NURS 300 EXAM 3 2026/2027 | NURSING STUDY GUIDE, PRACTICE
QUESTIONS, ANSWERS & EXAM REVIEW
Potassium (K+) - correct answer ✔✔3.5 - 5
Calcium (Ca2+) - correct answer ✔✔9 - 10.5
Magnesium (Mg2+) - correct answer ✔✔1.3 - 2.1
pH - correct answer ✔✔7.35 - 7.45
Co2 - correct answer ✔✔35 - 45
O2 - correct answer ✔✔80 - 100
HCO3 (bicarbonate) - correct answer ✔✔22 - 26
Chlorine (Cl) - correct answer ✔✔98 - 106
Sodium (Na) - correct answer ✔✔136 - 145
What is a patient with a NGT to suction at risk for? - correct answer ✔✔Metabolic alkalosis because
were sucking out all of the stomach acid
How do we know pt has a respiratory problem based off of labs? - correct answer ✔✔opposite
directions of pH and CO2, normal HCO3
How do we know pt has a metabolic problem based off of labs? - correct answer ✔✔same direction of
pH and HCO3, normal CO2
How do we differentiate between alkalosis and acidoisis? - correct answer ✔✔Alakalosis = pH is higher
than 7.45
Acidosis = pH is lower than 7.35
Name the problem:
pH 7.25, CO2 36, HCO3 18 - correct answer ✔✔Metabolic Acidosis
Name the problem:
pH: 7.58, CO2 30, HCO3 23 - correct answer ✔✔Respiratory Alkalosis
What is the best way to do a fluid volume assessment? - correct answer ✔✔daily weight done in the AM
and continuing this every day
, What is Hyperkalemia? - correct answer ✔✔excess potassium
What is the main concern with hyperkalemia? - correct answer ✔✔cardiac system, heart!
What are the s/s of hyperkalemia? - correct answer ✔✔Muscle spasms, urine output decreases,
respiratory failure, decreased cardiac contraction, early stage muscle spasms, rhythm cardiac changes
Urinary system organs - correct answer ✔✔kidneys, ureters, urinary bladder, urethra
Nocturia - correct answer ✔✔excessive urination at night
Interventions for nocturia - correct answer ✔✔limit fluid and caffeine about 2 hours before bed time
What position is best for males when they have urine retention? - correct answer ✔✔standing
What is stress incontinence? - correct answer ✔✔leaking when sneezing, coughing, laughing, etc.
What are some causes of increased peristalsis? - correct answer ✔✔stress, meds, diarrhea
What can cause black tarry stool - correct answer ✔✔iron supplements
Utalitarianism - correct answer ✔✔Greatest good for greatest amount of people, cost and benefit
analysis (value is determined by usefulness like immunizations)
Deontology - correct answer ✔✔defines actions as right or wrong based on their adherence to rule and
principles such as fidelity , truthfulness & justice
Care - correct answer ✔✔role of feelings
Ethics definition - correct answer ✔✔study of what is right and wrong
Difference between ethical and legal issues - correct answer ✔✔ethical: looking at behavior & character
legal: laws
morals - correct answer ✔✔judgement about behavior, based on specific beliefs
bioethics - correct answer ✔✔branch of ethics (transplants, genetic testing, QOL)
Autonomy - correct answer ✔✔freedom from external control or influence; independence
beneficence - correct answer ✔✔doing good
Nonmaleficence - correct answer ✔✔do no harm
justice - correct answer ✔✔fairness & distribution of resources
QUESTIONS, ANSWERS & EXAM REVIEW
Potassium (K+) - correct answer ✔✔3.5 - 5
Calcium (Ca2+) - correct answer ✔✔9 - 10.5
Magnesium (Mg2+) - correct answer ✔✔1.3 - 2.1
pH - correct answer ✔✔7.35 - 7.45
Co2 - correct answer ✔✔35 - 45
O2 - correct answer ✔✔80 - 100
HCO3 (bicarbonate) - correct answer ✔✔22 - 26
Chlorine (Cl) - correct answer ✔✔98 - 106
Sodium (Na) - correct answer ✔✔136 - 145
What is a patient with a NGT to suction at risk for? - correct answer ✔✔Metabolic alkalosis because
were sucking out all of the stomach acid
How do we know pt has a respiratory problem based off of labs? - correct answer ✔✔opposite
directions of pH and CO2, normal HCO3
How do we know pt has a metabolic problem based off of labs? - correct answer ✔✔same direction of
pH and HCO3, normal CO2
How do we differentiate between alkalosis and acidoisis? - correct answer ✔✔Alakalosis = pH is higher
than 7.45
Acidosis = pH is lower than 7.35
Name the problem:
pH 7.25, CO2 36, HCO3 18 - correct answer ✔✔Metabolic Acidosis
Name the problem:
pH: 7.58, CO2 30, HCO3 23 - correct answer ✔✔Respiratory Alkalosis
What is the best way to do a fluid volume assessment? - correct answer ✔✔daily weight done in the AM
and continuing this every day
, What is Hyperkalemia? - correct answer ✔✔excess potassium
What is the main concern with hyperkalemia? - correct answer ✔✔cardiac system, heart!
What are the s/s of hyperkalemia? - correct answer ✔✔Muscle spasms, urine output decreases,
respiratory failure, decreased cardiac contraction, early stage muscle spasms, rhythm cardiac changes
Urinary system organs - correct answer ✔✔kidneys, ureters, urinary bladder, urethra
Nocturia - correct answer ✔✔excessive urination at night
Interventions for nocturia - correct answer ✔✔limit fluid and caffeine about 2 hours before bed time
What position is best for males when they have urine retention? - correct answer ✔✔standing
What is stress incontinence? - correct answer ✔✔leaking when sneezing, coughing, laughing, etc.
What are some causes of increased peristalsis? - correct answer ✔✔stress, meds, diarrhea
What can cause black tarry stool - correct answer ✔✔iron supplements
Utalitarianism - correct answer ✔✔Greatest good for greatest amount of people, cost and benefit
analysis (value is determined by usefulness like immunizations)
Deontology - correct answer ✔✔defines actions as right or wrong based on their adherence to rule and
principles such as fidelity , truthfulness & justice
Care - correct answer ✔✔role of feelings
Ethics definition - correct answer ✔✔study of what is right and wrong
Difference between ethical and legal issues - correct answer ✔✔ethical: looking at behavior & character
legal: laws
morals - correct answer ✔✔judgement about behavior, based on specific beliefs
bioethics - correct answer ✔✔branch of ethics (transplants, genetic testing, QOL)
Autonomy - correct answer ✔✔freedom from external control or influence; independence
beneficence - correct answer ✔✔doing good
Nonmaleficence - correct answer ✔✔do no harm
justice - correct answer ✔✔fairness & distribution of resources
