A 7-year-old Hispanic male is referred to the hematology consult service by his pediatrician because of concern for hemoglobinopathy. In his records, you find a hemoglobin electrophoresis performed last year which shows hemoglobin A 78% and hemoglobin F 22%. His complete blood count is normal, and he has normal growth and development. Which of the following is true for this patient?
Rationale:
Hereditary persistence of fetal hemoglobin results in pancellular hemoglobin F distribution. This condition allows for elevated levels of hemoglobin F throughout the red blood cells, which aligns with the patient’s electrophoresis results and reflects normal developmental patterns in children.
A: There is no diagnosis. These values are not considered normal, as the elevated hemoglobin F indicates a potential underlying condition that warrants further investigation.
B: He has delta-beta thalassemia because he has an elevated hemoglobin F level. While elevated hemoglobin F can occur in thalassemia, it does not definitively indicate this diagnosis without other findings.
C: Delta-beta thalassemia does not cause microcytosis. This statement oversimplifies the condition, as some patients may exhibit microcytosis, and the presence of elevated hemoglobin F complicates this interpretation.
When assessing a client with a disorder of the hematopoietic or the lymphatic system, why is it important for the nurse to obtain a dietary history?
Rationale:
Compromised nutrition interferes with the production of blood cells and hemoglobin. A thorough dietary history helps identify nutritional deficiencies or imbalances that could exacerbate existing hematologic or lymphatic disorders, ultimately guiding appropriate interventions.
B: Diet consisting of excessive fat does not specifically hinder blood cell or hemoglobin production. While unhealthy fats can impact overall health, they are not directly linked to these blood components.
C: Inconsistent dieting may affect overall health, but it does not singularly disrupt blood cell or hemoglobin production. Nutritional deficiencies are more relevant to the functioning of the hematopoietic system.
D: Diet consisting of excessive iron and protein elements does not uniformly interfere with blood cell production. In fact, adequate iron and protein are often essential for the synthesis of hemoglobin and blood cells.
Which of the following is false regarding Burkitt's lymphoma?
Rationale:
Burkitt's lymphoma is associated with a translocation of the c-myc gene on chromosome 8, not chromosome 18. This genetic alteration plays a crucial role in the pathogenesis of the disease.
B: Usually presents with abdominal involvement in HIV patients. Abdominal manifestations are common in Burkitt's lymphoma, especially in immunocompromised individuals like those with HIV.
C: Common in Africa children due to Epstein Barr infection after malaria exposure. While Burkitt's lymphoma is prevalent in African children, the link to malaria and Epstein Barr is not the sole factor.
D: Histologically characterized by a 'starry sky' appearance. The 'starry sky' pattern is a hallmark histological feature of Burkitt's lymphoma, indicative of the high proliferation of cells.
A patient who is taking warfarin (Coumadin) 5 mg daily has an international normalized ratio (INR) of 2.5. It is time to administer the next dose of Coumadin. What should the nurse do?
Rationale:
Administer the daily Coumadin as ordered. The INR of 2.5 is within the therapeutic range for patients on warfarin, indicating effective anticoagulation. Therefore, it is appropriate to continue the prescribed dosage without any adjustments at this time.
A: Notify the physician STAT. An INR of 2.5 does not necessitate immediate physician notification, as it falls within acceptable limits for warfarin therapy.
B: Hold the dose of Coumadin. Holding the dose is unnecessary since the INR is not elevated beyond the therapeutic range, suggesting that the current dose remains safe and effective.
C: Prepare to administer vitamin K. Vitamin K is indicated only for significantly elevated INR levels, typically above 4.0, making preparation unwarranted at an INR of 2.5.
A home health nurse is caring for a patient with multiple myeloma. Which of the following interventions should the nurse prioritize when addressing the patient's severe bone pain?
Rationale:
Helping the patient manage the opioid analgesic regimen. This intervention is crucial as it directly addresses severe bone pain associated with multiple myeloma, ensuring optimal pain control and enhancing the patient's quality of life.
A: Implementing distraction techniques. While distraction can provide temporary relief, it does not address the underlying pain from multiple myeloma and may not be sufficient for severe discomfort.
B: Educating the patient about the effective use of hot and cold packs. Although helpful for minor pain relief, this method may not provide adequate management for the severe and persistent pain typical in this condition.
