Porth Pathophysiology 2026/2027 | Questions and
Answers | Comprehensive Porth's Pathophysiology
Study Guide with Solutions
Chapter 1: Concepts of Health and Disease
Question 1: A public health nurse is planning interventions based on the World
Health Organization’s definition of health. Which of the following activities best
exemplifies this definition?
A. A program that provides free blood pressure screenings at a local pharmacy.
B. A community garden project that promotes physical activity and social
connection.
C. A clinic that offers rapid strep testing for symptomatic patients.
D. A rehabilitation center that helps patients recover from hip replacement
surgery.
Correct Answer: B
Rationale: The WHO defines health as “a state of complete physical,
mental, and social well-being and not merely the absence of disease or infirmity.”
The community garden project addresses physical activity and social well-being
simultaneously, aligning with the holistic WHO definition. Option A focuses on
disease detection (secondary prevention), C on diagnosis, and D on recovery from
illness—each is valuable but narrower than the WHO’s multidimensional view.
Question 2: Which statement best characterizes the term pathogenesis?
A. The cause of a disease.
B. The study of disease incidence in a population.
C. The sequence of cellular and tissue events that lead to disease.
D. The subjective complaints reported by a patient.
Correct Answer: C
, Rationale: Pathogenesis refers to the progressive and evolutionary course
of disease—the sequence of events from the initial stimulus to the ultimate
expression of disease. Etiology is the cause (A). Epidemiology deals with incidence
(B). Symptoms are subjective complaints (D).
Question 3: A patient reports a headache, while the nurse notes an elevated
blood pressure reading. Which of the following correctly classifies these findings?
A. Headache is a sign; elevated blood pressure is a symptom.
B. Both are symptoms.
C. Headache is a symptom; elevated blood pressure is a sign.
D. Both are signs.
Correct Answer: C
Rationale: Symptoms are subjective experiences reported by the patient
(e.g., headache). Signs are objective, observable, or measurable findings (e.g.,
elevated blood pressure). Therefore, headache is a symptom and elevated blood
pressure is a sign.
Question 4: A test for a cardiac etiology of shortness of breath is positive in 99.8%
of clients who have confirmed cardiac disease, but also positive in 1.3% of clients
who do not have cardiac disease. Which statement best describes this test?
A. High specificity; low sensitivity.
B. High sensitivity; low specificity.
C. Low reliability; high validity.
D. High positive predictive value; high negative predictive value.
Correct Answer: B
Rationale: Sensitivity is the ability to correctly identify those with the
disease (true positives). A 99.8% detection rate among those with confirmed
cardiac disease indicates high sensitivity. Specificity is the ability to correctly
identify those without the disease (true negatives). A 1.3% false-positive rate
,among those without cardiac disease indicates low specificity. The test is sensitive
but not specific.
Question 5 (SATA): Which of the following are considered modifiable risk factors
for disease? Select all that apply.
A. Smoking
B. Age
C. Diet
D. Family history
E. Physical inactivity
Correct Answer: A, C, E
Rationale: Modifiable risk factors can be changed or controlled through
behavior or intervention. Smoking, diet, and physical inactivity are modifiable.
Age and family history are non-modifiable.
Question 6: A patient with asthma experiences a period in which symptoms
worsen significantly. This is best described as:
A. Remission
B. Exacerbation
C. Complication
D. Sequela
Correct Answer: B
Rationale: An exacerbation is a flare-up or worsening of disease
symptoms. Remission is a period of diminished or absent symptoms. A
complication is a secondary condition arising from a primary disease. A sequela is
a condition that follows and results from a previous disease or injury.
Question 7: Which of the following best defines incidence?
, A. The total number of existing cases of a disease in a population at a given time.
B. The number of new cases of a disease during a specified time period.
C. The number of deaths caused by a disease in a population.
D. The proportion of a population that has a particular risk factor.
Correct Answer: B
Rationale: Incidence is the number of new cases of a disease during a
specified time period. Prevalence is the total number of existing cases (new and
old) at a given time (A). Mortality is the number of deaths (C). Risk factor
prevalence is different (D).
Question 8: A patient asks the nurse, “What does my prognosis mean?” The
nurse’s best response is:
A. “It is the cause of your disease.”
B. “It is the predicted outcome or likelihood of recovery from your disease.”
C. “It is the number of new cases of your disease in the community.”
D. “It is the complication that may arise from your disease.”
Correct Answer: B
Rationale: Prognosis is the predicted outcome or likelihood of recovery
from a specific disease. Etiology is the cause (A). Incidence is the number of new
cases (C). A complication is a secondary condition (D).
Question 9: An iatrogenic disease is best defined as:
A. A disease caused by genetic inheritance.
B. A disease caused by medical treatment or diagnostic procedure.
C. A disease that occurs as a result of prolonged exposure to environmental
toxins.
