Which of the following assessment findings would be suggestive of cardiac tamponade?
A) Increasing PaCO2 and decreasing PaO2
B) Audible crackles on chest auscultation and presence of frothy sputum
C) A 20 mm Hg drop in systolic blood pressure during respiration
D) Normal ECG combined with complaints of chest pain and shortness of breath
Ans: C
Feedback:
A key diagnostic finding in cardiac tamponade is pulsus paradoxus, or an exaggeration of the normal variation in the systolic blood pressure, commonly defined as a 10 mm Hg or more fall in the systolic blood pressure, which occurs with inspiration. Worsening blood gases, chest secretions, and chest pain are not symptoms specific to cardiac tamponade. The client's ECG would not be normal.
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