CCTC NATCO EXAM ULTIMATE QUESTION BANK | COMPLETE 200 REAL
EXAM-STYLE QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) GRADED A+ | COMPREHENSIVE
NATCO CCTC BOARD
1. Which of the following is the primary physiological trigger for the "autonomic
storm" following severe brain injury?
A. Hypoxia
B. Systemic hypotension
C. Loss of cortical inhibition of the hypothalamus
D. Hyperthermia
Correct Answer: C
Rationale: Increased intracranial pressure causes brainstem herniation, leading to
loss of cortical inhibition and a massive sympathetic surge (autonomic storm),
causing hypertension, tachycardia, and vasoconstriction.
2. Which of the following is an absolute contraindication to performing the
apnea test for brain death determination?
A. Core temperature of 36.5°C
B. Systolic BP of 100 mmHg
C. PaCO2 of 30 mmHg
D. All of the above
Correct Answer: C
,Rationale: The apnea test requires a baseline PaCO2 of 35-45 mmHg to be valid
and safe. A PaCO2 of 30 mmHg is below this threshold, making the test invalid.
3. A positive apnea test is defined as:
A. PaO2 < 60 mmHg with no respiratory effort
B. PaCO2 ≥ 60 mmHg or a 20 mmHg increase from baseline with no respiratory
effort
C. SpO2 < 88% with no respiratory effort
D. Heart rate drop > 20% with no respiratory effort
Correct Answer: B
Rationale: A positive apnea test confirms brain death by demonstrating
hypercapnia (the primary respiratory drive stimulus) without any respiratory
effort.
4. Which ancillary test is most commonly used when the clinical exam or apnea
test cannot be safely completed?
A. EEG
B. Transcranial Doppler
C. Four-vessel cerebral angiography
D. Nuclear medicine cerebral blood flow scan
Correct Answer: D
Rationale: The radionuclide cerebral blood flow scan (nuclear scan) is the most
commonly used ancillary test in this scenario.
5. Which of the following diagnoses is an absolute CONTRAINDICATION to heart
transplantation?
A. Pulmonary hypertension with fixed resistance > 6 Wood units
,B. HCV antibody positive
C. Sarcoidosis
D. Hemochromatosis
Correct Answer: A
Rationale: Fixed pulmonary hypertension with a pulmonary vascular resistance > 6
Wood units is an absolute contraindication due to risk of right heart failure in the
donor heart.
6. A liver transplant recipient with hepatitis C presents with elevated liver
enzymes. A liver biopsy meets grade II Banff criteria. The coordinator should
suspect:
A. CMV infection
B. Rejection episode
C. Recurrent hepatitis C
D. Bile duct obstruction
Correct Answer: B
Rationale: Banff criteria are used to grade the severity of rejection in liver
biopsies. Grade II indicates a rejection episode.
7. A major component of cell-mediated rejection include lymphocytes derived
from:
A. T cells
B. B cells
C. Macrophages
D. Granulocytes
, Correct Answer: A
Rationale: Cell-mediated rejection is primarily driven by T lymphocytes.
8. At 14 days post-transplant, a kidney transplant patient's creatinine level has
risen from 1.3 to 1.9 mg/dL. The patient has experienced a weight gain of 1.5 kg
over the past five days. Which test should the transplant coordinator anticipate
FIRST?
A. Abdominal CT scan
B. Kidney biopsy
C. Bladder scan
D. Kidney ultrasound
Correct Answer: D
Rationale: A kidney ultrasound is the first test to perform to rule out obstructive
uropathy or fluid collections, which are common causes of early post-transplant
renal dysfunction.
9. In the adolescent population, the MOST common cause of graft loss after the
first year of transplantation is:
A. Nonadherence
B. Viral infection
C. Bacterial infection
D. Recurrent disease
Correct Answer: A
Rationale: Nonadherence to the immunosuppressive regimen is the leading cause
of late graft loss in adolescent transplant recipients.