C: Teaching the patient to use NSAIDs effectively. NSAIDs may not be appropriate due to potential kidney issues in multiple myeloma patients and could be less effective compared to opioid analgesics for severe pain.
A 17-year-old female presents with cervical adenopathy and a history of daily fevers and drenching night sweats. A biopsy is performed and reveals classic Hodgkin lymphoma. Which of the following is least appropriate as part of the staging workup?
Rationale:
D: Lumbar puncture and cerebrospinal fluid (CSF) analysis is least appropriate for staging Hodgkin lymphoma, as this cancer typically does not involve the central nervous system, making this procedure unnecessary for staging.
A: Chest x-ray provides essential information about mediastinal lymphadenopathy and is a standard initial imaging technique for staging lymphoma.
B: CT scan of chest, abdomen, and pelvis is crucial for identifying the extent of disease involvement and assessing lymph node enlargement in Hodgkin lymphoma.
C: Functional imaging (PET scan) is integral for evaluating metabolic activity of lymphoma lesions and can help in assessing treatment response and disease staging.
You have a new patient consult in clinic this morning. The referral packet includes the newborn screen report, which is flagged abnormal hemoglobinopathy screen, F, A, Bart's, refer to hematology, and a complete blood count done at 4 years of age with a hemoglobin of 10 g/dL and an MCV of 68. The pediatrician has informed the parents the child has some form of alpha thalassemia. The older brother had the same newborn screen results but had a normal complete blood count when checked. The mother wants to know why her second child has an abnormal complete blood count when she and her husband do not have any blood problems. How would you respond to the child's mother?
Rationale:
The child inherited a trans-deletion genotype alpha thalassemia trait due to both parents being silent carriers, each contributing a deleted alpha globin allele. This results in the child's abnormal complete blood count.
B: The mother has cis deletion alpha thalassemia and the father has no alpha globin deletion, which cannot explain the abnormal count seen in the child.
C: Neither parent having an alpha globin deletion implies a spontaneous mutation, which is unlikely given the family history of similar newborn screen results.
D: Both parents carrying cis deletions would lead to different inheritance patterns, not the trans-deletion genotype affecting this child’s abnormal complete blood count.
The main vector transmitting malaria in Sabah is Anopheles balabacensis. This vector breeds in
Rationale:
Anopheles balabacensis breeds in temporary collecting of water in jungles. This environment provides suitable conditions for mosquito development, offering stagnant water that is essential for their lifecycle and reproduction.
A: Artificial containers in urban centres. While urban settings may harbor mosquitoes, Anopheles balabacensis specifically thrives in natural jungle settings, not man-made water sources.
B: Drains. Drains typically contain flowing water, which is not conducive for the breeding of Anopheles balabacensis, as they prefer stagnant water sources for reproduction.
D: Rock pools in control areas. Rock pools lack the necessary conditions for breeding, as they often experience evaporation and fluctuating water levels, unsuitable for Anopheles balabacensis.
A 40 year old patient is presented with unilateral palpebral edema and ipsilateral lymphadenopathy. He later develops megaesophagus and megacolon as complications. Which of the following vector is responsible for this parasitic infection?
Rationale:
C: Rhodnius prolixus is the vector responsible for the parasitic infection presenting with unilateral palpebral edema and complications like megaesophagus and megacolon, commonly associated with Chagas disease caused by Trypanosoma cruzi.
A: Glossina morsitans transmits trypanosomiasis, primarily affecting the central nervous system and causing sleeping sickness, not the symptoms described in this case.
B: Ixodes scapularis is known for Lyme disease transmission, mainly associated with joint and neurological issues, making it irrelevant to the symptoms presented.
D: Simulium damnosum is the vector for river blindness, leading to ocular complications, which do not align with the patient's symptoms of edema and gastrointestinal issues.
A 36-year-old woman presented with weakness, lassitude, and feeling easily tired. Her bone marrow aspirate showed 15% myeloblasts and reduced erythropoiesis. The most likely cause is
Rationale:
D: Myelodysplastic syndrome is characterized by ineffective hematopoiesis leading to reduced erythropoiesis and increased myeloblasts in the bone marrow, aligning with the symptoms of weakness and fatigue presented by the patient.
