Autopsy aka necropsy is the postmortem examination of the body after death. It is one of the most crucial topics of FMT and must be prepared thoroughly for the NEET PG exam.
To aid your NEET PG/
NExT exam preparation of FMT, we have covered the topic in a very crisp and concise manner in this blog. Read it till the end and bookmark for future reference.
Necropsy, PME (Post Mortem Examination)
Clinical / Pathological Autopsy
M/C type of autopsy in India
Done in unnatural deaths - Suicide, Homicide
Consent from Investigation officer (IO), Police/ Magistrate
Body to be handed over to IO
Done in Natural deaths
Relative give consent (cannot be done without consent)
Body to be handover to Relatives
Negative autopsy: Doctor will not be able to state the cause of death. It may be due to incorrect technique, lack of experience, incorrect preservation etc.
Virtual Autopsy / Virtoupsy (No Dissection): Complete body scanning to find the structural lesion/ cause of death.
Psychological Autopsy (No Dissection)
Done in suicidal deaths Done to know about the psychological state of person before committing suicide.
Conduct interviews with parents/ friends.
Different Types of skin Incisions
Following are the different types of skin incisions used for performing autopsy -
Starting from chin to pubic symphysis
Most commonly used.
Starting from shoulders on both sites reach Xiphisternum and it comes down to the pubic symphysis.
Modified “Y” Incision
Starts from mastoid comes down the lateral site of neck and then from suprasternal notch to Pubic Symphysis
Good for neck dissection Preferred in
Inverted “Y” incision
Starts from the chin in midline and comes down at the umbilicus it bifurcates and moves to the respective iliac crest.
Transverse incision starts from one acromion process to other and the vertical incision from suprasternal notch to pubic symphysis.
Put on back of body
Skin is reflected and look for deep contusion
Seen in custodial deaths
Different Techniques of Organ Removal in Autopsy
There are a number of general and specific autopsy techniques. Let’s learn important details on these different techniques below -
One by one removal of organs
M/C method used.
Letulle’s / En mass Method
En-Mass Removal or Evisceration
RAPID method Also used to study anatomical relation
Removal of attachment of tongue and from there we remove all the thoracoabdominal organs together as a single mass. Then we dissect the organs.
En–bloc Removal Targets only one particular area.
Ex: In Sexual offence - Only pelvic organs are removed. In Thoracic pathology/ Trauma - Only thoracic organs are removed.
Organ not removed outside the body to avoid spillage and exposure. Used for infectious diseases.
Example: HIV, Hepatitis patient,Covid pt.
Inflow outflow method: Start cutting from RA → RV → LA → LV
Can be done as Fresh ( commonly done) or Fixation with Formalin (best)
Double ligation method
Cut the stomach out by applying two ligatures at the ends and cut in the middle.
The area along lesser curvature has max damage due to poisoning. This is known as
Magenstrasse So, we
open our stomachs along greater curvature in poisoning cases.
Spinal cord dissection
Not routinely opened unless we suspect spinal injuries
2 approaches: anterior and posterior.
Posterior is easier and better.
Pyrogallol test , done to detect air embolism , Brown color indicates positive test
Which cavity to be opened first when starting an autopsy?
In poisoning cases Asphyxial cases to decompress vessels
Pneumothorax case to demonstrate presence of air in thorax
New born babies:
to check level of diaphragm Asphyxia deaths: Cranium → Thorax → Abdomen → Neck
This is to provide
Beneke’s method and Barr’s method.
Related Previous Year Question
Q. In autopsy, the doctor tied the bronchus and checked the floating and sinking of the lung. The test is identified as?
A. Getter’s test
B. Diatoms test
C. Hydrostatic test
D. Ploquet’s test
Answer: Hydrostatic test
Q. In the corrosive acid case, the stomach is opened along? A. Lesser curvature
B. Greater curvature
Answer: Greater curvature
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