Lecture 4- Endocrine and Metabolic Disease Flashcards
The hormones of the adrenal cortex are to maintain:
BP
Related to lack of metal cell pancreatic production of insulin:
DM
Up to 90% of DM cases are:
Type 2
For those that are pregnant, there is a 2-10% risk of getting:
gestational diabetes
For pregnant patient who gets gestational diabetes, they are at an increased risk of ___ in the future
Type 2 DM
Insulin is needed for ___ into cells
sugar absorption
A lack of insulin leads to increased ___, AKA ____
serum glucose
What does hyperglycemia result in?
undernourished tissues
What is responsible for producing insulin?
beta cells of pancreas
T/F: You can get Type 1 DM at the age of 64
True
How many people are type 1 diabetics?
10-20% of diabetics are type 1
Insulin dependent -
Type 1
Type 1 diabetes is considered a ___ disease
autoimmune
What leads to the insulin deficiency in type 1 diabetes?
destruction of pancreatic beta cells
Type 1 diabetes onset is broken down into 3 stages. Which stages are asymptomatic and which are symptomatic?
Stage 1& 2 = asymptotic
Stage 3= symptomatic
Describes how diabetes presents at the MICROVASCULAR level:
- Neuropathy
- Retinopathy
- Nephropathy
(microvascular = opathy’s)
Where are some areas that diabetics can experience neuropathy?
- extemetites
- bladder
- gastroparesis
- impotence (inability to achieve an erecton)
Describe the effects of retinopathy:
- cataracts
- blindness
Describe how diabetes presents at the MACROVASCULAR level:
- peripheral vascular disease
- CHF
- HTN
- MI
- Stroke
Why might a diabetic patient have an increased risk for MI?
Diabetes accelerates atherosclerosis
Describe the effects of diabetes on its the body ability to heal itself:
impaired wound healing and susceptibility to infection
Diabetics release ___ which breaks down soft tissue and contributes to the impaired wound healing ability seen in these patients:
collagenase
Reasons why diabetics struggle with wound healing:
- release of collagenase
- neutrophil dysfunction
- increased pro-inflammatory cytokines
- increase MMPs (Metal metalloproteinaise)
- impaired angiogenesis
- endothelial dysfunction
Type 2 diabetes may also be referred to as:
- adults onset
- non-insulin dependent
In this disease, the pancreas produces insulin but it is low in titers or is does not work properly:
Type 2 DM
What percentage of diabetics are type 2
80-90%
Fasting plasma glucose level-
Normal:
Pre-DM:
Type 2 DM:
Normal: <100mg/dl
Pre-DM: 100-125mg/dl
Type 2 DM: 126+ mg /dl
Oral Glucose Tolerance Test (2hr plasma glucose)
Normal:
Pre-DM:
Type 2 DM:
Normal: Less than 140mg/dl
Pre-DM: 140-199 mg/dl
Type 2 DM: 200+ mg/dl
HgA1C:
Normal:
Pre-DM:
Type 2 DM:
Normal: <5.7%
Pre-DM: 5.7-6.4%
Type 2 DM: 6.5%+
What is a random glucose value in a type 2 diabetic?
Greater than 200 mg/do in patients with symptoms
Measures the glycosylation of HmgA (the protein that connects HmgA where the glucose is attaching to)
A1C
If there is too much glucose in the blood stream, it attaches itself to ____ on the ____
hemoglobin; red blood cells
A stable measure not affected by QD glucose fluctuation:
A1C
A HbA1C measures the amount of:
glycosylation
There is a higher prevalences of ____ in poorly controlled diabetics.
