Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
A group of nurses is reviewing several electrocardiograms (ECGs). The students demonstrate an understanding of the waveforms when they identify which component as indicating ventricular repolarization (relaxation).
A. ST segment
ST segment: Represents the period between ventricular depolarization and repolarization.
B. QRS complex
QRS complex: Represents ventricular depolarization.
C. T wave
T wave: Indicates ventricular repolarization, or relaxation, after the QRS complex.
D. P wave
P wave: Represents atrial depolarization.
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Full Explanation
A. ST segment: Represents the period between ventricular depolarization and repolarization.
B. QRS complex: Represents ventricular depolarization.
C. T wave: Indicates ventricular repolarization, or relaxation, after the QRS complex.
D. P wave: Represents atrial depolarization.
Similar Questions
A client complains of a burning sensation in the esophagus after eating. Which associated condition should the nurse most suspect?
A. Pancreatic cancer
Pancreatic cancer: Typically associated with abdominal pain, weight loss, and jaundice rather than a burning sensation in the esophagus.
B. Acute pancreatitis
Acute pancreatitis: Causes severe abdominal pain, nausea, and vomiting, but not usually a burning sensation in the esophagus.
C. Acid reflux
Acid reflux: Also known as gastroesophageal reflux disease (GERD), this condition commonly causes a burning sensation in the esophagus after eating.
D. Gastric ulcer
Gastric ulcer: Generally causes pain in the upper abdomen and may be associated with indigestion, but not specifically a burning sensation in the esophagus.
Full Explanation
A. Pancreatic cancer: Typically associated with abdominal pain, weight loss, and jaundice rather than a burning sensation in the esophagus.
B. Acute pancreatitis: Causes severe abdominal pain, nausea, and vomiting, but not usually a burning sensation in the esophagus.
C. Acid reflux: Also known as gastroesophageal reflux disease (GERD), this condition commonly causes a burning sensation in the esophagus after eating.
D. Gastric ulcer: Generally causes pain in the upper abdomen and may be associated with indigestion, but not specifically a burning sensation in the esophagus.
Of the four types of stethoscopes, which one is most unsuitable to conduct a full cardiac examination?
A. Diaphragm on one side, bell on the opposite side
Diaphragm on one side, bell on the opposite side: Suitable for a full cardiac examination, as it can assess both high and low-frequency sounds.
B. Diaphragm Only
Diaphragm Only: Less suitable for a full cardiac examination because it may not effectively capture low-frequency sounds such as certain heart murmurs.
C. Bell on one side, Diaphragm on the opposite side
Bell on one side, Diaphragm on the opposite side: Effective for a full cardiac examination, as it can assess both high and low-frequency sounds.
D. Diaphragm and bell on same side
Diaphragm and bell on same side: Allows for a complete assessment of heart sounds, though it may be less versatile than separate components on each side.
Full Explanation
A. Diaphragm on one side, bell on the opposite side: Suitable for a full cardiac examination, as it can assess both high and low-frequency sounds.
B. Diaphragm Only: Less suitable for a full cardiac examination because it may not effectively capture low-frequency sounds such as certain heart murmurs.
C. Bell on one side, Diaphragm on the opposite side: Effective for a full cardiac examination, as it can assess both high and low-frequency sounds.
D. Diaphragm and bell on same side: Allows for a complete assessment of heart sounds, though it may be less versatile than separate components on each side.
The nurse is unable to palpate the dorsalis pedis pulse on an older adult client. What would be most appropriate for the nurse to do next?
A. Auscultate the anatomic area with a stethoscope.
Auscultating the area may not provide accurate information about the pulse if it is not palpable, though it can be part of the assessment if Doppler is unavailable.
B. Use Doppler ultrasonography to locate the pulse.
Using Doppler ultrasonography is the most appropriate next step to accurately assess the pulse if it is not palpable, especially in older adults where pulses may be difficult to detect.
C. Ask another nurse to assess the pulse.
Asking another nurse to assess the pulse may not address the underlying issue of why the pulse is not palpable and does not provide additional information.
D. Document absence of dorsalis pedis pulse.
Documenting the absence of the dorsalis pedis pulse without further investigation could be premature, as Doppler ultrasonography should be used to confirm its absence.
Full Explanation
A. Auscultating the area may not provide accurate information about the pulse if it is not palpable, though it can be part of the assessment if Doppler is unavailable.
B. Using Doppler ultrasonography is the most appropriate next step to accurately assess the pulse if it is not palpable, especially in older adults where pulses may be difficult to detect.
C. Asking another nurse to assess the pulse may not address the underlying issue of why the pulse is not palpable and does not provide additional information.
D. Documenting the absence of the dorsalis pedis pulse without further investigation could be premature, as Doppler ultrasonography should be used to confirm its absence.