<prompt> Osborne waves in ECG is seen in?HypothyroidismHypothermiaHyponatremiaHypocalcemia  <response>: Osborn waves are usually observed in people suffering from hypohthermia with a temperature of less than 32 C 90 F, though they may also occur in people with high blood levels of calcium , brain injury, vasopastic angina or ventricular fibrillation . in Hyponatremia,Hypocalcemia,Hypothyroidism Osborn waves are not observed Ref Harrison 20th edition pg 1456 