# A 58-year-old client with a history of deep vein thrombosis had an inferior vena cava (IVC) filter placed 48 hours ago to prevent pulmonary embolism. Which assessment finding indicates a potential complication requiring immediate attention?

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> subject: Adult Health

## 문제

A 58-year-old client with a history of deep vein thrombosis had an inferior vena cava (IVC) filter placed 48 hours ago to prevent pulmonary embolism. Which assessment finding indicates a potential complication requiring immediate attention?

## 보기

1. Mild tenderness at the insertion site
2. Sudden onset of severe back pain with hypotension **✔ 정답**
3. Small amount of serous drainage from the insertion site
4. Client reports feeling anxious about the procedure

**정답: 2**

## 해설

Sudden onset of severe back pain with hypotension indicates potential IVC filter migration or perforation, which is a life-threatening complication requiring immediate intervention.

An inferior vena cava (IVC) filter is a medical device inserted into the inferior vena cava to prevent pulmonary embolism in patients with deep vein thrombosis. This procedure is performed on patients who cannot use anticoagulants or who experience recurrent embolism despite anticoagulation therapy.

The most important complications to monitor after IVC filter insertion are filter migration or vessel wall perforation. If the filter migrates or penetrates the vessel wall, severe back pain occurs due to retroperitoneal bleeding and irritation of surrounding structures. Hypotension results from internal bleeding and potential hemorrhagic shock.

The combination of sudden severe back pain and hypotension indicates a medical emergency requiring immediate intervention. Nurses must rapidly assess vital signs, immediately report to the physician, secure intravenous access for fluid resuscitation, and prepare for emergency surgery or interventional radiology procedures.

Since IVC filter complications can rapidly progress to life-threatening bleeding and hemodynamic instability, early recognition and prompt intervention are crucial. Nurses play a vital role in monitoring for these complications and initiating appropriate emergency responses to prevent patient deterioration.

## 심화 해설

Understanding the Complication

The client has an inferior vena cava (IVC) filter, a device placed to trap clots from the lower extremities and prevent them from reaching the lungs. A life-threatening complication is filter migration or perforation through the wall of the IVC. When this occurs, the structural integrity of the large vessel is compromised, leading to bleeding into the retroperitoneal space. The retroperitoneum can hold a large volume of blood, and as the hemorrhage progresses, the client will exhibit signs of hypovolemic shock. The provided forensic analysis confirms this sequence, documenting a case where IVC filter migration and perforation directly caused a retroperitoneal hematoma and subsequent hemorrhagic shock [1].

Analyzing the Correct Answer (Option 2)

Sudden onset of severe back pain with hypotension is the classic presentation of a retroperitoneal bleed. The severe back pain is caused by the rapid accumulation of blood in the retroperitoneal space, which stretches the peritoneum and compresses nerves. Hypotension is a late and critical sign of hypovolemic shock due to significant blood loss. This combination of symptoms indicates a vascular catastrophe that requires immediate surgical or interventional radiology intervention to control the hemorrhage and repair the perforation, a complication with a high mortality risk as demonstrated in the autopsy finding [1].

Why the Other Options Are Incorrect

- **Option 1:** Mild tenderness at the insertion site is an expected finding 48 hours post-procedure due to local tissue trauma and inflammation. While it requires monitoring, it does not signal a deep, life-threatening vascular injury.

- **Option 3:** A small amount of serous drainage from the insertion site is a normal part of the inflammatory healing phase. It would be a concern only if it became purulent, copious, or was accompanied by a expanding hematoma, which is not described here.

- **Option 4:** Feeling anxious about a recent invasive procedure is a common psychosocial response. While the nurse should provide emotional support and education, this finding does not take physiological priority over signs of acute hemorrhage and shock.

Clinical Reasoning and Priority Setting

Using the nursing process and Maslow's hierarchy, physiological integrity is the highest priority. The nurse must rapidly differentiate between an expected post-procedural finding and a sentinel event. The forensic report underscores that a client's deterioration from IVC perforation can be rapid, progressing from vague symptoms like nausea to fatal hemorrhagic shock [1]. Therefore, recognizing the pattern of sudden, severe pain coupled with signs of shock (hypotension, tachycardia) as a probable retroperitoneal bleed is the critical assessment skill. This finding demands immediate notification of the rapid response team and the provider, as it represents a direct threat to the client's survival.

References (research sources)

- [1]Autopsy findings of inferior vena cava filter perforation: a forensic analysis of retroperitoneal hemorrhage and medical liability.Research articleWang R, Zhou X, Su L, Qu G. (2026) · DOI: 10.1007/s12024-025-01080-x

## 임상 시나리오

Clinical Practice Guide: Suspected IVC Filter Complication

Assessment Findings

- Classic Presentation: Sudden onset of severe, unrelenting back or flank pain accompanied by hypotension and tachycardia.

- Mechanism: Filter strut perforation through the IVC wall causes retroperitoneal bleeding. The retroperitoneal space can sequester large volumes of blood before overt symptoms appear.

- Late Signs: Abdominal distension, Grey Turner sign (flank ecchymosis), and progression to frank hemorrhagic shock.

Immediate Nursing Actions

- Stop any anticoagulation if infusing and notify the provider immediately.

- Obtain large-bore IV access (minimum two sites) and initiate fluid resuscitation with crystalloids as prescribed.

- Prepare for emergency CT angiography to confirm perforation and localize bleeding.

- Anticipate activation of a massive transfusion protocol and emergent interventional radiology or vascular surgery consultation.

Differential for Post-Procedure Pain

- Expected: Mild, localized insertion site tenderness or groin discomfort.

- Concerning: Deep, severe back pain unrelieved by position change, especially with vital sign instability, is a vascular emergency until proven otherwise.

## 핵심 개념

- **IVC filter** — A device placed in the inferior vena cava to trap emboli from the lower extremities and prevent pulmonary embolism.
- **Retroperitoneal hemorrhage** — Bleeding into the retroperitoneal space, often presenting with severe back pain and signs of hypovolemic shock.
- **Hypovolemic shock** — A life-threatening condition caused by a significant loss of blood volume, leading to inadequate tissue perfusion and hypotension.

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