(Tintinalli's) COMPLETE TEST BANK WITH 400 ACTUAL
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
EXPLANATIONS (100% CORRECT VERIFIED SOLUTIONS)
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Which of the following methods is NOT an appropriate way to decrease
the pain of infiltration from a local anesthetic?
A
Buffering the anesthetic solution with sodium bicarbonate prior to
infiltration
B
Injecting through the wound margins instead of through intact skin
C
Rapid injection to minimize the duration of pain
D
,Using 1 mL of sodium bicarbonate 8.4% to buffer 29 mL of bupivacaine
0.25%
E
Warming the solution to body temperature before injecting
Analgesia, Anesthesia, and Procedural Sedation
The correct answer is C. Rapid injection to minimize the duration of
pain
Explanation:
There are multiple ways to reduce pain of infiltration of a local
anesthetic. They include slow (not fast) injection, warming the solution
to body temperature, and injecting through the margins of the wound.
Bupivacaine can be buffered as described. Buffering the anesthetic
solution with sodium bicarbonate will decrease the pain of injection.
What is the MOST common cause of cardiogenic shock?
,A
Acute aortic insufficiency
B
Aortic stenosis
C
Hypertrophic cardiomyopathy
D
Acute myocardial infarction (AMI)
E
Cardiovascular Disorders
, The correct answer is D. Acute myocardial infarction (AMI)
Explanation:
Cardiogenic shock is mostly commonly due to extensive MI with
suppressed myocardial contractility. Pump failure is the underlying
factor in most causes of cardiogenic shock (Table 54-2). Hypoperfusion,
with or without hypotension, is the unifying feature of cardiogenic
shock, regardless of etiology. During an AMI, several mechanical
complications can precipitate cardiogenic shock, including acute
myocardial regurgitation due to papillary muscle rupture, ventricular
septal defect (VSD), and free-wall rupture. Mechanical complications
cause one-fourth of the cardiogenic shock following AMI. Right
ventricular infarction can also cause cardiogenic shock due to loss of
preload. Cardiac contractility can also be severely depressed due to
sepsis, myocarditis, myocardial contusion, and cardiomyopathy.
Mechanical obstruction to forward blood flow can also lead to
cardiogenic shock, including aortic stenosis, HCM, mitral stenosis, left
atrial myxoma, and pericardial tamponade. Regurgitation of LV output
due to chordal rupture or aortic insufficiency can cause profound
cardiogenic shock.
85% of users answered correctly.
Which is TRUE about chronic pain?