and MCV values of samples were first measured, and then the DNA analyses for thalassemia were conducted. All samples were composed by 4463 non-thalassemia and 457 thalassemia, and among 457 thalassemia samples, 311 were α-thalassemia, 133 were β-thalassemia, and 13 were α & β-thalassemia. In accordance with non-thalassemia, thalassemia, α-thalassemia, β-thalassemia, α & β-thalassemia and the entire group itself, a total of six sample groups were divided. The corresponding correlation coefficients between the measured MCH and MCV values for the six sample groups were 0.880, 0.968, 0.966, 0.962, 0.980 and 0.965 respectively. For the thalassemia carriers, highly significant correlation between MCH and MCV were observed. The fitting equations between MCH and MCV values were also obtained. The results indicated that the feasibility for thalassemia screening using MCV or MCH independently as parameter, and provided suitable strategy to select parameters and models for thalassemia screening in large population.展开更多
目的探讨红细胞平均体积(MCV)和红细胞分布宽度(RDW)对XN-3000血液分析仪电阻抗法(PLT-I)和核酸染色法(PLT-F)低值血小板计数的影响。方法采用Sysmex-XN3000血液分析仪对68例低值血小板患者(分四组:红细胞MCV≥70 f L、MCV<60 f L、6...目的探讨红细胞平均体积(MCV)和红细胞分布宽度(RDW)对XN-3000血液分析仪电阻抗法(PLT-I)和核酸染色法(PLT-F)低值血小板计数的影响。方法采用Sysmex-XN3000血液分析仪对68例低值血小板患者(分四组:红细胞MCV≥70 f L、MCV<60 f L、60 f LMCV<70 f L而RDW<0.2、60 f LMCV<70 f L而RDW>0.2)EDTA抗凝血分别用PLT-I法和PLT-F法进行血小板计数,同时用Beckman Coulter FC500流式细胞仪(免疫法)计数,以免疫法为参考方法进行比较分析。结果 PLT-F法、PLT-I法与免疫法的相关系数r分别为0.931、0.808,PLT-F法的相关性明显优于PLT-I法;当红细胞MCV≥70 f L、60 f L≤MCV<70 f L而RDW<0.2时,PLT-I法与免疫法比较血小板计数,差异无统计学意义(P>0.05);当红细胞MCV<60 f L、60 f L≤MCV<70 f L而RDW>0.2时,PLT-I法与免疫法比较血小板计数,差异有统计学意义(P<0.05);不同组在PLT-F法与免疫法比较差异均无统计学意义(P>0.05)。结论 PLT-F法与免疫法有良好的相关性,PLT-I法对低值血小板计数的准确性有较大影响,当MCV<60 f L或者60 f L≤MCV<70 f L而RDW>0.2时,血小板应该采用流式细胞仪或PLT-F法检测以获得更为准确的数据。展开更多
目的:探讨平均红细胞体积(m ean corpuscu lar volum e,MCV)及红细胞体积分布宽度(red b lood cell volum e d istribution w idth,RDW)对地中海贫血(简称地贫,MD)和巨幼细胞性贫血(简称巨幼贫血,MA)诊断的临床价值。方法:利用血细胞自...目的:探讨平均红细胞体积(m ean corpuscu lar volum e,MCV)及红细胞体积分布宽度(red b lood cell volum e d istribution w idth,RDW)对地中海贫血(简称地贫,MD)和巨幼细胞性贫血(简称巨幼贫血,MA)诊断的临床价值。方法:利用血细胞自动分析仪测定不同病因的贫血患者的MCV和RDW值。结果:MD患者,MCV降低,RDW升高,且α-地贫与β-地贫无差异;MA患者,MCV和RDW升高;急性失血性贫血和再生障碍性贫血(ap lastic anem ia,AA)患者,MCV和RDW正常。结论:MCV和RDW红细胞参数,可作为贫血病因诊断及鉴别诊断的参考线索,对地贫和巨幼贫血的诊断和治疗有一定的指导意义。展开更多
基金The study was reviewed and approved by the Shanghai Tenth People’s Hospital Institutional Review Board(Approval No.23K190).
文摘BACKGROUND Iron deficiency anemia(IDA)and thalassemia trait(TT)are the most common microcytic and hypochromic anemias.Differentiation between mild TT and early IDA is still a clinical challenge.AIM To develop and validate a new index for discriminating between IDA and TT.METHODS Blood count data from 126 patients,consisting of 43 TT patients and 83 IDA pa-tients,was retrospectively analyzed to develop a new index formula.This formula was further validated in another 61 patients,consisting of 48 TT patients and 13 IDA patients.RESULTS The new index is the ratio of hemoglobin to mean corpuscular volume.Its sen-sitivity,specificity,accuracy,Youden’s Index,area under the receiver operating characteristic curve,and Kappa coefficient in discriminating between IDA and TT were 93.5%,78.4%,83.3%,0.72,0.97,and 0.65,respectively.CONCLUSION This new index has good diagnostic performance in discriminating between mild TT and early IDA.It requires only two results of complete blood count,which can be a very desirable feature in under-resourced scenarios.
