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501.
502.
Tarun Goyal Arghya Kundu Choudhury Souvik Paul Tushar Gupta Lakshmana Das 《Indian Journal of Orthopaedics》2021,55(5):1215
PurposeDirect anterior approach (DAA) has recently become popular in total hip arthroplasty (THA). However, irrespective of the surgical approach used, component malposition is an important factor affecting function and complications after THA. This study aims to compare component positioning on the femoral and acetabular side between DAA and posterior approach (PA) to the hip joint. We hypothesized that the two approaches are similar in terms of component positioning.MethodsWe prospectively studied 50 patients, matched according to age, sex, and body mass index, undergoing THA, divided non-randomly into 2 groups. Group 1 comprised 25 patients (35 hips) undergoing THA using DAA and group 2 comprised 25 patients (25 hips) undergoing THA using PA. Ten patients from group 1 had simultaneous bilateral THA. Radiological parameters studied were acetabular inclination (AI), coronal femoral stem alignment (CFA), leg length difference (LLD), acetabular cup version (AV), and femoral stem version (FV).ResultsThere was no significant difference in AI, CFA, LLD, AV, and FV between the two groups. Excellent to good inter and intra-observer reliability expressed in terms of intraclass correlation coefficient (ICC) was noted for all the radiographic measurements.ConclusionBoth DAA and PA for THA achieve comparable radiological component positioning. DAA may not provide any advantage over PA in terms of positioning of the prosthesis.Level of EvidenceLevel II, non-randomized comparative study. 相似文献
503.
Significance of Some Non-Invasive Biomarkers in the Early Diagnosis and Staging of Egyptian Breast Cancer Patients
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Tarek MK MotawiNadia I ZakharyHebatallah A DarwishHassan AbdullahSamer A Tadros 《Asian Pacific journal of cancer prevention》2020,21(11):3279-3284
Introduction: Breast cancer is one of the most relevant malignancies among women. Early diagnosis and accurate staging of breast cancer is important for the selection of an appropriate therapeutic strategy and achieving a better outcome. Aim: This study aimed to explore the significance of some non-invasive biomarkers in the early diagnosis and staging of Egyptian breast cancer patients. Subjects and Methods: A total of 135 female patients with physically and pathologically confirmed breast cancer and 40 unrelated controls as well as 40 patients with benign breast mass were enrolled in this study. The malignant breast cancer group was further divided into four groups according to tumor size. Serum levels of carcinoembryonic antigen-related cell adhesion molecule-1 (CEACAM1), resistin and visfatin were determined by enzyme immunoassay. Results: Elevated levels of CEACAM1, resistin and visfatin were observed in breast cancer patients when compared with normal control and benign groups. The cutoff values, sensitivities and specificities of these biomarkers were appropriate for the discrimination of breast cancer from controls. Additionally, the serum levels of visfatin increased positively with tumor size and consequently with breast cancer stages. Conclusion: CEACAM1, resistin and visfatin are valuable in early diagnosis of breast cancer, with visfatin being preferentially used in staging. 相似文献
504.
不同温度体外循环对血栓栓塞的影响 总被引:1,自引:0,他引:1
探讨不同温度体外循环中血小板血栓栓塞情况。方法将18只猪均分为3组行体外循环。Ⅰ组,18℃深度温停循环;Ⅱ组,28℃中度低温体外循环;Ⅲ组,37℃常温体外循环。用铟-111标记的自体血小板测定3组心、肺、脑、肝,脾、肾和体外循环设备的血栓栓塞情况。 相似文献
505.
