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Review and Preview01:10

Review and Preview

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In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
Percentiles are a type of fractile that partition data into...
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Review and Preview01:13

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Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
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Air-entraining Agents01:27

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Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
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Effects of Air-entrainment in Concrete01:28

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Air entrainment in concrete significantly enhances the material's durability, especially in environments subjected to freeze-thaw cycles. Introducing small air bubbles into the concrete mix acts as internal voids that accommodate the expansion of water when it freezes, thereby alleviating internal stress and preventing structural cracks. This function is crucial in climates with significant freezing and thawing, as it protects the concrete from repeated stresses that could lead to premature...
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Measurement of Air Content in Concrete01:23

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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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Persistent air leak - review.

Kenneth K Sakata1, Janani S Reisenauer2, Ryan M Kern1

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|April 2, 2018
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Summary
This summary is machine-generated.

Persistent air leaks (PAL), caused by alveolar-pleural fistulas or bronchopleural fistulas, present diagnostic and management challenges. This review covers bronchoscopic and surgical options for interventional pulmonology and thoracic surgery.

Keywords:
Bronchopleural fistulaInterventional bronchoscopyInterventional pulmonologyPersistent air leakProlong air leak

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Area of Science:

  • Pulmonary Medicine
  • Thoracic Surgery
  • Interventional Pulmonology

Background:

  • Persistent air leak (PAL) is a serious complication arising from alveolar-pleural fistulas (APF) or bronchopleural fistulas (BPF).
  • PAL significantly increases patient morbidity, mortality, hospital stay duration, and healthcare resource utilization.
  • Diagnosis and management of PAL pose considerable challenges for pulmonary physicians and thoracic surgeons.

Purpose of the Study:

  • To review diagnostic and treatment strategies for persistent air leaks.
  • To focus on options relevant to interventional pulmonology and thoracic surgery.
  • To provide insights into managing challenging PAL cases.

Main Methods:

  • Review of existing literature on bronchoscopic and surgical interventions for PAL.
  • Analysis of diagnostic techniques for identifying the source of air leaks.
  • Evaluation of treatment modalities including chest tube thoracostomy, bronchoscopy, and surgery.

Main Results:

  • Chest tube thoracostomy is the initial treatment for many PAL cases.
  • A significant portion of patients require alternative bronchoscopic or surgical interventions.
  • Various bronchoscopic and surgical techniques exist for diagnosing and managing PAL.

Conclusions:

  • Effective management of PAL requires a thorough understanding of both bronchoscopic and surgical options.
  • Interventional pulmonology and thoracic surgery play crucial roles in addressing PAL.
  • Optimizing PAL treatment can mitigate associated complications and improve patient outcomes.