A: Acute myeloid leukemia typically presents with a higher percentage of myeloblasts and more aggressive symptoms, making it less compatible with the observed 15% myeloblasts and fatigue.
B: Acute lymphoid leukemia primarily affects lymphoid cells and often presents with lymphadenopathy or splenomegaly, which are not indicated in this case, thus suggesting an alternate diagnosis.
C: Myelofibrosis usually involves fibrosis of the bone marrow leading to extramedullary hematopoiesis and splenomegaly, rather than the specific myeloblast percentage and erythropoiesis reduction observed here.
The following pathological features is true regarding non-Hodgkin lymphoma (NHL)
Rationale:
B cell phenotype is more common. Non-Hodgkin lymphoma predominantly arises from B cells, accounting for approximately 85% of all cases. This characteristic establishes its classification and differentiation from other lymphoproliferative disorders, emphasizing the prevalence of B cell involvement in NHL pathology and its clinical implications.
A: Classical Reed-Sternberg (RS) cells are neoplastic cells. RS cells are characteristic of Hodgkin lymphoma, not non-Hodgkin lymphoma, which does not exhibit this specific neoplastic cell type.
C: Contiguous group of lymph nodes are affected. Non-Hodgkin lymphoma often presents with non-contiguous lymph node involvement, leading to dissemination beyond localized areas, contrasting with Hodgkin lymphoma’s contiguous spread pattern.
D: It is not associated with leukemic phase of disease. Non-Hodgkin lymphoma can indeed have a leukemic phase, particularly in certain subtypes, making this statement misleading regarding its clinical manifestations.
Platelet aggregation is an important event in hemostasis. Which of the following statement is true for platelet aggregation in vascular injury?
Rationale:
Platelets change their shape during the process. This transformation is crucial for facilitating platelet aggregation, allowing them to better adhere to the damaged vascular wall and each other, thereby promoting the formation of a stable platelet plug essential for hemostasis.
A: There will be initial vasodilation. Initial vasodilation does not represent a characteristic of platelet aggregation; rather, it often occurs to enhance blood flow following vascular injury.
B: Clotting factors play no role in its formation. Clotting factors are integral to the hemostatic process, influencing many aspects of blood coagulation beyond just platelet aggregation.
D: Serotonin stimulates platelet aggregation. While serotonin can have effects on the vascular system, it does not directly stimulate the aggregation of platelets, which relies primarily on other factors for activation.
The typical Reed-Sternberg cells are either infrequent or absent. Instead, lymphocytic and histiocytic cells or 'popcorn cells' are seen within a background of inflammatory cells, which are predominantly benign lymphocytes. Which type of Hodgkin's lymphoma best suit the description?
Rationale:
Lymphocyte predominance describes Hodgkin's lymphoma characterized by the presence of 'popcorn cells' and a predominance of benign lymphocytes, with Reed-Sternberg cells being either infrequent or absent.
A: Nodular sclerosis features a distinctive fibrous background and typical Reed-Sternberg cells, differing significantly from the cell types described.
B: Mixed cellularity usually presents a mix of various cell types, including Reed-Sternberg cells, which contrasts with the predominance of lymphocytes mentioned.
C: Lymphocyte depleted is characterized by a scarcity of lymphocytes and abundant Reed-Sternberg cells, opposing the description of lymphocytic predominance provided in the context.
A laboratory finding of granulocytosis
Rationale:
Increased numbers of granulocytes in blood and bone marrow. Granulocytosis is characterized by an elevated count of granulocytes, indicating a response to various stimuli, including infections or bone marrow disorders, thus directly correlating with the definition of the condition.
A: Complete absence of peripheral blood granulocytes and their precursors in the bone marrow. This describes agranulocytosis, not granulocytosis, reflecting a lack rather than an increase in granulocytes.
B: Acute bacterial infections. While such infections can lead to granulocytosis, this option does not encompass the broader definition, which includes other causes beyond just infections.
C: Myeloproliferative disorders. Although these may cause granulocytosis, they are specific conditions rather than a direct definition, failing to capture the complete picture of granulocyte elevation.
Using light pressure with the index and middle fingers, the nurse cannot palpate any of the patient's superficial lymph nodes. How should the nurse respond to this assessment?
Rationale:
Record this finding as normal.
