Name: Score:
20 Multiple choice questions
Term 1 of 20
A patient with acute renal failure experiences cardiac arrest. Just before the cardiac arrest, the
patient's ECG showed peaked T waves. What might be causing the patient's cardiac arrest?
β-Blockers
The use of β-blockers is contraindicated in patients who are at risk for cardiogenic shock,
low cardiac output and acute heart failure.
90 mmHg
In patients with STEMI, IV nitroglycerin may be used when chest pain or discomfort is
recurrent or refractory to nitroglycerin administered sublingually or by spray. The IV
nitroglycerin should be titrated to maintain a systolic blood pressure of 90 mmHg or
more.
95%
When a patient presents with potential ACS, the patient should have oxygen
administered to maintain an SaO2 of at least 94%.
Hyperkalemia
Suspect hyperkalemia in all patients with acute or chronic renal failure who exhibit
a wide-complex ventricular rhythm or tall, peaked T waves on an ECG before
cardiac arrest.
,Ter 2 of 20
m
A healthcare provider initiates ventilations to ensure adequate breathing and oxygenation.
While ventilations are being performed, capnography is established to evaluate the adequacy of
the ventilations. The healthcare provider determines that ventilations are adequate based on
which end-tidal carbon dioxide (ETCO2) value?
Every 5 to 6 seconds
The team would deliver 1 ventilation every 5 to 6 seconds. Each ventilation should last
about 1 second and make the chest begin to rise.
35 to 45 mmHg
End-tidal carbon dioxide values in the range of 35 to 45 mmHg confirm adequacy
of ventilation.
Hypoglycemia
In stroke assessment, the key to secondary assessment is to rule out stroke mimics
such as hypoglycemia.
120 to 200 joules
When using a biphasic defibrillator, the energy dose should be set at 120 to 200
joules.
, Ter 3 of 20
m
A patient's capnogram reveals the following waveform. Which segment would the healthcare
provider interpret as reflecting the beginning of exhalation?
Third-degree AV block
In third-degree AV block, no electrical communication occurs between
the atria and ventricles, thus no relationship between P waves and QRS
complexes exists. The RR interval is constant. The PP interval is constant
or slightly irregular, as with sinus arrhythmia. If pacemaker cells in the AV
junction simulate ventricular contraction, the QRS complexes will be
narrow (less than 120 milliseconds in duration). Impulses that originate in
the ventricles produce wide, bizarre QRS complexes. This arrhythmia
may result from damage caused by myocardial infarction.
Atropine 0.5 mg every 4 to 5 minutes.
The ECG strip is showing bradycardia. Atropine is an anticholinergic drug
that increases sinoatrial node firing by counteracting vagus nerve action
to
increase the heart rate. It is the first-line therapy for symptomatic
bradycardia. A 0.5-mg bolus is given intravenously every 3 to 5 minutes,
up to a maximum dose of 3 mg.
Absence of discrete P waves and presence of irregularly
irregular QRS complexes.
The two key features of atrial fibrillation on ECG are the absence of
discrete P waves and the presence of irregularly irregular QRS complexes.
A-B
The A–B segment is the respiratory baseline that represents the
beginning of exhalation.
20 Multiple choice questions
Term 1 of 20
A patient with acute renal failure experiences cardiac arrest. Just before the cardiac arrest, the
patient's ECG showed peaked T waves. What might be causing the patient's cardiac arrest?
β-Blockers
The use of β-blockers is contraindicated in patients who are at risk for cardiogenic shock,
low cardiac output and acute heart failure.
90 mmHg
In patients with STEMI, IV nitroglycerin may be used when chest pain or discomfort is
recurrent or refractory to nitroglycerin administered sublingually or by spray. The IV
nitroglycerin should be titrated to maintain a systolic blood pressure of 90 mmHg or
more.
95%
When a patient presents with potential ACS, the patient should have oxygen
administered to maintain an SaO2 of at least 94%.
Hyperkalemia
Suspect hyperkalemia in all patients with acute or chronic renal failure who exhibit
a wide-complex ventricular rhythm or tall, peaked T waves on an ECG before
cardiac arrest.
,Ter 2 of 20
m
A healthcare provider initiates ventilations to ensure adequate breathing and oxygenation.
While ventilations are being performed, capnography is established to evaluate the adequacy of
the ventilations. The healthcare provider determines that ventilations are adequate based on
which end-tidal carbon dioxide (ETCO2) value?
Every 5 to 6 seconds
The team would deliver 1 ventilation every 5 to 6 seconds. Each ventilation should last
about 1 second and make the chest begin to rise.
35 to 45 mmHg
End-tidal carbon dioxide values in the range of 35 to 45 mmHg confirm adequacy
of ventilation.
Hypoglycemia
In stroke assessment, the key to secondary assessment is to rule out stroke mimics
such as hypoglycemia.
120 to 200 joules
When using a biphasic defibrillator, the energy dose should be set at 120 to 200
joules.
, Ter 3 of 20
m
A patient's capnogram reveals the following waveform. Which segment would the healthcare
provider interpret as reflecting the beginning of exhalation?
Third-degree AV block
In third-degree AV block, no electrical communication occurs between
the atria and ventricles, thus no relationship between P waves and QRS
complexes exists. The RR interval is constant. The PP interval is constant
or slightly irregular, as with sinus arrhythmia. If pacemaker cells in the AV
junction simulate ventricular contraction, the QRS complexes will be
narrow (less than 120 milliseconds in duration). Impulses that originate in
the ventricles produce wide, bizarre QRS complexes. This arrhythmia
may result from damage caused by myocardial infarction.
Atropine 0.5 mg every 4 to 5 minutes.
The ECG strip is showing bradycardia. Atropine is an anticholinergic drug
that increases sinoatrial node firing by counteracting vagus nerve action
to
increase the heart rate. It is the first-line therapy for symptomatic
bradycardia. A 0.5-mg bolus is given intravenously every 3 to 5 minutes,
up to a maximum dose of 3 mg.
Absence of discrete P waves and presence of irregularly
irregular QRS complexes.
The two key features of atrial fibrillation on ECG are the absence of
discrete P waves and the presence of irregularly irregular QRS complexes.
A-B
The A–B segment is the respiratory baseline that represents the
beginning of exhalation.
