Teaching ventilation/perfusion relationships in the lung
Teaching ventilation/perfusion relationships in the lung
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DOI：
10.1152/advan.90147.2008
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发表时间：
2008-09-01
影响因子：
2.1
通讯作者：
Glenny, Robb W.
中科院分区：
文献类型：
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作者：
Glenny, Robb W.
这篇简短的评论是为了作为一个复习教师教学呼吸生理学医学生。通气和灌注匹配的概念是一些最具挑战性的想法学习和教学。在教授这些概念时要考虑的一些策略是，首先，通过从单个肺单元开始，然后添加代表分流、失配和死腔的其他单元，从简单到更复杂地构建。第二，使用简化的类比，如浴缸，帮助学生概念化新的想法。第三，介绍肺泡与动脉氧分压差的概念，以及随着增加肺单位而增加差异的机制。第四，通过讲座使用低氧血症原因的一致线索，以保持连续性并提供临床相关性。最后，在每一步使用临床相关的例子，并通过在讲座结束时讨论鉴别诊断来巩固新的概念。
This brief review is meant to serve as a refresher for faculty teaching respiratory physiology to medical students. The concepts of ventilation and perfusion matching are some of the most challenging ideas to learn and teach. Some strategies to consider in teaching these concepts are, first, to build from simple to more complex by starting with a single lung unit and then adding additional units representing shunting, mismatch, and deadspace. Second, use simplified analogies, such as a bathtub, to help students conceptualize new ideas. Third, introduce the concept of alveolar to arterial O-2 differences and the mechanisms for increasing differences as additional lung units are added. Fourth, use the consistent thread of causes of hypoxemia through the lecture to maintain continuity and provide clinical relevance. Finally, use clinically relevant examples at each step and solidify new concepts by discussing differential diagnoses at the end of the lecture(s).