The absence of palpable superficial lymph nodes in a healthy adult is a normal finding. Lymph nodes are typically small, soft, and non-tender, making them difficult to detect unless they are inflamed or enlarged due to infection or disease. Therefore, not feeling them with light pressure is an expected assessment outcome, indicating no immediate concern for pathology.
B: Reassess the lymph nodes using deeper pressure
Lymph node palpation typically involves light to moderate pressure to detect superficial nodes. Using excessive deep pressure could obscure small nodes or cause discomfort without providing more accurate diagnostic information, making it an inappropriate immediate next step.
C: Ask the patient about any history of radiation therapy
While radiation therapy can affect lymph nodes, asking about it is premature when the initial assessment reveals a normal finding. This inquiry becomes relevant only if abnormalities were detected, warranting further exploration into potential causes.
D: Notify the health care provider that x-rays of the nodes will be necessary
Requesting imaging like x-rays for lymph nodes is an invasive and unwarranted action when the initial physical assessment is entirely normal. Imaging is reserved for confirmed abnormalities or specific clinical indications, not routine non-palpation.
A 9-year-old boy presents to the emergency department with emesis and headache of 3 weeks' duration. MRI reveals a large heterogeneous mass in the cerebellum. He undergoes a resection, and the pathology is most consistent with a classic medulloblastoma. Which of the following findings would classify the patient as a high-risk medulloblastoma?
Rationale:
A presurgical spine MRI that reveals bulky tumor in the spine would classify the patient as a high-risk medulloblastoma.
The presence of bulky metastatic disease in the spine, as indicated by a presurgical MRI, is a critical factor for classifying medulloblastoma as high-risk. Metastatic dissemination, particularly extensive leptomeningeal spread (M+ status), signifies advanced disease and necessitates more aggressive therapeutic approaches. This finding directly impacts risk stratification, guiding treatment intensity to improve patient outcomes by addressing widespread tumor burden.
A: Elevated serum
In the laboratory diagnosis of leishmaniasis, the expected parasite stage in vitro is
Rationale:
In the laboratory diagnosis of leishmaniasis, the expected parasite stage in vitro is Promastigote.
Leishmania parasites differentiate into promastigotes when cultured in vitro from patient samples. This flagellated, motile stage thrives in artificial culture media, mimicking the vector's gut environment. Laboratory diagnosis often relies on isolating and cultivating amastigotes from tissue samples, which then transform into diagnostic promastigotes for identification and characterization. Their characteristic morphology aids microscopic confirmation.
A: Amastigote Amastigotes are the non-flagellated, intracellular stage found in vivo within mammalian host macrophages. While present in patient samples, they transform into promastigotes when cultured in vitro.
C: Trypomastigote Trypomastigotes are the diagnostic and infective stages of Trypanosoma species, not Leishmania. Leishmania parasites do not typically exhibit a trypomastigote stage in their life cycle.
D: Schizont Schizonts are an asexual reproductive stage primarily associated with Plasmodium species (malaria) within red blood cells or liver cells. Leishmania parasites do not form schizonts in their life cycle.
After receiving change-of-shift report about all of these clients, which one will you assess first?
Rationale:
A 69-year-old with chemotherapy-induced neutropenia who has an elevated oral temperature will be assessed first.
This client presents with febrile neutropenia, a life-threatening medical emergency. Chemotherapy-induced neutropenia drastically impairs the immune system, making any infection, even with a low-grade fever, potentially fatal due to rapid progression to sepsis. Immediate assessment, blood cultures, and prompt initiation of broad-spectrum
A 12-year-old patient with localized osteosarcoma is being treated with cisplatin, doxorubicin, and high-dose methotrexate. The pain at his primary site rapidly resolves after initiation of chemotherapy. After tumor resection, pathology reveals the tumor was greater than 95% necrotic. You want to continue cisplatin, doxorubicin, and high-dose methotrexate. Which of the following is the best answer regarding the evaluations that should be performed to monitor for toxicity in patients receiving cisplatin, doxorubicin, and high-dose methotrexate?
Rationale:
Complete blood count, creatinine, serum magnesium, audiogram, and echocardiogram should be performed to monitor for toxicity in patients receiving cisplatin, doxorubicin, and high-dose methotrexate.
A patient is presented with weakness of legs, arms, trunk, tingling and numbness that progressively worsens. Peripheral blood smear shows macrocytic anemia. Which of the following is not the factor causing this condition?