Severe periodontal disease
T/F: According to study, short-term reduction in HbA1C levels at 3-4 months after periodontal intervention occurred, but there was not long term studies
True
T/F: There is a correlation between the severity of periodontitis and the severity of retinopathy
true
If someone has periodontitis + diabetes, this puts them at risk for more ___ & ___ complications
renal & cardiovascular
Severe periodontitis is associated with ____ ulceration
neuropathic foot
All of the diabetic drugs work to:
lower sugar in the blood stream one way or another
List the mechanism of the following diabetic drugs:
- Biguanide (metformin)
- Insulin (rapid, short, LL)
Decrease in gluconeogeneisis
List the mechanism of the following diabetic drugs:
- Sulfonylureas (Glipizide, Chlorpropamide & tolbutamide)
- Glucagon-like peptide 1 (GLP1) receptor agonist (eventide, lirglutide)
Increase in insulin secretion
List the mechanism of the following diabetic drugs:
- Thiazolidinediones (Pioglitazone)
Sensitization to insulin
List the mechanism of the following diabetic drugs:
- Dipeptidyl peptidase 5 (DPP4) (Sitagliptin
- GLP1 receptor agnoist (Exenatides, Liraglutide)
Decrease in glucagon secretion
List the mechanism of the following diabetic drugs:
- Sodium-glucose cotransporter-2 inhibitors- (canaglifozin)
- alpha-glucoside inhibitor- (Acarbose)
Intestinal & renal absorption of glucose
If the body is not getting enough sugar, then it goes to he bodies reserves to get sugar, and it breaks down cholesterol and fats into glucose to provide glucose to the blood stream but there already is glucose in the blood stream, its just not being taken up properly.
A medication that slows down the biofeedback mechanism that the body is telling itself it needs more sugars from the stores even though there is sugar in the blood stream. What medication is this?
Metformin
What are some of the oral manifestations of diabetes?
- xerostomia/dry mouth
- oral burning (not boring mouth syndrome, secondary)
- infections (bacterial, FUNGAL, viral)
- poor wound healing
- increased caries
- increased severity risk of periodontal disease
One way to tell if a diabetic patient has controlled DM or not is by:
fungal infection in the oral cavity (everyone has Candida albicans in the oral cavity, but this becomes opportunistic in diabetics)
Fasting glucose (or 2 hrs post meal) = less than 70 or greater than 200 mg/dl
HbA1C is greater than 8.0%
As a dentist you should:
- DEFER elective treatment
- If emergent, consider referral to hospital/specialized setting
- Send medical consult
Fasting glucose (or 2 hrs post meal) = less than 70 or greater than 200 mg/dl
HbA1C is greater than 8.0%
Discuss prophylactic antibiotics with this patient:
Context-dependent
With diabetes, control of comorbidities and drug interactions include:
- HTN
- HLP
- Other CVD (angina, MI, CHF, stroke)
- Renal impairment
What antibiotics/drugs should be AVOIDED in patients with diabetes?
- Tetracyclines (including doxycycline)- hypoglycemia
- Fluoroquinolones (Cipro, Levo, Leva)- hypoglycemia
- Aspirin with sulfonylureas- hypoglycemia
Many antibiotics should be avoided with diabetic patients that are specifically on ____ because it will cause ____
insulin; hypoglycemia
- tetracycline
- doxycylcine
- ciprofloxacin
- levofloxacin
- levalquin
- (fluroquinolones)
For a diabetic patient aspirin with ____ should be avoided if they are taking insulin due to risk of ____
sufonylureas; hypoglycemia
In patient with diabetes, be aware that sulfonylreas may cause:
thrombocytopenia
What medication may be responsible for thrombocytopenia in diabetic patients?
sulfonylureas
What thing of appointments is best suited for diabetic patients?
Early morning-
Describe how diabetics patients should prepare for a morning appointment:
eat normal meal and take medication(s) prior to appointment
As a dental provider, when treating a diabetic patient you should be aware of and have your patient communicate ____.
In addition, have ____ readily available
symptoms of hypoglycemia; high-concentration sugar products (OJ, cake icing, soft drinks)
____ is not recommended for diabetics as fasting is necessary
oral sedation
In what term does gestational diabetes typically present in a pregnant patient?
