Quantcast Stages of Inflammation - Oral and Maxillofacial Pathology

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
1-3.
STAGES OF INFLAMMATION
Inflammation is a body defense mechanism that occurs regardless of the source
of injury. The inflammatory response is progressive, in stages; however, it should be
realized that various stages may exist within an injured area at the same time. The
major stages in the inflammatory process are vascular change, exudation, and repair.
The initial inflammatory response is vascular tissue injury resulting in the following
sequence of events.
a. Hyperemia. The presence of an abnormally large blood supply in which the
blood vessels are dilated and the flow of blood is slower.
b. Permeability. Increased permeability in the smaller blood vessels, allowing
the body to position blood elements in the area in order to heal the injured tissue or
combat any introduced foreign agents.
c. Exudation. The movement of fluid and blood cellular elements (exudates)
into the injured tissue(s).
d. Edema. Accumulation of fluids within the tissue(s) that then slows or
stagnates blood flow. This acts to localize the inflammatory process.
1-4.
MAJOR SIGNS AND SYMPTOMS OF INFLAMMATION
The four major signs and symptoms of inflammation are swelling, pain, heat, and
redness. Sometimes a fifth sign is disturbance of function. Swelling is the visual sign of
the accumulation of inflammatory substances (exudates) in the tissues and the
increased amount of blood in the area. The pressure of the exudates (and perhaps the
action of toxins, enzymes, and acids released from injured cells or liberated by
defensive cellular elements) on the nerve endings causes pain. The redness and heat
that accompany inflammation are because of the increased amount of blood in the area.
Inflammatory involvement of the tissue may result in disturbance of function.
1-5.
BENEFICIAL EFFECTS OF INFLAMMATION
The beneficial effects of inflammation are essentially fourfold. First, the
increased fluid dilutes the irritants present in the area (e.g., bacteria and their poisonous
products). Second, the blood cells engulf and often digest bacteria, dead cells, or other
debris that might cause or continue the inflammation. Third, antibodies, which are also
present in the edema fluid, neutralize toxic substances. Fourth, clotting of the edema
fluid walls off the area and prevents the irritant and the inflammation or the inflammatory
process from spreading beyond the affected site.
MD0511
1-3



Medical News
How are flight attendants affected by plane disasters?
A few nights after the recent plane crash in Ukraine,...
scopeblog.stanford.edu
Acetaminophen Fails in Back Pain Trial
(MedPage Today) -- The use of acetaminophen for acute low-back...
medpagetoday.com
Study Quantifies Cancer Risk of Morcellation (CME/CE)
(MedPage Today) -- One of every 368 women treated with...
medpagetoday.com
New York law offers nurses more recognition, responsibility
If past experience is anything to go by, nurse practitioners...
medicalxpress.com
Pain and itch may be signs of skin cancer
Asking patients if a suspicious skin lesion is painful or...
medicalxpress.com
Tox-Sparing HIV Regimen Falls Short
(MedPage Today) -- MELBOURNE, Australia -- Another HIV regimen intended...
medpagetoday.com
Poland suffers first cases of African swine fever in pigs
Poland on Wednesday confirmed its first cases of deadly swine...
medicalxpress.com
Greater odds of adverse childhood experiences in those with military service
Men and women who have served in the military have...
medicalxpress.com
Monitoring pulse after stroke may prevent a second stroke
New research suggests that regularly monitoring your pulse after a...
medicalxpress.com
A quiz on the social determinants of health
Given the topic of today’s SMS-Unplugged entry, during which Moises...
scopeblog.stanford.edu
Enhanced recovery program following colorectal surgery at community hospitals
An enhanced recovery program for patients after colorectal surgery appears...
medicalxpress.com
Study examines postoperative pneumonia prevention program in surgical ward
A postoperative pneumonia prevention program for patients in the surgical...
medicalxpress.com
FDA warns of compounded drug recall by Texas firm
(AP)—The Food and Drug Administration is warning doctors not to...
medicalxpress.com
Hormones after breast cancer: Not fuel for the fire after all?
A new study supports a growing body of research suggesting...
medicalxpress.com
More on the Navy pilot with mysterious symptoms – and the Stanford doctors who diagnosed him
Last week, we blogged about a Navy pilot whose mysterious...
scopeblog.stanford.edu
Monitoring, Dose Adjustment for Pradaxa? (CME/CE)
(MedPage Today) -- Blood level monitoring and dose adjustment for...
medpagetoday.com
'Kick' Study Excites AIDS Meeting
(MedPage Today) -- MELBOURNE, Australia -- A trial with only...
medpagetoday.com
Lymphoma Drug Gets Trio of FDA Approvals
WASHINGTON (MedPage Today) -- The FDA has approved the novel...
medpagetoday.com
Researchers find unsuspected characteristics of new CF drugs, offering potential paths to more effective therapies
In lab experiments using tissue samples cultured from cystic fibrosis...
medicalxpress.com
Video Games Help Teens Gain HIV Smarts
(MedPage Today) -- MELBOURNE, Australia -- If you want teenagers...
medpagetoday.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +