This document contains lecture notes from a presentation on reading and interpreting chest x-rays. It discusses various findings that can be observed on a chest x-ray and their potential medical significance, including cardiomegaly, mediastinal widening, the shape of heart borders, lung opacity and plethora, and situs of organs. It also notes some limitations and fallacies of using metrics like cardiothoracic ratio and provides examples of clinical cases to spot diagnoses from chest x-rays.
28. Clinically ASD but CTR > 65%
If in a clinical case CTR is > than expected,
Think of additional pathologies which increase L to R shunt
ASD with an additional L SVC ?
61. Fallacy of CTR in a PO CXR
• Preop CTR > 70% rarely decrease
• Upto 6 months to regress
• AF : an additional cause of high CTR
• Preop CXR : a MUST for comparison
• CTR is a Prognostic Indicator