Suicide by firearm

A suicide method is any means by which a person completes suicide, purposely ending their life.

Suicide by exsanguination involves reducing the volume and pressure of the blood to below critical levels by inducing massive blood loss. It is usually the result of damage inflicted on arteries. The carotid, radial, ulnar or femoral arteries may be targeted. Death may occur directly as a result of the desanguination of the body or via hypovolemia, wherein the blood volume in the circulatory system becomes too low and results in the body shutting down.

Persons considering a suicide attempt, or trying out the weapon to ascertain its effectiveness, may first make shallow cuts, referred to as hesitation wounds or tentative wounds in the literature. They are often non-lethal, multiple parallel cuts.

Wrist cutting is sometimes practiced with the goal of self-harm and not suicide; however, if the bleeding is copious or allowed to continue unchecked, cardiac arrhythmia, followed by severe hypovolemia, shock, circulatory collapse or cardiac arrest, and death may ensue, in that order.

In the case of a failed suicide attempt, the person may experience injury of the tendons of the extrinsic flexor muscles, or the ulnar and median nerves which control the muscles of the hand, both of which can result in temporary or permanent reduction in the victim's sensory or motor ability or also cause chronic somatic or autonomic pain. As in any class IV hemorrhage, aggressive resuscitation is required to prevent death of the patient; standard emergency bleeding control applies for pre-hospital treatment.

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