Local complications of thrombophlebitis
Locally, acute thrombophlebitis manifests as a pronounced circulatory disorder distal to the site of vessel occlusion. The following morphological changes are characteristic:
- Pronounced, rapidly progressing tissue edema.
- Bluish discoloration (cyanosis) of the skin.
- Dilatation of the superficial venous network.
- Signs of local inflammation, including skin redness.
In the setting of wound sepsis, thrombophlebitis may be combined with lymphangitis and lymphadenitis. Epithelialization in the wound itself then stops, granulations become pale and watery, and the exudate becomes scanty and seropurulent (sometimes brownish-dirty with an unpleasant odor).
Systemic complications: PE and septic embolism
The most dangerous consequences of thrombophlebitis are systemic complications associated with the detachment and migration of a thrombus.
- Pulmonary embolism (PE): This is one of the most formidable complications. Most often, emboli enter the pulmonary artery from the deep veins of the lower extremities (lower leg, iliofemoral segment) and pelvic veins. Less commonly, the source is the hepatic veins, the inferior vena cava, or the right chambers of the heart.
- Septic embolism: When the inflammation is of an infectious nature, infected thrombus particles (septic emboli) can be carried via the bloodstream throughout the body, causing the formation of secondary abscesses—for example, liver or brain abscesses.
Risk groups and specific localizations
The probability of developing severe complications, especially PE, increases significantly in sedentary patients. High-risk groups include:
- Patients after surgical interventions.
- Patients with cardiovascular pathology (including a history of myocardial infarction).
- Patients with oncological diseases.
- Individuals on prolonged bed rest, as well as postpartum women.
In addition to lower extremity involvement, thrombophlebitis can develop in the cranial veins and sinuses (as a complication of otitis media, meningitis, or sinusitis) or in the portal vein system (pylephlebitis), which occurs against the background of abdominal and pelvic infections.
Consequences of a chronic course
When the inflammatory process transitions to a chronic stage, persistent chronic venous insufficiency develops. Due to prolonged blood outflow disturbance and impaired tissue nutrition, this condition logically leads to the formation of slow-healing trophic ulcers on the lower extremities. A recurrent course affecting different venous basins (migratory thrombophlebitis) is also possible.
Class and exam questions
What is pylephlebitis?
This is portal vein thrombophlebitis that develops as a complication of inflammatory and infectious processes in the abdominal cavity or pelvic organs.
Where do blood clots most often come from to enter the pulmonary artery in PE?
The main source is the deep veins of the lower extremities (iliofemoral veins, veins of the lower leg), as well as the pelvic veins and pelvic cellular tissue.
How does a wound change when thrombophlebitis develops against the background of wound sepsis?
Epithelialization stops, granulations become pale and watery and bleed easily. The discharge becomes scanty and seropurulent, the wound edges become indurated and acquire a pale bluish color.
What else to study on this topic
- Clinical and morphological manifestations of PE in large and small branches
- Causes of death in pulmonary embolism
- Differences between a postmortem blood clot and a thrombus (thromboembolus)
- Pathogenesis of septic abscess formation
Master the entire topic in the "General Surgery" course
This is a summary. The course covers everything tested in classes and exams.
- Complete study guide on "Complications of Thrombophlebitis" and 3,335 more pages of the subject
- Assignments and quizzes after every topic — just like in a colloquium
- AI tutor answers questions on the topic anytime
- 70 video lessons on the subject
Other topics in the "Additional Topics" section
Prepared by WhiteCoat Pro faculty in accordance with the medical school curriculum. For educational purposes only.