<prompt> Pulse oxymetry detects inaccurately in presence of a Hyperbilirubinemiab Nail polishc Methemoglobinemiad Skin pigmentationabcbcdacbd  <response>: Inaccurate reading in pulse oximeter can be caused by carboxyhaemoglobinemia, methaemoglobinemia, anaemia, poor peripheral pulsation, hypovolemia vasoconstriction, vasodilatation, nail polish, shivering, skin pigmentation, and SpO2 below 60. 