mid term: ~24-28 weeks
Between 2nd and 3rd term
The ovaries are responsible for releasing:
estrogens & progesterone
Pregnancy can be a stressor to:
oral health
Pregnancy is ___ weeks, from the first day of last menstrual cycle
40 weeks
First Trimester:
Second Trimester:
Third Trimester:
First Trimester: 0-12 weeks
Second Trimester: 13-28 weeks
Third Trimester: 29-40 weeks
Dental procedures could harm the developing fetus through the effects of: (3)
- ionizing radiation
- drugs
- stress
Drugs can harm the developing fetus and continues postpartum from transmission of drugs via:
breast milk
Common pregnancy discomforts:
- nausea & vomiting
- indigestion
- headaches
- polyuria
- lumbar pain
- perspiration
- breast tenderness
Why might a pregnant person experience nausea and vomiting?
hormonal imbalances, stress (physical & emotional) and hyperacidity
Pregnant women have indigestion, especially with:
digesting foods rich in fats, sugars, and acids
What is important to do regarding a pregnant womans oral health?
Maintain optimal oral health
T/F: It is okay to perform elective dental care during the first trimester of pregnancy
False- Avoid elective dental care doing the first trimester
T/F: Second trimester is the best time to perform dental treatment on pregnant lady
True
T/F: After middle of third trimester, elective dental care is best postponed
True
T/F: Dental treatment can be safely performed in all trimesters
true
Lack of proper oral health care during pregnancy could:
- harm developing fetus
- affect the time of delivery
When taking radiographs of a woman of a childbearing age you should inquire:
if the patient could possible be pregnant
The gonadal/fetal dose incurred with 2 PA images when a lead apron is used is ____ times less than that for 1 day exposure to natural background radiation ins the U.S.
700 times
Describe when a radiograph is acceptable during pregnancy:
Radiographs are contraindicated in ALL but EMERGENCY situations. When taken, lead shielding is mandatory
List the guidelines for radiographing “NEW AND RECALL PREGNANT DENTAL PATIENTS” at UMKC SOD:
Radiographs should be postponed until post-partum
T/F: Long term benefit to the health of the mother from new patient or recall exam radiographs. Also benefit to health of developing child.
First statement true
Second statement false- NO benefit to health of developing child
When radiographing a pregnant person,
The ____ faces greater risks for mt the radiation exposure than the ____, without any benefit to their health
unborn child; mother
The ______ recommends different radiation exposure thresholds for pregnant radiation workers than non-pregnant radiation workers
National Council on Radiation Protection and Measurements (NCRP)
Radiation exposure thresholds for pregnant radiation workers is lowered to the same thresholds as the:
general population
What guidelines does the UMKC SoD follow in regards to pregnant persons?
NCRP recommendations
For emergency pregnant dental patients:
- necessary radiographs are part of the standard of care to treat and diagnose a condition that threatens the health of the other and the unborn child
- Lack of radiographs compromises the emergency care diagnosis and treatment (and tis will directly impact the health of the unborn child)
- Primary beam is NOT directed toward the child bearing area
When is it okay to perform EMERGENCY dental care during pregnancy?
may be provided as needed any time during pregnancy
What procedures should be performed on a pregnant lady to avoid stress of the mother and endangerment of the fetus?
pain control and elimination of infections
When performing emergency dental treatment on a pregnant person, this may require a consult with the OBGYN, if there is:
a concern about medications or effect of emergency treatment on the fetus
T/F: Untreated dental infection may pose a risk to the developing fetus
True
___ & ____ may precipitate a spontaneous abortion.
fever & sepsis; this is why we have to treat emergent dental issues on pregnant women
In advanced stages of pregnancy (late third trimester), avoid the ____ position for long periods
supine
Why should the supine position be avoided in advanced stages of pregnancy?
Supine Hypotension Syndrome
What is supine hypotension syndrome?
Occurs late in 3rd trimester; due to compression of the inferior vena cava that results in impaired venous return to the heart.
Supine hypotension syndrome is due to compression for the:
inferior vena cava
Supine hypotension syndrome manifests as:
- fall in BP
- bradycardia
- sweating
- nausea
What happens if your patient is experiencing supine hypotension syndrome?
patient can rotate to their side to allow venous return to recover. (studies indicated that the LEFT side is the best)
Discuss taking drugs during pregnancy:
All drugs should be avoided during pregnancy if possible. Benefit should outweigh potential risks
T/F: Most common dental drugs can be safely used in pregnant patients.
