Diabetes mellitus Flashcards
What us diabetes mellitus?
Elevated blood concentration (hypeglycaemia) which over time leads to damage to small and large blood vessels causing premature death from cardiovascular diseases
Why is diabetes a major concern?
Kidney disease
Blindness
Lower limb amputation
Cardiovascular disease
Major risk factor diabetes type 2
Obesity
2 principle mechanisms of diabetes
Inability to produce insulin Insulin resistance (production is fine) - obesity
Type 1 diabetes
Autoimmune destruction of B cells Genetic predisposition - HLA, MHC class 2
Presentation of diabetes mellitus
Polyuria
Polydipsia
Weight loss
(lethargy, weakness, blurring vison, thrush)
Diagnosing diabetes
Fasting glucose
Oral glucose tolerance test
HbA1c - glucose coupled to proteins
Diagnosis diabetes needs
Symptoms and 1 abnormal test result
2 abnormal results if no symptoms
Presentation of type 1 diabetes
Rapid onset (weight loss, polyuria, polydipsia) Late - vomitting from KETOACIDOSIS
Young patient, ketones
Treatment type 1 diabetes
Subcutaneous insulin injections
Ketone production why?
Insulin supresses ketone production (unless starvation mode)
Ketoacidosis clinical triad
Hyperglycaemia
Ketonaemia (>3mmol/L)
Acidosis (ph <7.3)
Type 2 diabetes reasons
Obesity - particularly central
Muscle and liver fat deposition
Physical inactivity
Genetics
Treatment type 2 diabetes
Gastric bypass - low calorie diets
WEIGHT LOSS
Lifestyle changes
Type 2 diabetes symptoms
Slower rise in blood glucose
Polyuria, polydipsia, weight loss
NO KETONES