Which of the following ECG changes is least likely in a patient with left pneumothorax :: (A) Inversion of T wave, (B) Left axis detion, (C) Small Rwave, (D) Electrical alternans
Answer is B. Answer is B (Left axis detion) A left sided pneumothorax will shift the axis of the hea towards the right leading to a right axis detion rather than a left axis detion.