Rationale:
Tapeworm infestation is not the factor causing this condition.
Chronic atrophic gastritis, ileal resection, and alcoholism are all established causes of vitamin B12 deficiency, which manifests with macroc
A nurse is preparing to administer a prescribed dose of desmopressin to a client who has hemophilia A. The client's laboratory results indicate that the client has a sodium level of 130 mEq/L. Which of the following actions should the nurse take?
Rationale:
Clarify the prescription with the provider.
Desmopressin can cause fluid retention and hyponatremia due to its antidiuretic effect. A sodium level of 130 mEq/L is already below the normal range, indicating existing hyponatremia. Administering desmopressin could worsen this condition, leading to severe neurological complications. The nurse must communicate this critical lab finding to the provider to re-evaluate the medication's safety and necessity, preventing adverse events.
B: Administer the drug with an analgesic. An analgesic does not address the client's low sodium level or mitigate the risk of desmopressin-induced hyponatremia. Pain management is unrelated to this specific medication safety concern.
C: Administer the required dose orally. The route of administration, whether oral or intravenous, does not
You discover that a college-aged patient experiences intermittent nose bleeds lasting 15 to 20 minutes and has heavy menstrual bleeding every month. What condition might these symptoms suggest?
Rationale:
Von Willebrand disease is suggested by the patient's intermittent nose bleeds lasting 15 to 20 minutes and heavy menstrual bleeding every month.
Von Willebrand disease (VWD) is a common inherited bleeding disorder caused by a deficiency or dysfunction of von Willebrand factor (VWF). VWF is crucial for platelet adhesion and also carries factor VIII, impacting coagulation. Symptoms like prolonged epistaxis and menorrhagia are classic manifestations, indicating impaired primary hemostasis. These specific bleeding patterns strongly point towards VWD as the underlying cause.
B: Polycythemia vera This myeloproliferative disorder involves excessive red blood cell production, often leading to thrombotic events, not typically prolonged bleeding from mucosal surfaces. Its primary presentation differs significantly from the patient's symptoms.
Which of the following is a vitamin K-dependent coagulation factor?.
Rationale:
Stuart Prower factor is a vitamin K-dependent coagulation factor.
Stuart Prower factor, also known as Factor X, is a crucial component in both the intrinsic and extrinsic pathways of coagulation. Its synthesis in the liver requires vitamin K as a co-factor for the gamma-carboxylation of specific glutamic acid residues. This modification enables Factor X to bind calcium and phospholipids, which is essential for its activation and subsequent role in converting prothrombin to thrombin, thus propagating the clotting cascade effectively.
A: Thromboplastin Thromboplastin, or tissue factor, initiates the extrinsic pathway but is not a vitamin K-dependent protein; it's a lipoprotein complex released from damaged tissues.
C: Hageman factor Hageman factor, or Factor XII, initiates the intrinsic pathway and is activated by contact with negatively charged surfaces, not by vitamin K.
D: Proaccelerin Proaccelerin, or Factor V, is a cofactor that accelerates thrombin formation but lacks the gamma-carboxyglutamic acid residues that necessitate vitamin K for its synthesis.
A 72-year-old male with enlargement of superficial lymph nodes and mild hepatosplenomegaly is diagnosed as having chronic lymphatic leukemia (CLL). The most important criteria for diagnosis of this disease is the
Rationale:
The most important criteria for diagnosis of chronic lymphatic leukemia (CLL) is the absolute lymphocytes.
Chronic lymphocytic leukemia diagnosis fundamentally relies on sustained peripheral blood lymphocytosis, specifically an absolute lymphocyte count exceeding 5 x 10^9/L for at least three months, along with characteristic immunophenotypic markers. While other findings support the diagnosis, this persistent elevation of monoclonal B-lymphocytes in circulation remains the primary hematological hallmark differentiating CLL from other lymphoproliferative disorders and reactive conditions.
A: Presence of hypogammaglobulinemia Hypogammaglobulinemia is a common complication and prognostic factor in CLL, predisposing patients to infections, but it is not a primary diagnostic criterion for initial disease identification.
C: Male predominance While CLL exhibits a slight male predominance, gender is an epidemiological observation, not a clinical criterion used for definitively establishing a patient's diagnosis of the disease.
