RT Book, Section A1 Lichtman, Marshall A. A1 Kaushansky, Kenneth A1 Kipps, Thomas J. A1 Prchal, Josef T. A1 Levi, Marcel M. SR Print(0) ID 1126651561 T1 Methemoglobinemia and Other Dyshemoglobinemias T2 Williams Manual of Hematology, 8e YR 2011 FD 2011 PB McGraw-Hill Education PP New York, NY SN 9780071622424 LK hemonc.mhmedical.com/content.aspx?aid=1126651561 RD 2024/03/29 AB Cyanosis is most frequently caused by low arterial oxygen saturation because of cardiac or pulmonary disease, but rarely, it may be caused by increased concentrations of methemoglobin or sulfhemoglobin, or by abnormal hemoglobins with low oxygen affinity.