文摘AIM: To evaluate whether preoperative mean corpuscular volume (MCV) is a prognostic indicator in patients with resectable esophageal squamous cell carcinoma (ESCC). METHODS: A total of 298 consecutive, prospectively enrolled patients with histologically diagnosed ESCC who underwent surgery with curative intent from 2001 to 2011 were retrospectively evaluated. Patients were excluded if they had previous malignant disease, distant metastasis at the time of primary treatment, a history of neoadjuvant treatment, had undergone nonradical resection, or had died of a non-tumor-associated cause. Survival status was verified in September 2011. Pathological staging was performed based on the 2010 American Joint Committee on Cancer criteria. Preoperative MCV was obtained from blood counts performed routinely within 7 d prior to surgery. Receiver operating characteristic (ROC) curve analysis was used to determine a cutoff for preoperative MCV. RESULTS: The 298 patients consisted of 230 males and 68 females, with a median follow-up of 30.1 mo. ROC analysis showed an optimal cutoff for preoperative MCV of 95.6 fl. Fifty-nine patients (19.8%) had high (> 95.6 fl) and 239 (80.2%) had low (≤ 95.6 fl) preoperative MCV. Preoperative MCV was significantly associated with gender (P=0.003), body mass index (P=0.017), and preoperative red blood cell count (P<0.001). The predicted 1-, 3and 5-year overall survival (OS) rates were 72%, 60% and 52%, respectively. Median OS was significantly longer in patients with low than with high preoperative MCV (27.5 mo vs 19.4 mo, P<0.001). Multivariate analysis showed that advanced pT (P=0.018) and pN (P<0.001) stages, upper thoracic location (P=0.010), lower preoperative albumin concentration (P=0.002), and high preoperative MCV (P=0.001) were negative prognostic factors in patients with ESCC. Preoperative MCV also stratified OS in patients with T3, N1-N3, G2-G3 and stage Ⅲ tumors. CONCLUSION: Preoperative MCV is a prognostic factor in patients with ESCC.
文摘Correlation analysis between the hematological parameters mean corpuscular hemoglobin (MCH) and mean corpuscular volume (MCV) for thalassemia screening in large population was discussed. A total of 4920 peripheral blood samples of reproductive age persons were collected from Guangdong province of China. The hematological parameters MCH and MCV values of samples were first measured, and then the DNA analyses for thalassemia were conducted. All samples were composed by 4463 non-thalassemia and 457 thalassemia, and among 457 thalassemia samples, 311 were α-thalassemia, 133 were β-thalassemia, and 13 were α & β-thalassemia. In accordance with non-thalassemia, thalassemia, α-thalassemia, β-thalassemia, α & β-thalassemia and the entire group itself, a total of six sample groups were divided. The corresponding correlation coefficients between the measured MCH and MCV values for the six sample groups were 0.880, 0.968, 0.966, 0.962, 0.980 and 0.965 respectively. For the thalassemia carriers, highly significant correlation between MCH and MCV were observed. The fitting equations between MCH and MCV values were also obtained. The results indicated that the feasibility for thalassemia screening using MCV or MCH independently as parameter, and provided suitable strategy to select parameters and models for thalassemia screening in large population.
文摘目的探讨红细胞平均体积(MCV)和红细胞分布宽度(RDW)对XN-3000血液分析仪电阻抗法(PLT-I)和核酸染色法(PLT-F)低值血小板计数的影响。方法采用Sysmex-XN3000血液分析仪对68例低值血小板患者(分四组:红细胞MCV≥70 f L、MCV<60 f L、60 f LMCV<70 f L而RDW<0.2、60 f LMCV<70 f L而RDW>0.2)EDTA抗凝血分别用PLT-I法和PLT-F法进行血小板计数,同时用Beckman Coulter FC500流式细胞仪(免疫法)计数,以免疫法为参考方法进行比较分析。结果 PLT-F法、PLT-I法与免疫法的相关系数r分别为0.931、0.808,PLT-F法的相关性明显优于PLT-I法;当红细胞MCV≥70 f L、60 f L≤MCV<70 f L而RDW<0.2时,PLT-I法与免疫法比较血小板计数,差异无统计学意义(P>0.05);当红细胞MCV<60 f L、60 f L≤MCV<70 f L而RDW>0.2时,PLT-I法与免疫法比较血小板计数,差异有统计学意义(P<0.05);不同组在PLT-F法与免疫法比较差异均无统计学意义(P>0.05)。结论 PLT-F法与免疫法有良好的相关性,PLT-I法对低值血小板计数的准确性有较大影响,当MCV<60 f L或者60 f L≤MCV<70 f L而RDW>0.2时,血小板应该采用流式细胞仪或PLT-F法检测以获得更为准确的数据。
文摘目的:探讨平均红细胞体积(m ean corpuscu lar volum e,MCV)及红细胞体积分布宽度(red b lood cell volum e d istribution w idth,RDW)对地中海贫血(简称地贫,MD)和巨幼细胞性贫血(简称巨幼贫血,MA)诊断的临床价值。方法:利用血细胞自动分析仪测定不同病因的贫血患者的MCV和RDW值。结果:MD患者,MCV降低,RDW升高,且α-地贫与β-地贫无差异;MA患者,MCV和RDW升高;急性失血性贫血和再生障碍性贫血(ap lastic anem ia,AA)患者,MCV和RDW正常。结论:MCV和RDW红细胞参数,可作为贫血病因诊断及鉴别诊断的参考线索,对地贫和巨幼贫血的诊断和治疗有一定的指导意义。
