The collection of the lymphatic fluid in the pleural space due to the leak in the thoracic duct is known as?

NVS Staff Nurse - 2019

Medical & Surgical Nursing

Easy

Appeared in: NVS Staff Nurse - 2019

Explanation

Chylothorax is the specific medical term for the accumulation of chyle, a type of lymphatic fluid, in the pleural space.
This condition results from a disruption or leak in the thoracic duct, the largest lymphatic vessel in the body.
The fluid is characteristically milky due to a high concentration of triglycerides absorbed from the digestive system.
Common causes include thoracic surgery, chest trauma, and mediastinal tumors.

Option A: Pleurodesis is a medical procedure, not a type of fluid collection. It involves instilling a chemical irritant into the pleural space to cause inflammation and adhesion of the two pleural layers, thereby obliterating the space.
Option C: While technically describing lymph in the thorax, 'Lymphothorax' is a non-standard and less precise term. The correct and universally accepted medical term is Chylothorax, as the fluid is specifically chyle.
Option D: Hemothorax is the collection of blood in the pleural space, not lymphatic fluid. It is diagnosed when the hematocrit of the pleural fluid is at least 50% of the peripheral blood hematocrit.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Types of Pleural Effusions as background academic context rather than a clinical decision trigger.
Nurses caring for patients with chylothorax must meticulously monitor chest tube drainage, noting the color (milky) and volume. Rapid or large-volume loss can lead to malnutrition, dehydration, and electrolyte imbalances.
Nutritional support is a cornerstone of management. The nurse will often administer a low-fat/medium-chain triglyceride (MCT) diet or manage total parenteral nutrition (TPN) to reduce chyle flow.
What if? If the pleural fluid was bloody instead of milky, the diagnosis would shift from chylothorax to hemothorax. The nursing priority would change to monitoring for signs of active bleeding and hemorrhagic shock, and preparing for potential blood transfusions or surgical intervention.

How to Approach the Question

First, break down the question stem to identify key terms: 'collection', 'lymphatic fluid', 'pleural space', and 'thoracic duct leak'.
Recognize that 'chyle' is the specific term for lymphatic fluid from the digestive tract that flows through the thoracic duct.
Evaluate each option based on medical terminology. 'Chylo-' refers to chyle, and '-thorax' refers to the chest.
Eliminate 'Hemothorax' as 'hemo-' means blood.
Eliminate 'Pleurodesis' by identifying it as a procedure, not a condition of fluid collection.
Choose 'Chylothorax' over the less specific and non-standard 'Lymphothorax' as it precisely describes the condition involving chyle from a thoracic duct leak.

Concept Tested & Keywords

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E6 Medicine Harrison 22e Part 2 p. 174-176

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