Verified!!
A patient with suspected acute coronary syndromes (ACS) is placed on a
cardiac monitor. The patient is complaining of dyspnea and is given
supplemental oxygen. The provider determines that the oxygen is effective
based on which SaO2 level? Correct ans - When a patient presents
with potential ACS, the patient should have oxygen administered to maintain
an SaO2 of at least 94%.
A patient experiences cardiac arrest, and the resuscitation team initiates
ventilations using a bag-valve-mask (BVM) resuscitator. The development of
which condition during the provision of care would lead the team to suspect
that improper BVM technique is being used? Correct ans -
Complications can occur with the use of a BVM resuscitator due to improper
technique. Delivering excessive volume or ventilating too fast creates
excessive pressure that can damage the airways, lungs and other organs.
Excessive volume can lead to tension pneumothorax.
Assessment of a patient reveals an ETCO2 level of 55 mmHg and an arterial
oxygen saturation (SaO2) level of 88%. The provider would interpret these
findings as indicative of which condition? Correct ans - An SaO2 level
of less than 90% (PaO2 of less than 50 mmHg) accompanied by ETCO2
values greater than 50 mmHg is indicative of respiratory failure.
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? Correct ans - End-tidal carbon dioxide
values in the range of 35 to 45 mmHg confirm adequacy of ventilation.
A patient comes to the emergency department complaining of palpitations
and "some shortness of breath." Cardiac monitoring is initiated and reveals
the following ECG rhythm strip. The provider interprets this strip as
indicating which arrhythmia? Correct ans - In atrial flutter, atrial
contraction occurs at such a rapid rate that discrete P waves separated by a
flat baseline cannot be seen on the strip. Instead, the baseline continually
rises and falls, producing the "flutter" waves. In leads II and III, the flutter
waves may be quite prominent, creating a "sawtooth" pattern. Because of
the volume of atrial impulses, the AV node allows only some of the impulses
to pass through to the ventricles. In atrial flutter, a 2:1 ratio is the most
common (i.e., for every two flutter waves, only one impulse passes through
the AV node to generate a QRS complex). Ratios of 3:1 and 4:1 are also
frequently seen.
, A person suddenly collapses while sitting in the sunroom of a healthcare
facility. A healthcare provider observes the event and hurries over to assess
the situation. The healthcare provider performs which assessment first?
Correct ans - A systematic approach to assessment is necessary. The
healthcare provider should first perform a rapid assessment. A rapid
assessment is a quick visual survey to ensure safety, to form an initial
impression about the patient's condition, and to check for responsiveness,
breathing and a pulse if the patient appears to be unresponsive. This would
be followed by a primary assessment and then a secondary assessment.
A 35-year-old female patient's ECG is consistent with STEMI. The ECG reveals
a new ST-segment elevation at the J point in leads V2 and V3 of at least
which size? Correct ans - New ST-segment elevation at the J point in
leads V2 and V3 of at least 0.15 mV (1.5 mm) in women 40 years or younger
is considered diagnostic of STEMI.
An ECG strip of a patient in the emergency department reveals the following
rhythm. Which feature would the healthcare provider interpret as indicating
atrial fibrillation? Correct ans - 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 patient presents to the emergency department with mild to moderate
recurrent chest pain, without any nausea or vomiting. A 12-lead ECG is
obtained and shows ST-segment depression with transient T-wave elevation
indicative of NSTE-ACS. Cardiac enzyme levels are obtained and are not
elevated. These findings suggest which condition? Correct ans - A
patient who presents with ECG findings consistent with NSTE-ACS and does
not have elevated cardiac serum markers is to be considered as having
unstable angina.
A healthcare provider is establishing cardiac monitoring using a five-
electrode system. The healthcare provider demonstrates proper use of the
system by placing the green electrode in which location? Correct ans -
In a five-electrode cardiac monitoring system, the green electrode should be
placed on the lower right abdomen.
A resuscitation team is debriefing following a recent event. A patient
experienced cardiac arrest, and advanced cardiac life support was initiated.
The patient required the placement of an advanced airway to maintain
airway patency. Which statement indicates that the team performed high-
quality CPR? Correct ans - When an advanced airway has been placed
in a patient who is in cardiac arrest, compressions and ventilations are
delivered continuously with no interruptions. One provider delivers 1