COMPREHENSIVE CCRN ADULT EXAM
REVIEW: CRITICAL CARE TOPICS &
PRACTICE EXAM QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
What is Disseminated Intravascular Coagulation (DIC)? - ANS A pathological activation of
coagulation where blood clots consume coagulation proteins and platelets, leading to abnormal
bleeding.
What are common causes of DIC? - ANS Any cause of tissue breakdown, with sepsis being the
most common.
What are the laboratory findings associated with DIC? - ANS Decreased platelets (<100,000),
increased prothrombin time (PT), increased partial thromboplastin time (PTT), decreased
fibrinogen (<200 mg), and increased fibrin degradation products (FDP) or D-dimer.
What is the definition of anemia? - ANS A deficiency of hemoglobin caused by excessive
blood loss, cell destruction, or deficiency in red blood cell production.
What is the significance of Mean Corpuscular Volume (MCV) in anemia? - ANS MCV indicates
the average size of red blood cells; it helps classify anemia as microcytic, macrocytic, or
normocytic.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,What is the treatment for Idiopathic Thrombocytopenic Purpura (ITP)? - ANS Treatment may
not be necessary, but exacerbations can be treated with steroids; severe cases may require
immunosuppressive drugs or splenectomy.
What are the components of the immune system? - ANS Adaptive immunity, innate
immunity (including surface barriers and leukocytes), humoral immunity (IgA, IgD, IgE, IgG, IgM,
T and B cells), inflammation mediators (histamine, bradykinin, serotonin, leukotrienes,
prostaglandins), and the complement system.
What are the signs of tumor lysis syndrome (TLS)? - ANS Dehydration, seizures, cardiac
dysrhythmias, and nausea/vomiting.
What is the treatment for hypercalcemia of malignancy? - ANS Intravenous fluids (IVF) and
correction of imbalances.
What are the common reactions to blood products? - ANS Infectious/viral transfers,
hypocalcemia, hyperkalemia, decreased 2,3-diphosphoglycerate, hypothermia, transfusion-
related acute lung injury (TRALI), and transfusion-associated circulatory overload (TACO).
What is the role of Heparin in coagulation? - ANS Heparin accelerates the formation of Anti-
thrombin III, inactivates thrombin, and prevents the conversion of fibrinogen into fibrin.
What is the definition of critical-illness stress in relation to immunosuppression? - ANS It
refers to the body's impaired ability to respond to stress due to factors like broken skin barriers,
impaired gag reflex, alterations in gastric pH, malnutrition, and drug interactions.
What is the significance of the Oxyhemoglobin curve in respiratory physiology? - ANS It
describes the relationship between oxygen saturation and partial pressure of oxygen, indicating
how readily hemoglobin binds to oxygen.
What is the primary purpose of dialysis? - ANS To remove waste products and excess fluid
from the blood when the kidneys are unable to perform these functions.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is the definition of hydrocephalus? - ANS A condition characterized by an accumulation
of cerebrospinal fluid (CSF) within the ventricles of the brain, leading to increased intracranial
pressure.
What are the types of shock classified in multisystem disorders? - ANS Hypovolemic,
cardiogenic, distributive, and obstructive shock.
What is the purpose of mechanical ventilation? - ANS To assist or replace spontaneous
breathing in patients who are unable to breathe adequately on their own.
What is the significance of cranial reflexes in neurological assessment? - ANS They help
evaluate the integrity of the brainstem and the functioning of cranial nerves.
What are the common causes of acute renal failure? - ANS Hypovolemia, nephrotoxins, and
obstructive uropathy.
What is the role of pulmonary function tests (PFTs)? - ANS To assess lung function and
capacity, helping diagnose respiratory conditions.
What are common symptoms of dehydration? - ANS Seizures, cardiac dysrhythmias,
nausea/vomiting (N/V)
What is the primary treatment for dehydration? - ANS Intravenous fluids (IVF) and correction
of imbalances
What is hypercalcemia of malignancy often secondary to? - ANS Bony metastasis
What is the prognosis associated with hypercalcemia of malignancy? - ANS Poor prognosis
What should be checked to assess hypercalcemia? - ANS Ionized calcium levels
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
REVIEW: CRITICAL CARE TOPICS &
PRACTICE EXAM QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
What is Disseminated Intravascular Coagulation (DIC)? - ANS A pathological activation of
coagulation where blood clots consume coagulation proteins and platelets, leading to abnormal
bleeding.
