Immersion syndrome is also called as Hydrocution

Immersion syndrome is also called as ?
a) Hydrocution
b) Wet drowning
c) Dry drowning
d) Secondary drowning
Correct Answer - A
Ans. is ‘a’ i.e., Hydrocution
Immersion syndrome - is also called as hydrocution or submersion
inhibition or vagal inhibition.
Atypical drowning
It refers to drowning in which even after submersion of body in
water, little or no water anters respiratory passages and lungs.
Hence typical findings of wet drowning in the form of froth and
oedema aquosun: of lungs are not found. Atypical drowning may be

  1. Dry drowning : On contact with water, especially cold water, there
    results intense laryngospasm, so that water does not enter the
    lungs. Death is due to asphyxia because of laryngospasm.
  2. Immersion syndrome (hydrocution/submersion inhibition/vagal
    inhibition) : Sudden death occurs due to vagal inhibition as a result
    of (a) sudden impact with cold water, (b) duck diving (falling in water
    with feet first), and (c) horizontal entry in water with impact on
  3. Submersion of unconscious : If person is unconscious since before
    submersion in water, little or no water enters respiratory passages. It
    may occur in MI, cerebrovascular accident, hypertension, epilepsy,
    cerebral aneurysm and in drunk state.
  4. Near drowning (secondary drowning syndrome/post immersion
    syndrome) : In this drowning is survived and death occurs at a later
    stage after removal from water. Either the person himself comes out
    of water or he is recovered alive, but due to complications of
    submersion, he dies at a later stage. It is due to hypoxic
    encephalopathy and fibrosing alveolitis. The death occurs due to
    combined effect of cerebral hypoxia, pulmonary edema, aspiration
    pneumonitis, electrolyte disturbances and metabolic acidosis.