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Updated: May 2, 2026

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诺伍德子尺寸的精度:单心室重建试验 公共数据集分析

Luisa Raga1, Haleh Heydarian2, David Winlaw1

  • 1The Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.

The Annals of thoracic surgery
|March 21, 2024
PubMed
概括

对于诺伍德手术而言,特尺寸的选择会影响结果. 修改后的Blalock-Taussig-Thomas分离器的最佳尺寸对于改善婴儿心脏手术复杂后的患者生存和康复至关重要.

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Sample Size Calculation01:19

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Knowledge of the sample size is the first requirement to conduct random sampling or an experiment. The sample size is the total number of units, observations, or groups (in some cases) used to get the data to estimate a population parameter. As the name suggests, the sample size is that of the sample drawn from the population and differs from the population size.
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Air content measurement in concrete is critical for ensuring structural integrity and durability of concrete structures, especially in environments prone to severe weather conditions. Accurate air content analysis optimizes concrete's resistance to freeze-thaw cycles and enhances its workability and strength. Several methods are standardized under ASTM guidelines to measure the air content in fresh concrete, each suitable for different concrete types and conditions.
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