# Following the insertion of an inferior vena cava (IVC) filter, which assessment finding should prompt the nurse to immediately notify the healthcare provider?

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## 문제

Following the insertion of an inferior vena cava (IVC) filter, which assessment finding should prompt the nurse to immediately notify the healthcare provider?

## 보기

1. Mild tenderness at the insertion site with no visible swelling
2. Sudden onset of severe back pain with hypotension **✔ 정답**
3. Small amount of serosanguineous drainage from the insertion site
4. Patient reports feeling anxious about the procedure

**정답: 2**

## 해설

Sudden severe back pain with hypotension suggests retroperitoneal bleeding, a life-threatening complication requiring immediate intervention. Mild tenderness, small drainage, or anxiety are expected post-procedure findings.

## 심화 해설

Understanding the Complication

Following the insertion of an inferior vena cava (IVC) filter, the most critical nursing responsibility is monitoring for life-threatening complications. While mild insertion site discomfort or a small amount of drainage can be expected, a sudden onset of severe back pain accompanied by hypotension is a classic presentation of a vascular catastrophe. This combination of symptoms strongly suggests retroperitoneal hemorrhage or obstructive shock secondary to acute inferior vena cava thrombosis (IVCT), both of which are documented, life-threatening complications of IVC filter placement [1,2].

Analysis of the Correct Answer (Option 2)

The sudden onset of severe back pain with hypotension is a red flag for hemorrhagic shock or obstructive shock. The provided literature describes a case where a patient developed acute nausea and abdominal distension on postoperative day 9, which rapidly progressed to hemorrhagic shock and death due to IVC perforation and a retroperitoneal hematoma [2]. Similarly, acute caval thrombosis can lead to obstructive shock by blocking venous return, manifesting as hypotension and severe pain [1]. This finding requires immediate notification of the healthcare provider because it signals a rapid clinical decline that may necessitate emergency intervention, such as large-bore mechanical thrombectomy or surgical repair [3].

Analysis of the Incorrect Answers

- Option 1: Mild tenderness at the insertion site without visible swelling is an expected finding after an invasive procedure. It does not indicate a systemic or life-threatening complication like caval perforation or thrombosis.

- Option 3: A small amount of serosanguineous drainage is a normal finding at a puncture site and represents serous fluid mixed with a small amount of blood. This is not an emergency, unlike the sudden onset of severe pain with hemodynamic instability.

- Option 4: While anxiety should be addressed through therapeutic communication and emotional support, it is not the immediate physiological priority. The nurse must first rule out acute physical complications. A patient’s report of anxiety does not carry the same urgency as objective signs of shock.

Pathophysiology and Clinical Implications

The IVC filter is a mechanical barrier designed to trap emboli, but its presence can trigger thrombus formation on the device itself, leading to IVC thrombosis. If the thrombosis is extensive, it can obstruct venous return to the heart, causing obstructive shock characterized by hypotension, tachycardia, and severe pain [1,3]. Furthermore, the struts of the filter can migrate and perforate the vena cava wall, leading to a retroperitoneal hematoma. As the hematoma expands, the patient loses blood volume into the retroperitoneal space, leading to hemorrhagic shock with a drop in blood pressure and severe back or flank pain [2]. A systematic review also highlights that filter migration, including intracardiopulmonary migration, is a potentially fatal event that can present with acute hemodynamic instability . The nurse’s assessment must focus on distinguishing these emergent vascular events from benign post-procedural symptoms.References (research sources)

- [1]Acute caval thrombosis leading to obstructive shock in the early post insertion period of an inferior vena cava filter: a case report and literature review.Case reportGao S, Chen Y, Huang Y, Dang Y, Li Y. (2024) · DOI: 10.1186/s12959-023-00567-3

- [2]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

- [3]Concurrent inferior vena cava syndrome and spontaneous retroperitoneal hemorrhage secondary to inferior vena cava filter thrombosis, treated with large bore mechanical thrombectomy: a case report.Case reportKhan BZ, Wigham A, Kearns D. (2026) · DOI: 10.1093/bjrcr/uaag024

## 임상 시나리오

IVC Filter Post-Procedure MonitoringRecognizing Life-Threatening Complications
The priority after IVC filter placement is monitoring for retroperitoneal hemorrhage or acute caval thrombosis. A sudden onset of severe back pain with hypotension is a classic presentation of these vascular catastrophes and requires immediate notification of the provider.

Expected findings include mild insertion site tenderness or a small amount of serosanguineous drainage. These do not require urgent intervention, but the site should be monitored for expanding hematoma or active bleeding.

CautionDo not delay reporting if the patient develops signs of hemorrhagic shock (tachycardia, hypotension, pallor) or obstructive shock (distended neck veins, hypotension) with back or abdominal pain. Emergency intervention, such as mechanical thrombectomy or surgical repair, may be required.

## 핵심 개념

- **Retroperitoneal hemorrhage** — Bleeding into the retroperitoneal space, a potential complication of IVC filter placement causing severe back pain and hypovolemic shock.
- **Inferior vena cava thrombosis** — Acute clot formation in the IVC, which can obstruct venous return and lead to obstructive shock, presenting with hypotension and pain.
- **Obstructive shock** — A state of inadequate tissue perfusion caused by a physical obstruction to blood flow, such as a massive thrombus blocking the vena cava.

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