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Left seventh intercostal space in the midaxillary line
0%
0/83
Left seventh intercostal space in the midclavicular line
5%
4/83
Left fifth intercostal space just lateral to the sternum
17%
14/83
Left fifth intercostal space in the midaxillary line
20%
17/83
Left fifth intercostal space in the midclavicular line
57%
47/83
Select Answer to see Preferred Response
The only possible knife path to pass though lung and left ventricle would be in the left fifth intercostal space in the midclavicular line. The apex of the heart is covered anteriorly by the left lung. The cardiac notch is an indentation in the left lung due to the deviation of the apex of the heart to the left side. The lingula, a homolog of the right middle lobe, is a flap of lung tissue of the superior lobe that lies below the cardiac notch. Geelhoed describes blunt or penetrating trauma to the chest. Several life-threatening conditions can result: open or closed pneumothorax; hemothorax; flail chest; pericardial tamponade; injury the esophagus, trachea or great vessels. Knowing the anatomical relationships of the structures in the chest is essential. Illustration A displays the relationship of the left ventricle and the left lung. Incorrect Answers: Answer 1-4 would be les likely to traverse both lung and left ventricular tissue given the anatomic relationship of the left left ventricle, lung, sternum and ribs in the thorax.
2.6
(16)
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