The normal flora of microorganisms in the intestines is an example of:
a. colonization c. pathogenicity
b. infection d. virulence
A
The multiplication of microorganisms that occurs on or within a host, without causing cellular injury, is colonization.
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The laboratory technologists are discussing a new blood test that helps establish a differential diagnosis between shortness of breath with a cardiac etiology and shortness of breath with a respiratory/pulmonary etiology
A positive result is purported to indicate a cardiac etiology. The marketers of the test report that 99.8% of patients who have confirmed cardiac etiologies test positive in the test. However, 1.3% of patients who do not have cardiac etiologies for their shortness of breath also test positive. Which of the following statements best characterizes this blood test? A) Low validity; high reliability B) High sensitivity; low specificity C) High specificity; low reliability D) High sensitivity; low reliability
The nurse is caring for a patient with an increasing preload. The nurse realizes that which of the following will occur with this increase in preload?
1. stroke volume will decrease 2. stroke volume will not be affected 3. stroke volume will increase only if the heart rate increases 4. stroke volume will increase
Order: D5W 1,000 mL IV at 50 mL/h for 20 hours. The initial flow rate was correctly set at 50 mcgtt/min. After five hours, 600 mL remain to be infused. The infusion is ahead of schedule. Compute the new flow rate in mcgtt/min
so that the infusion will finish on time. If flow rates may not be adjusted by more than 25% of the original rate, to what rate would you reset the drip rate, or would you contact the prescriber instead? 1. Contact the prescriber. 2. 40 mcgtt/min. 3. 12 mcgtt/min. 4. 2.4 mcgtt/min.
A common medication that is used for children with Fatty Liver disease is:
1. Metformin. 2. Vitamin C. 3. Prilosec. 4. Probiotics.