# Laboratory tests showed _____, an abnormal decrease in white blood cell count increasing susceptibility to infections.

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=168468  
> language: ko  
> subject: Diseases of the blood and blood-forming organs

## 문제

Laboratory tests showed _____, an abnormal decrease in white blood cell count increasing susceptibility to infections.

## 보기

1. leukopenia **✔ 정답**
2. anemia
3. thrombocytopenia
4. polycythemia
5. neutrophilia

**정답: 1**

## 해설

Leukopenia is a reduction in the number of white blood cells (leukocytes) in the blood. This condition makes individuals more susceptible to infections as white blood cells are crucial for fighting pathogens. Common causes include chemotherapy, radiation therapy, bone marrow disorders, and certain medications. Regular monitoring and infection prevention are essential in managing this condition.

## 임상 시나리오

Leukopenia:
- Definition: Decrease in total WBC count below 4,000/μL
- Types of WBCs affected: neutrophils, lymphocytes, monocytes, eosinophils, basophils
- Common causes:
* Viral infections (HIV, influenza)
* Medications (chemotherapy, antibiotics)
* Autoimmune disorders
* Bone marrow disorders
* Radiation exposure

Clinical manifestations:
- Increased susceptibility to infections
- Fever
- Fatigue
- Weakness

Diagnostic tests:
- Complete Blood Count (CBC)
- Peripheral blood smear
- Bone marrow biopsy

Treatment approaches:
- Treat underlying cause
- Colony-stimulating factors
- Antibiotics for infections
- Isolation precautions
- Regular monitoring

Prevention strategies:
- Avoid exposure to infections
- Good hygiene practices
- Regular health screenings
- Proper nutrition
- Medication adjustment if drug-induced

## 핵심 개념

- **leukopenia** — A condition characterized by an abnormally low number of white blood cells (leukocytes) in the blood, increasing vulnerability to infections
- **anemia** — A condition characterized by a decrease in the number of red blood cells or hemoglobin concentration, leading to reduced oxygen delivery to tissues
- **thrombocytopenia** — A condition characterized by abnormally low levels of platelets (thrombocytes) in the blood, which can lead to impaired blood clotting
- **polycythemia** — A condition characterized by an abnormally high concentration of red blood cells in the blood, leading to increased blood viscosity
- **neutrophilia** — A condition characterized by an abnormally high number of neutrophils (a type of white blood cell) in the blood, often indicating infection or inflammation

## 같은 주제 문제

- [CBC shows severe ______ with hemoglobin of 6.2 g/dL, requiring immediate transfusion.](https://mymerci.kr/pages/nclex_q.php?qn_id=168335)
- [Patient shows signs of acute ______ syndrome with severe bone pain.](https://mymerci.kr/pages/nclex_q.php?qn_id=168354)
- [Laboratory tests showed severe _____, an abnormally low red blood cell count or hemoglobin…](https://mymerci.kr/pages/nclex_q.php?qn_id=168439)
- [The trauma patient showed signs of _____, a condition where blood clots start forming thro…](https://mymerci.kr/pages/nclex_q.php?qn_id=168453)
- [Blood tests revealed _____, an allergic condition characterized by elevated levels of spec…](https://mymerci.kr/pages/nclex_q.php?qn_id=168465)

---

More free questions: [기출문제](https://mymerci.kr/)

_학습 참고용입니다. 실제 임상은 최신 지침과 소속 기관 프로토콜을 따르세요._