<prompt> The following condition is not associated with an increased anion-gap type of metabolic acidosisShockIngestion of ante-freezeDiabetic ketoacidosisCOPD  <response>: Ref: Harrisons 18e p369, 17e p292 In COPD blood pH is usually maintained within normal range in spite of increased PaCO2 because of renal compensation which leads to retention of bicarbonates 