Dr. Vinod Kumar Singh, Senior Consultant, Critical Care, Sri Ganga Ram Hospital, New Delhi will talk on diagnosis of pulmonary embolism in this video. Pulmonary embolism is a dangerous condition which if left undiagnosed or untreated can lead to death. Dr. Singh will explain the clinical symptoms along with investigations. The most important symptom is shortness of breath along with certain risk factors such as obesity, hospitalized patient, etc. Patients should be investigated according to the presentation of the symptoms. The best investigation is the CT pulmonary angiography.