The effects of bleach reprocessing on the performance of high-flux dialyzers have not been comprehensively characterized. We compared the effects of automated bleach/formaldehyde reprocessing on solute and hydraulic permeability for cellulose triacetate (CT190) and polysulfone (F80B) dialyzers using an in vitro model. Dialyzers were studied after initial blood exposure (R0) and after 1 (R1), 5 (R5), 10 (R10), and 15 (R15) reuse cycles. Ultrafiltration coefficient (K(uf)), serial clearances, and/or sieving coefficients (SCs) of urea, creatinine, vancomycin, inulin, myoglobin, and albumin were determined. Urea, creatinine, and vancomycin clearances and SCs did not significantly differ from R0 to R15 with either dialyzer. Inulin clearances and SC also did not significantly change from R0 to R15 for the CT190. However, these same values for the F80B significantly increased (P < 0.05). The inulin clearance and SC values for the CT190 dialyzer were significantly higher than those for the F80B at all stages except R15. Myoglobin clearances significantly increased over 15 reuses for both dialyzers (P < 0.01). However, CT190 myoglobin clearances were significantly higher at all stages (R0 = 37.7 +/- 9.7; R15 = 52.5 +/- 8.8 mL/min) than the F80B (R0 = negligible; R15 = 41.3 +/- 16.5 mL/min; P < 0.01). Albumin pre- and postdialysis SCs significantly increased for both dialyzers (P < 0.01). K(uf) for R0 and R15 were 52.3 +/- 3.3 and 52.6 +/- 7.6 mL/h/mm Hg for CT190 (P = not significant) and 48.8 +/- 4.4 and 87.3 +/- 7.0 mL/h/mm Hg for F80B (P < 0.0001). We conclude that bleach reprocessing significantly increases larger solute and hydraulic permeability of high-flux cellulosic and polysulfone dialyzers. This effect is more pronounced for the polysulfone membrane. Until 10 reuses or greater, the removal of solutes greater than 1,500 d is significantly compromised with the polysulfone dialyzer used in this study. 相似文献
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507.
Background
Case-control studies typically exclude fatal endpoints from the case set, which we hypothesize will substantially underestimate risk if survival is genotype-dependent. The loss of fatal cases is particularly nontrivial for studies of coronary heart disease (CHD) because of significantly reduced survival (34% one-year fatality following a coronary attack). A case in point is the KIF6 Trp719Arg polymorphism (rs20455). Whereas six prospective studies have shown that carriers of the KIF6 Trp719Arg risk allele have 20% to 50% greater CHD risk than non-carriers, several cross-sectional case-control studies failed to show that carrier status is related to CHD. Computer simulations were therefore employed to assess the impact of the loss of fatal events on gene associations in cross-sectional case-control studies, using KIF6 Trp719Arg as an example. 相似文献508.
509.
Aerosol production using inclined compressed air tanks may be subject to error caused by airflow meter variability and by the degree of inclination of the air-flow meter. Since most of these tanks are used in an inclined position, it is important for clinicians to be aware of these errors. 相似文献
510.
Characterization of survival motor neuron (SMNT) gene deletions in asymptomatic carriers of spinal muscular atrophy 总被引:14,自引:1,他引:13
Wang CH; Xu J; Carter TA; Ross BM; Dominski MK; Bellcross CA; Penchaszadeh GK; Munsat TL; Gilliam TC 《Human molecular genetics》1996,5(3):359-365
Previous reports have established that the telomeric copy of the survival
motor neuron (SMNT) gene and the intact copy of the neuronal apoptosis
inhibitory protein (NAIP) gene are preferentially deleted in patients with
spinal muscular atrophy (SMA). Although deletions or mutations in the SMNT
gene are most highly correlated with SMA, it is not clear to what extent
NAIP or other genes influence the SMA phenotype, or whether a small
fraction of SMA patients actually have functional copies of both SMNT and
NAIP. To evaluate further the part of SMNT in the development of SMA, we
analyzed 280 asymptomatic SMA family members for the presence or absence of
SMNT exons 7 and 8. We report the following observations: (i) 4% of the
sample harbored a polymorphic variant of SMNT exon 7 that looks like a
homozygous deletion; (ii) approximately 1% of the parents are homozygously
deleted for both exons 7 and 8; (iii) one asymptomatic parent lacking both
copies of SMNT exons 7 and 8 displays a 'subclinical phenotype'
characterized by mild neurogenic pathology; (iv) another asymptomatic
parent lacking both SMNT exons showed no signs of motor neuron disorder by
clinical and neurodiagnostic analyses. The demonstration of polymorphic
variants of exon 7 that masquerade as homozygous nulls, and the
identification of SMA parents who harbor two disease alleles, serve as a
caution to those conducting prenatal tests with these markers.
相似文献