D: Presence of enlarged lymph nodes Enlarged lymph nodes are common clinical manifestations of CLL, indicating disease progression and burden, but their presence alone is insufficient for a definitive diagnosis without laboratory confirmation.
You receive a phone call from a community pediatrician who is caring for a 2-year-old toddler with a cancer predisposition syndrome. The pediatrician describes a child at the 95th percentile for height and weight with a history of corrective oral surgery to reduce a large tongue and a history of an omphalocele in infancy. The pediatrician is currently performing ultrasound of the abdomen and laboratory evaluation for this patient every 3 months. Which tumor is this patient most at risk of developing?
Rationale:
Nephroblastoma is the tumor this patient is most at risk of developing.
The patient's features—overgrowth (95th percentile height/weight), macroglossia (
You are seeing a 13-year-old boy with fatigue, weight loss, night sweats, and splenomegaly. Peripheral blood shows anemia, thrombocytosis, and leukocytosis (300,000/mm3). What is this patient's most likely diagnosis?
Rationale:
Chronic myeloid leukemia (CML) is this patient's most likely diagnosis.
CML in a 13-year-old boy is strongly indicated by the constellation of significant leukocytosis (3
Your patient with relapsed high-risk neuroblastoma returns to your care after travelling to an outside institution for [131]I-MIBG therapy. In the weeks following [131]I-MIBG therapy, what adverse events directly attributable to this therapy will the patient most likely encounter?
Rationale:
Myelosuppression requiring growth factor and blood product support is the adverse event most likely encountered in the weeks following [131]I-MIBG therapy.
[131]I
You are caring for a patient with a large localized Ewing sarcoma of the soft tissues of the arm. The surgeon believes that the tumor can be resected without amputation but asks whether you can give some chemotherapy to shrink the tumor before surgery. Which of the following would you tell the surgeon?
Rationale:
You agree with waiting to do the resection until week 12 of therapy and will begin chemotherapy; you recognize that radiotherapy will not be necessary if the tumor is completely resected at week 12 of therapy.
Agreeing to neoadjuvant chemotherapy before week 12 resection
The nurse is documenting findings after completing data collection with a patient. What term should the nurse use to document a large area of discoloration from hemorrhage under the skin?
Rationale:
Ecchymosis is the term a nurse should use to document a large area of discoloration from hemorrhage under the skin.
Ecchymosis precisely describes a large, irregularly formed area of purplish-blue discoloration caused by blood extravasation into the subcutaneous tissue following trauma or capillary leakage. This extravasated blood breaks down, causing the characteristic color changes of a bruise. The term accurately conveys the extensive, non-blanchable hemorrhagic skin finding mentioned in the scenario.
A: Pallor Pallor denotes an unnatural paleness of the skin, often observed with anemia or vasoconstriction, which is the opposite of a discolored hemorrhagic area.
B: Rubor Rubor refers to a distinct redness of the skin, typically indicative of inflammation or increased blood flow, not a large subdermal hemorrhage.
C: Petechiae Petechiae are tiny, pinpoint, non-blanchable red-purple spots on the skin, significantly smaller than the large area of discoloration described.
A nurse is caring for a client who is taking clopidogrel to prevent stent restenosis. The nurse should monitor the client for which of the following adverse reactions?
Rationale:
The nurse should monitor the client for thrombocytopenia.
Clopidogrel is an antiplatelet medication that inhibits platelet aggregation. A serious adverse reaction associated with clopidogrel use is thrombocytopenia, a significant decrease in platelet count. This can manifest as increased bleeding risk, bruising, or petechiae. Monitoring platelet levels is crucial to detect this hematologic complication early and prevent severe hemorrhagic events in clients receiving this medication.
A: Hyperuricemia Clopidogrel does not typically cause elevated uric acid levels. This condition is more commonly linked to gout or certain diuretic medications, not antiplatelet therapy.
B: Hyponatremia Clopidogrel does not directly cause low serum sodium levels. Hyponatremia is often associated with fluid imbalances, kidney dysfunction, or specific diuretic use, unrelated to this antiplatelet agent.
C: Lymphocytopenia While some medications can affect white blood cells, clopidogrel is not primarily known to induce a decrease in lymphocyte count. This particular hematologic impact is not a recognized common adverse effect.