What are common causes of DIC? - ANS Any cause of tissue breakdown, with sepsis being the
most common.
What are the laboratory findings associated with DIC? - ANS Decreased platelets (<100,000),
increased prothrombin time (PT), increased partial thromboplastin time (PTT), decreased
fibrinogen (<200 mg), and increased fibrin degradation products (FDP) or D-dimer.
What is the definition of anemia? - ANS A deficiency of hemoglobin caused by excessive
blood loss, cell destruction, or deficiency in red blood cell production.
What is the significance of Mean Corpuscular Volume (MCV) in anemia? - ANS MCV indicates
the average size of red blood cells; it helps classify anemia as microcytic, macrocytic, or
normocytic.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,What is the treatment for Idiopathic Thrombocytopenic Purpura (ITP)? - ANS Treatment may
not be necessary, but exacerbations can be treated with steroids; severe cases may require
immunosuppressive drugs or splenectomy.
What are the components of the immune system? - ANS Adaptive immunity, innate
immunity (including surface barriers and leukocytes), humoral immunity (IgA, IgD, IgE, IgG, IgM,
T and B cells), inflammation mediators (histamine, bradykinin, serotonin, leukotrienes,
prostaglandins), and the complement system.
What are the signs of tumor lysis syndrome (TLS)? - ANS Dehydration, seizures, cardiac
dysrhythmias, and nausea/vomiting.
What is the treatment for hypercalcemia of malignancy? - ANS Intravenous fluids (IVF) and
correction of imbalances.
What are the common reactions to blood products? - ANS Infectious/viral transfers,
hypocalcemia, hyperkalemia, decreased 2,3-diphosphoglycerate, hypothermia, transfusion-
related acute lung injury (TRALI), and transfusion-associated circulatory overload (TACO).
What is the role of Heparin in coagulation? - ANS Heparin accelerates the formation of Anti-
thrombin III, inactivates thrombin, and prevents the conversion of fibrinogen into fibrin.
What is the definition of critical-illness stress in relation to immunosuppression? - ANS It
refers to the body's impaired ability to respond to stress due to factors like broken skin barriers,
impaired gag reflex, alterations in gastric pH, malnutrition, and drug interactions.
What is the significance of the Oxyhemoglobin curve in respiratory physiology? - ANS It
describes the relationship between oxygen saturation and partial pressure of oxygen, indicating
how readily hemoglobin binds to oxygen.
What is the primary purpose of dialysis? - ANS To remove waste products and excess fluid
from the blood when the kidneys are unable to perform these functions.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is the definition of hydrocephalus? - ANS A condition characterized by an accumulation
of cerebrospinal fluid (CSF) within the ventricles of the brain, leading to increased intracranial
pressure.
What are the types of shock classified in multisystem disorders? - ANS Hypovolemic,
cardiogenic, distributive, and obstructive shock.
What is the purpose of mechanical ventilation? - ANS To assist or replace spontaneous
breathing in patients who are unable to breathe adequately on their own.
What is the significance of cranial reflexes in neurological assessment? - ANS They help
evaluate the integrity of the brainstem and the functioning of cranial nerves.
What are the common causes of acute renal failure? - ANS Hypovolemia, nephrotoxins, and
obstructive uropathy.
What is the role of pulmonary function tests (PFTs)? - ANS To assess lung function and
capacity, helping diagnose respiratory conditions.
What are common symptoms of dehydration? - ANS Seizures, cardiac dysrhythmias,
nausea/vomiting (N/V)
What is the primary treatment for dehydration? - ANS Intravenous fluids (IVF) and correction
of imbalances
What is hypercalcemia of malignancy often secondary to? - ANS Bony metastasis
What is the prognosis associated with hypercalcemia of malignancy? - ANS Poor prognosis
What should be checked to assess hypercalcemia? - ANS Ionized calcium levels
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
