Time from Passing Out to Death with Carotid (and probably Jugular) Blockage

[dolemitedrums]

So this probably falls under the night night method as I understand it. But anyway, compression of the carotid arteries until unconsciousness and continued compression indefinitely (probably will block the jugulars as well).

No bag over the head, no hanging involved to compress or block other neck vessels.

Should take 10-20 seconds to go unconscious...but from that point how long until actual death where you can't be recovered or revived or continue as a vegetable. For example I have read that hanging also will block breathing and perhaps arteries that feed the brainstem which will be a quicker certain death.

But how long does the situation I described need to be applied for a certain result, for those with superior biological knowledge?

 

[mrtime87]

Bump to find later

 

[dolemitedrums]

Is there nothing to offer here? Ligature is one of the basic methods. Any quality information is welcome.

 

[motoko_s9]

J Forensic Sci, September 2008, Vol. 53, No. 5
doi: 10.1111/j.1556-4029.2008.00840.x

CASE REPORT
John D. Gilbert, 1 F.R.C.P.A.; Lisbeth Jensen, 2,3 M.D.; and Roger W. Byard, 1,2 M.B.B.S., M.D.
Further Observations on the Speed of Death in Hanging

"In reports by Sauvageau and Racette (1), and Yamasaki et al. (2)
the details of filmed suicidal hangings were presented. In the paper
by Sauvageau and Racette the reported victim lost consciousness at
13 sec, began convulsing at 15 sec, and had cessation of respiration
at 2 min. As no report on toxicological analyses was provided, it is
not possible to state whether or not there had been any contribution
to the lethal episode from prescription or illicit drugs (1). In the
second paper the asphyxial process was also rapid, lasting only
2 min 43 sec (2)."


References
1. Sauvageau A, Racette S. Agonal sequences in a filmed suicidal hanging:
analysis of respiratory and movement responses to asphyxia by hanging.
J Forensic Sci 2007;52:957–9.
2. Yamasaki S, Kobayashi AK, Nishi K. Evaluation of suicide by hanging.
Forensic Sci Med Pathol 2007;3:45–51.

 

[dolemitedrums]

J Forensic Sci, September 2008, Vol. 53, No. 5
doi: 10.1111/j.1556-4029.2008.00840.x

CASE REPORT
John D. Gilbert, 1 F.R.C.P.A.; Lisbeth Jensen, 2,3 M.D.; and Roger W. Byard, 1,2 M.B.B.S., M.D.
Further Observations on the Speed of Death in Hanging

"In reports by Sauvageau and Racette (1), and Yamasaki et al. (2)
the details of filmed suicidal hangings were presented. In the paper
by Sauvageau and Racette the reported victim lost consciousness at
13 sec, began convulsing at 15 sec, and had cessation of respiration
at 2 min. As no report on toxicological analyses was provided, it is
not possible to state whether or not there had been any contribution
to the lethal episode from prescription or illicit drugs (1). In the
second paper the asphyxial process was also rapid, lasting only
2 min 43 sec (2)."


References
1. Sauvageau A, Racette S. Agonal sequences in a filmed suicidal hanging:
analysis of respiratory and movement responses to asphyxia by hanging.
J Forensic Sci 2007;52:957–9.
2. Yamasaki S, Kobayashi AK, Nishi K. Evaluation of suicide by hanging.
Forensic Sci Med Pathol 2007;3:45–51.

Thanks, this is appreciated but these numbers are about hanging as opposed to the situation I described.

 

[alltoomuch2]

"Seventy percent of the blood going to the brain passes through the carotids, Dr. Saadi said. If that blood flow is cut off in a chokehold or a stranglehold, some people can become unconscious in three to four seconds. If the flow continues to be restricted, a person can die within three to four minutes." https://www.nytimes.com/2023/05/04/health/chokeholds-deaths-jordan-neely.html
Dr. Altaf Saadi, a neurologist at Massachusetts General Hospital
"Strangulation, one of the best predictors of homicide, is present in 10% of traumatic deaths (Strack & Gwinn, 2011). It is estimated only 11 pounds of pressure applied to both carotid arteries for ten seconds leads to unconsciousness. Brain death can result if this pressure is sustained for four to five minutes (McCance & Heuther, 2010; Strack & McClane, 1999)."

 

[motoko_s9]

So, a good few minutes in which

Thanks, this is appreciated but these numbers are about hanging as opposed to the situation I described.

The principle is the same. Since the author speaks of "cessation of respiration" after 2 and a bit minutes we can assume that the wind pipe was not obstructed.

 

[dolemitedrums]

So, a good few minutes in which

The principle is the same. Since the author speaks of "cessation of respiration" after 2 and a bit minutes we can assume that the wind pipe was not obstructed.

But I'm wondering if the vertebral artery or another key vessel is more likely to be compressed in hanging, hence my specific query. But the response is appreciated and may well be all I need. I'm just not sure.