Related Experiment Video
Updated: Aug 10, 2026

Chronic Thromboembolic Pulmonary Hypertension and Assessment of Right Ventricular Function in the Piglet
Published on: November 4, 2015
Complications of modified Blalock-Taussig shunts mimicking pulmonary disease
1Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, UK.
Insights
The modified Blalock-Taussig shunt can lead to rare complications. These shunt issues were initially misdiagnosed as pneumonia or tuberculosis in two pediatric patients with cyanotic heart disease.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Disease
- Surgical Palliation
Background:
- The modified Blalock-Taussig shunt is a critical surgical procedure for managing cyanotic congenital heart disease.
- Early diagnosis and management of shunt-related complications are essential for patient outcomes.
Observation:
- Two pediatric cases presented with unusual complications following modified Blalock-Taussig shunt surgery.
- Initial diagnoses included lobar pneumonia and tuberculosis, highlighting potential diagnostic challenges.
Findings:
- One case involved a false aneurysm secondary to graft infection.
- The second case demonstrated dilatation of the left pulmonary artery due to shunt blood flow.
Implications:
- These cases underscore the importance of considering shunt complications in the differential diagnosis of respiratory symptoms in patients with congenital heart disease.
- Awareness of these unusual presentations can prevent delayed diagnosis and improve patient management.
Abstract:
The modified Blalock-Taussig shunt is commonly performed as early palliation in cyanotic congenital heart disease. To highlight unusual diagnostic problems in such patients, two cases are reported in whom shunt complications were initially diagnosed as lobar pneumonia and tuberculosis, respectively. The children, an 8 month old boy and a 3 year old boy, had false aneurysm secondary to infection of the graft and dilatation of the left pulmonary artery caused by blood flow through the shunt, respectively.
More Related Videos
09:23Shunt Surgery, Right Heart Catheterization, and Vascular Morphometry in a Rat Model for Flow-induced Pulmonary Arterial Hypertension
Published on: February 11, 2017
06:47A Pulmonary Trunk Banding Model of Pressure Overload Induced Right Ventricular Hypertrophy and Failure
Published on: November 29, 2018
Related Concept Videos
Mitral Stenosis I: Introduction
Mitral Stenosis II: Clinical features and Diagnostic Tests
Pulmonary Embolism I: Introduction
Pneumothorax II: Pathophysiology
Atelectasis II: Pathophysiology
Pulmonary Embolism I: Introduction