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: Unknown
[{'content': 'Pseudo-P pulmonale seen in: \nSelect and explain. \nA. Hypokalemia, B. Hyperkalemia, C. Hypomagnesemia, D. Hypercalcemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref. API Textbook of Medicine. Pg. 708\n\xa0\nRight atrial abnormality (P pulmonale):\n\nECG Findings:\n\nRight atrial enlargement produces a peaked P wave (P pulmonale) with amplitude:\n> 2.5 mm in the inferior leads (II, III and aVF)\n> 1.5 mm in V1 and V2\n\n\nThe principal cause is pulmonary hypertension due to:\n\t\nChronic lung disease (cor pulmonale)\nTricuspid stenosis\nCongenital heart disease (pulmonary stenosis, Tetralogy of Fallot)\nPrimary pulmonary hypertension.\n\n\nA similar picture can be seen in hypokalaemia (known as “pseudo p-pulmonale”)', 'role': 'assistant'}]