Which of the following has the greatest likelihood of resulting in an open pneumothorax?
A) Any opening between the pleural cavity and the atmosphere
B) Open defects that are two-thirds the size of the trachea or larger
C) Open defects that are larger in diameter than the trachea
D) Open defects that are one-quarter the size of the trachea or larger
Question 2
You are assessing a 73-year-old male complaining of altered mental status and shortness of breath. The patient is conscious, but confused. He is breathing at a rate of 20 breaths per minute. His pulse is rapid and weak, and his skin cool and diaphoretic. An Emergency Medical Responder provides you with the following vital signs: pulse 136, respirations 20, blood pressure 168/88, and SpO2 at 89. Family states that he is diabetic and takes insulin. He also has a history of hypertension, colon cancer, irregular heartbeat, and transient ischemic attacks (TIA). Which one of the following should you do next?
A) Check the patient's blood sugar.
B) Perform the secondary exam.
C) Apply supplemental oxygen.
D) Administer oral glucose.
Pneumothorax. Figure illustrates how puncture of thoracic wall and tearing of pleural membrane allow
Henry Fox Talbot, The Open Door.
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Comparison of open and closed circulatory systems.