Type 1 Diabetes Pathophysiology
Friday, 29 September 2017
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Type 1 Diabetes Pathophysiology-Diabetes mellitus is a metabolic disorder, disease
caused by lack of the hormone insulin in a person's body. The lack of the
hormone insulin causes glucose consumed by the body could not be processed.
This situation causes sufferers to experience an excess
blood sugar or hyperglycemia. In diabetes the excess blood sugar can result in
long-term damage, dysfunction and failure of various organs, especially the
eyes, kidneys, nerves, heart, and blood vessels.
Type 1 Diabetes Pathophysiology |
Diabetes mellitus is a metabolic disease group with
characteristic hyperglycemia that occurs due to abnormalities of insulin
secretion, insulin work or both. Chronic hyperglycemia in diabetes is
associated with long-term damage, dysfunction or failure of some organs of the
body, especially the eyes, kidneys, nerves, heart and blood vessels.
Pathophysiology Of Diabetes Mellitus
Hyperglycemia occurs due to damage to pancreatic
β-cells that give rise to an increase in expenditure of glucose by the liver.
Expenditure of glucose by the liver is increased because the processes that
produce glucose, i.e. glikogenolisis and gluconeogenesis, took place without a
hitch because insulin does not exist.
When blood glucose levels increased up to the amount of
glucose difiltrasi in excess capacity, so that the cells of tubules do
reabsorbs, then glucose will arise in the urine (glukosuri). Glucose in urine
raises the osmotic effect which draws water osmoticdiuresis, poses with him
characterized by poliuria (frequent urination).
Excessive fluid out of the body causes dehydration, so
it can cause failure of the peripheral circulation due to the volume of blood
down prominently. The failure of the circulation, if not corrected, can lead to
death due to blood flow to the brain is down or it may cause secondary renal
failure due to the filtration pressure is not strong.
In addition, the cells lose water because the body is
dehydrated due to displacement of osmotic water from inside the cell to the
cell is hypertonic to the extra liquid. Brain cells are extremely sensitive to
disturbance arises because the function of the nervous system that is
polineuropati.
Other typical symptoms of diabetes mellitus are
excessive thirst is a mechanism of the compensation body to overcome dehydration
induced poliuria. Due to a deficiency ofglucose intra cell, then the
compensation body stimulates the nerves so that increases appetite and arising
excessive food intake (polifagia).
But despite an increase in food intake, body weight
decreased progressively due to the effects of insulin-deficiency on the
metabolism of fats and proteins. Triacylglycerol synthesis, decreased when
lipolysis is increased so the mobilization of fatty acids in the blood are
mostly used by cells as an alternative energy source.
Classification Of Diabetes mellitus
Type 1 Diabetes Pathophysiology
1. Diabetes mellitus type I
This type of diabetes can be caused by damage to
pancreatic β cells. In the past, DM type 1 also called diabetes onset (older
onset-teen) and diabetes-prone to ketosis (due to ketosis prone). DM type 1
onset usually occurs before the age of 25-30 years. The secretion of
insulin-deficient (the number is very low or none at all). Thus, without
treatment with insulin (insulin made via the granting of supervision along with
the adaptation diet).
2. Diabetes mellitus type II
This type of diabetes is also called diabetes
onset-Matura (adult-onset) diabetes and resistant-to ketosis. Diabetes Melitus type 2 is a
disease familiar which represents approximately 85% of cases the DM in the
developed world, with very high prevalence (35% of adults) in the community
that transforms into a modern traditional lifestyle.
DM type 2 had onset in middle age (40-50s), or older,
and less likely to evolve in the direction to ketosis. Most sufferers have more
weight. In type 2 Diabetes melitus this symptoms appear slowly and usually mild (sometimes,
haven't even shown symptoms over the years).
However, ketoacidosis is rarely emerged, except in the
case of accompanied by stress or infection. Decreased insulin levels, but not
to zero, or even higher, or perhaps insulin work ineffective.
3. Diabetes Mellitus Gestasional
Gestational diabetes mellitus was defined as any
glucose intolerance that arise or are detected in the first pregnancy,
regardless of the degree of intolerance and don't pay attention to whether
these symptoms disappear or settled after giving birth.
This type of diabetes usually appears on the second or
third trimester of pregnancy. This category includes the undiagnosed DM when
pregnant (previously unknown). Women who previously were known to have suffered
from the Diabetes mellitus, then pregnant, was not included in this category.
4. Malnutrition-related Diabetes Mellitus
This type of diabetes is proposed by the WHO because
the case lots found in the developing countries, especially in tropical
regions. This type of diabetes usually manifest symptoms at a young age,
between 10-40 years. Most patients experience abdominal pain which radiates
into the back (this pain starts with a pattern similar to the pattern starts
with pain due to pancreatitis).
The clinical manifestations are often encountered in
patients of Diabetes mellitus:
- Polyurea (increased spending of urine)
- Polydipsia (thirst peningkata)
- Polifagia (increased hunger)
- A sense of tiredness and muscle weakness due to impaired blood flow and the inability of the cells to change glucose into energy.
- Skin Disorders like itching – itching, sores.
- Tingling due to the occurrence of neuropathy.
- Body Weakness
- Cuts or sores that do not heal
- Blurry Eyes
Complications That May Be Experienced By Sufferers Of
Diabetes Mellitus
A. Acute Complications
Metabolic decompensation chaos due to deficiency of
insulin and insulin resistance.
2. Hypoglycemia
Decrease in the glucose levels in the blood. Insulin
levels usually caused a less precise or less carbohydrate intake.
3. The Hyperglycemia
Increased glucose levels in the blood.
B. Chronic Complications
1. Microvascular Complications is the occurrence of
blockage in the blood vessels as large as in heart and were frequently result
in death as well as blockage of large arteries diekstremitas.
- Retinopathy diabetikum due to damage to the blood vessels of the retina
- Diabetikum Nephropathy characterized by the discovery of high levels of protein in the urine caused damage to the glomerulus.
- Neuropathy diabetikum is characterized by a loss of reflexes and the presence of disorders of the nerves.
- Gangrene
2. Complications of makrovaskuler is the occurrence of
blockage in the small blood vessels.
- Coroner's heart disease
- Kidney Disorders
- Hypertension
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