This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
Which of the following is not a cardiovas-cular monitoring technique: 
Select and explain. 
A. Transesophageal echocardio- graphy, B. Central venous pressure monitoring, C. Pulmonary aery catheterization, D. Capnography
D: Capnography
Answer: D: Capnography 
Explanation: D i.e. Capnography Capnography is a respiratory monitoring system (not cardiovascular). It is the determination of end tidal CO2 (Et CO2) concentration to confirm adequate ventilation. Cardiovascular monitoring techniques are - ECG, Echocardiography, BP, CVP, pulmonary aery catheterization.