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Exam 6: Patient Monitoring Technology

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Question 21

Multiple Choice

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The SA and AV nodes are perfused by the ________ artery.

A) anterior descending
B) right coronary
C) left coronary
D) circumflex coronary

E) A) and B)
F) C) and D)

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Question 22

Multiple Choice

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Lung perfusion depends on all of the following EXCEPT:

A) efficient pumping of blood by the heart.
B) intact pulmonary capillaries.
C) an intact alveolar membrane.
D) adequate blood volume.

E) None of the above
F) A) and C)

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Question 23

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When the ECG paper is traveling at the standard rate of 25 mm/sec, a large box in the horizontal direction equals:

When oxygen is not bound to the iron molecule of hemoglobin, the iron molecule is in the ferrous (Fe²⁺) charge state, rather than when oxygen changes the charge of iron to the ferric (Fe³⁺) state. A dangerous form of hemoglobin that is unable to oxidize is:

A 12-lead ECG that reveals ST elevation in all of the precordial leads most indicates myocardial:

The normal range of hemoglobin (Hb) levels in the adult male patient would be closest to:

There are three large boxes between R waves on an ECG tracing. What is the heart rate?

Which of the following uses for ultrasound is NOT indicated in the prehospital setting?

Your patient is a 15-year-old asthmatic who has been having difficulty breathing for 45 minutes, but does not have his Xopenex inhaler with him. Capnography shows an ETCO₂ of 45 mmHg. What is the best way to interpret this finding?

Which of the following is a traumatic mechanism by which a myocardial injury can be produced?

Which of the following can be determined by lead II cardiac monitoring?

Which of the following is the most important determinant of ventilatory rate?

Which of the following describes the ability of a cardiac cell to propagate the electrical impulse to another cell?

ETCO₂ is recorded during phase ________ of the capnogram.

Which of the following cardiac enzymes and biomarkers is NOT measured and analyzed to help confirm a myocardial infarction?

At standard speed, a 1 mm box on ECG paper represents ________ seconds.

Slowing of the electrical impulse at the AV node is necessary to allow time for the ________ to fill with blood.

You are working at the triage desk in the ED when a young man on crutches approaches the desk. He appears moderately short of breath. He states he had a cast put on his left leg seven days ago after surgery for a ruptured Achilles tendon. This morning, while he was watching television, he suddenly became short of breath. He has a history of asthma, for which he takes Xopenex as needed, and is taking Tylenol with codeine for pain related to his surgery. The patient's lung sounds are clear and equal, SpO₂ is 90 percent on room air, heart rate is 100 and regular, respirations are 24 and slightly labored, blood pressure is 128/88 mmHg, and the patient is afebrile. These findings are most consistent with:

Your patient is a 44-year-old woman, alert and oriented, in moderate distress and complaining of difficulty breathing. She gives a one-week history of fever and malaise, with shortness of breath developing three days ago. She also has left-sided chest pain with deep inspiration and a "phlegmy" cough. Physical examination reveals hot, pale, dry skin, and rhonchi and crackles throughout the left lung. The right lung sounds are clear. HR = 134, BP = 88/64, RR = 24, SaO₂ = 92%. She has a history of two previous myocardial infarctions and takes nitroglycerin as needed. Which of the following is the best course of prehospital management?

Which of the following endocrine substances acts as a marker for congestive heart failure?