EXAM-STYLE QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) GRADED A+ | COMPREHENSIVE
NATCO CCTC BOARD
1. Which of the following is the primary physiological trigger for the "autonomic
storm" following severe brain injury?
A. Hypoxia
B. Systemic hypotension
C. Loss of cortical inhibition of the hypothalamus
D. Hyperthermia
Correct Answer: C
Rationale: Increased intracranial pressure causes brainstem herniation, leading to
loss of cortical inhibition and a massive sympathetic surge (autonomic storm),
causing hypertension, tachycardia, and vasoconstriction.
2. Which of the following is an absolute contraindication to performing the
apnea test for brain death determination?
A. Core temperature of 36.5°C
B. Systolic BP of 100 mmHg
C. PaCO2 of 30 mmHg
D. All of the above
Correct Answer: C
,Rationale: The apnea test requires a baseline PaCO2 of 35-45 mmHg to be valid
and safe. A PaCO2 of 30 mmHg is below this threshold, making the test invalid.
3. A positive apnea test is defined as:
A. PaO2 < 60 mmHg with no respiratory effort
B. PaCO2 ≥ 60 mmHg or a 20 mmHg increase from baseline with no respiratory
effort
C. SpO2 < 88% with no respiratory effort
D. Heart rate drop > 20% with no respiratory effort
Correct Answer: B
Rationale: A positive apnea test confirms brain death by demonstrating
hypercapnia (the primary respiratory drive stimulus) without any respiratory
effort.
4. Which ancillary test is most commonly used when the clinical exam or apnea
test cannot be safely completed?
A. EEG
B. Transcranial Doppler
C. Four-vessel cerebral angiography
D. Nuclear medicine cerebral blood flow scan
Correct Answer: D
Rationale: The radionuclide cerebral blood flow scan (nuclear scan) is the most
commonly used ancillary test in this scenario.
5. Which of the following diagnoses is an absolute CONTRAINDICATION to heart
transplantation?
A. Pulmonary hypertension with fixed resistance > 6 Wood units
,B. HCV antibody positive
C. Sarcoidosis
D. Hemochromatosis
Correct Answer: A
Rationale: Fixed pulmonary hypertension with a pulmonary vascular resistance > 6
Wood units is an absolute contraindication due to risk of right heart failure in the
donor heart.
6. A liver transplant recipient with hepatitis C presents with elevated liver
enzymes. A liver biopsy meets grade II Banff criteria. The coordinator should
suspect:
A. CMV infection
B. Rejection episode
C. Recurrent hepatitis C
D. Bile duct obstruction
Correct Answer: B
Rationale: Banff criteria are used to grade the severity of rejection in liver
biopsies. Grade II indicates a rejection episode.
7. A major component of cell-mediated rejection include lymphocytes derived
from:
A. T cells
B. B cells
C. Macrophages
D. Granulocytes
, Correct Answer: A
Rationale: Cell-mediated rejection is primarily driven by T lymphocytes.
8. At 14 days post-transplant, a kidney transplant patient's creatinine level has
risen from 1.3 to 1.9 mg/dL. The patient has experienced a weight gain of 1.5 kg
over the past five days. Which test should the transplant coordinator anticipate
FIRST?
A. Abdominal CT scan
B. Kidney biopsy
C. Bladder scan
D. Kidney ultrasound
Correct Answer: D
Rationale: A kidney ultrasound is the first test to perform to rule out obstructive
uropathy or fluid collections, which are common causes of early post-transplant
renal dysfunction.
9. In the adolescent population, the MOST common cause of graft loss after the
first year of transplantation is:
A. Nonadherence
B. Viral infection
C. Bacterial infection
D. Recurrent disease
Correct Answer: A
Rationale: Nonadherence to the immunosuppressive regimen is the leading cause
of late graft loss in adolescent transplant recipients.
