Tetanus is a medical condition caused by a toxin produced by Clostridium tetani bacteria. It causes prolonged contraction of skeletal muscle fibers. Common causes of infection include contaminated wounds, burns, and puncture wounds. The toxin acts at the spinal cord to cause muscle contractions from minor stimuli. Symptoms include lockjaw, neck stiffness, and painful muscle spasms. Treatment involves antibiotics, tetanus immunoglobulin, muscle relaxants, and maintaining respiration and nutrition during recovery.
The information about Tetanus is a basic content intended to share Students of Graduate and postgraduate in Life Sciences.
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The information about Tetanus is a basic content intended to share Students of Graduate and postgraduate in Life Sciences.
The up loader has no Commercial interests
Tetanus, Lock Jaw, Opisthotonus, Tetanus Immunoglobulins, Immunization, Cephalic Tetanus. A much feared topic among residents explained in a simple way.
Tetanus is a serious illness caused by Clostridium bacteria. The bacteria live in soil, saliva, dust, and manure. The bacteria can enter the body through a deep cut, like those you might get from stepping on a nail, or through a burn. It can lead to "locking" of the jaw. This makes it impossible to open your mouth or swallow.
Tetanus |Causes | Signs and symptoms| All aspects - medical discussion martinshaji
this is a brief study regarding almost all aspects of tetanus .Tetanus is a condition caused by a nerve toxin produced by the bacteria Clostridium tetani, which may also cause fatal condition too.
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Tetanus, Lock Jaw, Opisthotonus, Tetanus Immunoglobulins, Immunization, Cephalic Tetanus. A much feared topic among residents explained in a simple way.
Tetanus is a serious illness caused by Clostridium bacteria. The bacteria live in soil, saliva, dust, and manure. The bacteria can enter the body through a deep cut, like those you might get from stepping on a nail, or through a burn. It can lead to "locking" of the jaw. This makes it impossible to open your mouth or swallow.
Tetanus |Causes | Signs and symptoms| All aspects - medical discussion martinshaji
this is a brief study regarding almost all aspects of tetanus .Tetanus is a condition caused by a nerve toxin produced by the bacteria Clostridium tetani, which may also cause fatal condition too.
please comment
thank you
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2. Tetanus ( "to stretch") is a medical condition
characterized by a prolonged contraction
of skeletal muscle fibers due to an EXOTOXIN
produced by C.Tetani
3. Contaminated wounds
Deep wounds
Devitalized (dead) tissue
Puncture wounds, such as those caused by
nails, splinters, or insect bites
BURNS pt
Any break in the skin
Injection-drug sites.
Newborn child (by means of the uterus after
delivery and through the umbilical cord
stump).
4. Up to several months, but is usually about 14
days.
In general, the further the injury site is from
the central nervous system, the longer the
incubation period.
The shorter the incubation period, the more
severe the symptoms.
In neonatal tetanus, symptoms usually appear
from 4 to 14 days after birth, averaging about
7 days.
5. This is the most common type of tetanus,80% of cases.
Descending pattern.
The first sign is trismus, or lockjaw,
Facial spasms called risus sardonicus,
Followed by stiffness of the neck,
Difficulty in swallowing, and
Rigidity of pectoral and calf muscles.
Spasms may occur frequently and last for several minutes
with the body shaped into a characteristic form
called opisthotonos.
Spasms continue for up to four weeks, and complete
recovery may take months.
Sympathetic overactivity (soa) is common in severe tetanus
and
Death can occur within four days.
6. This is a form of generalized tetanus that occurs
in newborns.
Infants who have not acquired passive
immunity because the mother has never been
immunized are at risk.
It usually occurs through infection of the
unhealed umbilical stump, particularly when the
stump is cut with a non-sterile instrument.
Neonatal tetanus is common in many developing
countries and is responsible for about 14%
(215,000) of all neonatal deaths, but is very rare
in developed countries.
7. This is an uncommon form of the disease, in
which patients have persistent contraction of
muscles in the same anatomic area as the
injury.
The contractions may persist for many weeks
before gradually subsiding.
Local tetanus is generally milder; only about
1% of cases are fatal, but it may precede the
onset of generalized tetanus.
8. This is a rare form of the disease,
occasionally occurring with otitis media (ear
infections) in which C. tetani is present in the
flora of the middle ear, or following injuries
to the head.
There is involvement of the cranial nerves,
especially in the facial area.
9. Tetanospasmin/Potent neurotoxin
Also called spasmogenic toxin, or TeNT.
The LD50 of this toxin has been measured to
be approximately 1 ng/kg, making it second
only to Botulinum toxin D as the deadliest
toxin in the world
Tetanus toxin causes violent spastic paralysis by
blocking the release of γ-aminobutyric acid.
γ-aminobutyric acid is a neurotransmitter that inhibits
motor neurons.[
11. Act by inhibiting release of cholinesterase
Act at spinal level & cause contraction due to
minor stimuli
Toxin fixed to nervous tissue cannot be
neutralised
12. Spatula test :involves touching
the posterior pharyngeal wall with a sterile,
soft-tipped instrument and observing the
effect.
A positive test result is the involuntary
contraction of the jaw (biting down on the
"spatula")
Negative test result would normally be a gag
reflex attempting to expel the foreign object
13. Mild tetanus[edit]
Mild cases of tetanus can be treated with:[17]
tetanus immunoglobulin IV or IM
metronidazole IV for 10 days
diazepam
Severe tetanus[edit]
Severe cases will require admission to intensive care. In addition to the measures listed above for mild
tetanus:[17]
Human tetanus immunoglobulin injected intrathecally (increases clinical improvement from 4% to 35%)
Tracheotomy and mechanical ventilation for 3 to 4 weeks. Tracheostomy is recommended for securing the
airway, because the presence of an endotracheal tube is a stimulus for spasm
Magnesium, as an intravenous (IV) infusion, to prevent muscle spasm
Diazepam as a continuous IV infusion
The autonomic effects of tetanus can be difficult to manage (alternating hyper-
and hypotension hyperpyrexia/hypothermia) and may require IV labetalol, magnesium, clonidine, or nifedipine
Drugs such as diazepam or other muscle relaxants can be given to control the muscle spasms. In extreme cases
it may be necessary to paralyze the patient with curare-like drugs and use a mechanical ventilator.
In order to survive a tetanus infection, the maintenance of an airway and proper nutrition are required. An intake
of 3,500 to 4,000 calories, and at least 150 g of protein per day, is often given in liquid form through a tube
directly into the stomach (percutaneous endoscopic gastrostomy), or through a drip into a vein (parenteral
nutrition). This high-caloric diet maintenance is required because of the increased metabolic strain brought on
by the increased muscle activity. Full recovery takes 4 to 6 weeks because the body must regenerate destroyed
nerve axon terminal