D. A disease that is present at birth.
Correct Answer: B
Answers | Comprehensive Porth's Pathophysiology
Study Guide with Solutions
Chapter 1: Concepts of Health and Disease
Question 1: A public health nurse is planning interventions based on the World
Health Organization’s definition of health. Which of the following activities best
exemplifies this definition?
A. A program that provides free blood pressure screenings at a local pharmacy.
B. A community garden project that promotes physical activity and social
connection.
C. A clinic that offers rapid strep testing for symptomatic patients.
D. A rehabilitation center that helps patients recover from hip replacement
surgery.
Correct Answer: B
Rationale: The WHO defines health as “a state of complete physical,
mental, and social well-being and not merely the absence of disease or infirmity.”
The community garden project addresses physical activity and social well-being
simultaneously, aligning with the holistic WHO definition. Option A focuses on
disease detection (secondary prevention), C on diagnosis, and D on recovery from
illness—each is valuable but narrower than the WHO’s multidimensional view.
Question 2: Which statement best characterizes the term pathogenesis?
A. The cause of a disease.
B. The study of disease incidence in a population.
C. The sequence of cellular and tissue events that lead to disease.
D. The subjective complaints reported by a patient.
Correct Answer: C
, Rationale: Pathogenesis refers to the progressive and evolutionary course
of disease—the sequence of events from the initial stimulus to the ultimate
expression of disease. Etiology is the cause (A). Epidemiology deals with incidence
(B). Symptoms are subjective complaints (D).
Question 3: A patient reports a headache, while the nurse notes an elevated
blood pressure reading. Which of the following correctly classifies these findings?
A. Headache is a sign; elevated blood pressure is a symptom.
B. Both are symptoms.
C. Headache is a symptom; elevated blood pressure is a sign.
D. Both are signs.
Correct Answer: C
Rationale: Symptoms are subjective experiences reported by the patient
(e.g., headache). Signs are objective, observable, or measurable findings (e.g.,
elevated blood pressure). Therefore, headache is a symptom and elevated blood
pressure is a sign.
Question 4: A test for a cardiac etiology of shortness of breath is positive in 99.8%
of clients who have confirmed cardiac disease, but also positive in 1.3% of clients
who do not have cardiac disease. Which statement best describes this test?
A. High specificity; low sensitivity.
B. High sensitivity; low specificity.
C. Low reliability; high validity.
D. High positive predictive value; high negative predictive value.
Correct Answer: B
Rationale: Sensitivity is the ability to correctly identify those with the
disease (true positives). A 99.8% detection rate among those with confirmed
cardiac disease indicates high sensitivity. Specificity is the ability to correctly
identify those without the disease (true negatives). A 1.3% false-positive rate
,among those without cardiac disease indicates low specificity. The test is sensitive
but not specific.
Question 5 (SATA): Which of the following are considered modifiable risk factors
for disease? Select all that apply.
A. Smoking
B. Age
C. Diet
D. Family history
E. Physical inactivity
Correct Answer: A, C, E
Rationale: Modifiable risk factors can be changed or controlled through
behavior or intervention. Smoking, diet, and physical inactivity are modifiable.
Age and family history are non-modifiable.
Question 6: A patient with asthma experiences a period in which symptoms
worsen significantly. This is best described as:
A. Remission
B. Exacerbation
C. Complication
D. Sequela
Correct Answer: B
Rationale: An exacerbation is a flare-up or worsening of disease
symptoms. Remission is a period of diminished or absent symptoms. A
complication is a secondary condition arising from a primary disease. A sequela is
a condition that follows and results from a previous disease or injury.
Question 7: Which of the following best defines incidence?
, A. The total number of existing cases of a disease in a population at a given time.
B. The number of new cases of a disease during a specified time period.
C. The number of deaths caused by a disease in a population.
D. The proportion of a population that has a particular risk factor.
Correct Answer: B
Rationale: Incidence is the number of new cases of a disease during a
specified time period. Prevalence is the total number of existing cases (new and
old) at a given time (A). Mortality is the number of deaths (C). Risk factor
prevalence is different (D).
Question 8: A patient asks the nurse, “What does my prognosis mean?” The
nurse’s best response is:
A. “It is the cause of your disease.”
B. “It is the predicted outcome or likelihood of recovery from your disease.”
C. “It is the number of new cases of your disease in the community.”
D. “It is the complication that may arise from your disease.”
Correct Answer: B
Rationale: Prognosis is the predicted outcome or likelihood of recovery
from a specific disease. Etiology is the cause (A). Incidence is the number of new
cases (C). A complication is a secondary condition (D).
Question 9: An iatrogenic disease is best defined as:
A. A disease caused by genetic inheritance.
B. A disease caused by medical treatment or diagnostic procedure.
C. A disease that occurs as a result of prolonged exposure to environmental
toxins.
D. A disease that is present at birth.
Correct Answer: B
