Post-mortem staining: (AIIMS Nov 2013)
|A||Can be mistaken for contusion|
|B||Can occur before death in cholera|
|C||Is same as Cadaveric spasm|
|D||Is blue-pink colour in H2S poisoning|
Can occur before death in cholera
a. Post-mortem staining can occur in some cases before death in cholera, TB, CCF, morphine poisoning, asphyxia.
b. It is less marked in death from lobar pneumonia and other conditions where blood coagulates quickly.
c. Normal colour of P.M. staining is Bluish / purplish-red.
d. Colour of P.M. staining in various poisoning-
i. Dark brown or yellow- Phosphorus or acute copper poisoning
ii. Cherry red- CO & Cold storage
iii. Bluish-green- H2S
iv. Bright red- HCN/ Cyanides
v. Chocolate/Red-brown coloured- Nitrites/Nitrates, aniline, Nitrobenzene, Acetanilide, Bromates, Chlorates (due to formation of Methaemoglobin.)