Regardless of the specificity and sensitivity of a test, if the test results cannot be reproduced, the value and usefulness of the test are minimal. Name and briefly discuss the three (3) factors that contribute to the variation between test results of assessing diagnostic and screening tests.
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QUESTION 3
3.1. Regardless of the specificity and sensitivity of a test, if the test results cannot be
reproduced, the value and usefulness of the test are minimal. Name and briefly discuss
the three (3) factors that contribute to the variation between test results of assessing
diagnostic and screening tests.
Step by step
Solved in 3 steps
- ~Question 2. For safety and accuracy of medication being administered to the patient, one of the considerations is the three checks. Which of the following is not applicable? a. Reading the label after the medications has been administered. b. Reading the label before preparing. c. Reading the label before picking the medication in the locker. d. Reading the label after withdrawing the medication from the container ..Question 1: Suppose you have given 5 tablets weighing 449mg, 450mg, 448mg, 451mg and 453mg, respectively. Calculate 300 mg equivalent sample weight for assay. The product claim is 500 mg Vitamin C is present in each tablet. Question 2: Volume of the standard sodium edetate is 12.6 mL (calculated after the assay of Zinc Sulfate Syrup). Determine the % of potency of the drug considering the claimed dose is 11.5Question 4 i). State three (3) main differences between a conventional x-ray and CT scan in medical imaging.
- Question: 16. Overfilling a culture bottle that will be used in an automated system where bacterial growth is assessed by monitoring CD, levels can lead to a. false-negative results b. false-positive results 17. The optimal volume for blood-culture collection on adults is a. 20 mL of blood per bottle b. precisely 10 mL of blood in each of two bottles c. 20 mL of blood distributed betvveen two bottles but not exceeding 12 mL per vial d. dependent upon the patient's body weightQuestion 14 a) Radioactive decay produces ionising radiation. Like all ionising radiation this can lead to harmful effects on living tissue due to cell damage including damage to DNA, mutation and cell death. Contrast the differing health risks associated when working with alpha, beta or gamma radiation sources. b) Describe some ways in which those working with radioactive sources and people in general can be protected against the risks of radiation exposure from such sources.Question 21>In 1668, Francesco Redi performed a series of experiments on spontaneous generation. He began by putting similar pieces of meat into eight identical jars. Four jars were left open to the air, and four were sealed. He then did the same experiment with one variation: Instead of sealing four of the jars completely, he covered them with gauze (the gauze excluded the flies while allowing the meat to be exposed to air). In both experiments, he monitored the jars and recorded whether or not maggots (young flies) appeared in the meat.What hypothesis was being tested in the initial experiment with open versus sealed jars?A.The type of meat used affects the likelihood of spontaneous generation.B.Spontaneous generation can occur only if meat is exposed to air.C.Spontaneous generation is more likely during the long days of summer.D.Maggots do not arise spontaneously, but from eggs laid by adult flies.
- Question 34 A Nurse Practitioner is providing patient education to a 50-year-old woman who is taking methotrexate (MTX) for breast cancer. The nurse will instruct the patient to avoid which of the following drugs? Acetaminophen Salicylates Furosemide DigoxinQuestion 6 In the first part of the experiment, there were only a few colonies on the streptomycin positive plate. In the second part, there are a large number of colonies on the streptomycin positive plate that was inoculated with the antibiotic resistant strain. What is the most likely explanation for this difference? 1. The antibiotic resistant strain was composed of a large number of individuals with resistance to streptomycin 2. The exposure to streptomycin caused a mutation in a few individualsQuestion 6 sample result of ESR is below. a. Kwame - 34yrs -7mm/hr b. Adjoa - 55yrs - 10mm/hr c. Musa - 52yrs - 74mm/hr d. Anita - 27yrs - 40mm/hr e. Charles - 30yrs- 90mm/hr f. Chioma - 27yrs - 20mm/hr Reference ranges Males below 50yrs 0-15mm/hr Female below 50yrs 0-20mm/hr Males over 50yrs 0-20mm/hr Females over 50yrs 0-30mm/hr (I) Comment on test result a, c, d, & f (II) If you are a laboratory scientist, will you validate sample b & e? If yes why and if No why. (III) ESR is non-specific. How? (IV) Why is ESR high in females