True
Discuss use of local anesthetics in pregnant individuals:
Do not exceed maximum does of LA- lido with or without epi is safe
Avoid ___ & ____ due to:
1. closure of the ductus arteriosus
2. risk of postpartum hemorrhage and delayed labor
aspirin and NSAIDS
Aspirin and NSAIDs should be avoided during pregnancy due to: (2)
- closure of the ductus arteriosus
- risk of postpartum hemorrhage and delayed labor
What is the analgesic of choice in a pregnant patient?
acetominophin
When are opioids acceptable during pregnancy?
Opioids should be avoided and only used when absolutely necessary and in consultation with physician
What is typically preferred for the effects of opioids in a pregnant patient while avoiding opioids?
Codeine with acetaminophen (APAP)
ACCEPTABLE antibiotics during pregnancy: (5)
- Amoxicillin
- Azithromycin
- Clindamycin
- Erythromycin
- Metronidazole
CONTRAINDICATED antibiotics during pregnancy: (2)
Why?
- Tetracycline
- Doxycycline
These antibiotics are teratogenic
Discuss sedation during pregnancy: (2)
- No pharmacologic sedation is preferred
- If absolutely necessary, NO may be used for less than 30 minutes with at least 50% O2
T/F: A pregnant patient would not have multiple appointment or extended appointment with NO sedation as cumulative effects are a point for concern
True
You should avoid NO during ____ trimester. As always, appropriate oxygenation after nitrous is necessary to avoid diffusion hypoxia
first trimester
T/F: Benzodiazepines are okay to take during pregnancy
False
If you plan on using any type of sedation (including NO), during pregnancy, you must:
consult physician
Women of child-bearing age should not be chronically exposed to nitrous in an occupational capacity for more than ____ hours per week with out scavenging equipment
3
Women of child-bearing age should not be chronically exposed to nitrous in an occupational capacity for more than 3 hours per week with out scavenging equipment due to the risk for:
decreased fertility & greater rates of spontaneous abortion
Pregnant radiation workers should wear dosimeter monitoring devices to monitor occupational dose limits and assure the annual effective dose is:
less than or equal to 1mSv/yr
What is the occupational limit for radiation?
1mSv/yr
The average dental occupational exposure is ____ although 68% of dental workers have readings BELOW the threshold of detection
0.2mSv/yr
T/F: Most drugs are of little pharmacologic significance to lactation. Medications should be take just before breastfeeding
First true, second false
What is another name for a pregnancy tumor?
Pyogenic granuloma also epulis gravidarum
In pregnancy, this is an exacerbated response to plaque and bacteria precipitated by the changes in progesterone and estrogen hormonal levels; not an actual granuloma as there is proliferation of vascular and fibrous tissues
Pyogenic granuloma
Gestational diabetes risks to fetus:
- hulk of a baby
- lung development
- c-section may be warranted
What is the preferred treatment for a patient with gestational diabetes who is not responding to conservative measures?
Metformin (PO)
The adrenal gland is responsible for secreting:
- cortisol
- aldosterone
- adrenal androgens
_____ come from the medulla of the adrenal gland
catecholamines
Where does aldosterone, androgens, and cortisol come from?
adrenal cortex
Give an example of a mineralcorticoid:
aldosterone
Where does aldosterone act?
Distal tubules of kidney
AlDosTerone acts on the Distal Tubules of kidney to:
- Intravascular volume
- Acts on RAA system
- Regulates Na/H20 balance (affecting BP!!!)
What hormone of the adrenal cortex is responsible for increasing contractility and vascular reactivity to vasoconstriction, therefore increasing BP?
cortisol
Cortisol is classified as a:
glucocorticoid
Cortisol antagonizes:
insulin
What adrenal hormone is known for
- activating lipolysis
- stimulating gluconeogenesis
cortisol
What is cortisols effect on blood sugar?
increases sugar
Catecholamines norepinephrine and epinephrine (from adrenal medulla) are responsible for:
- fight or flight stress response
- BP increase
- peripheral resistance
- cardiac output
- Increased aldosterone, cortisol, androgens, and estrogens (isolated or in combo)
Hyperadrenalism
What are some symptoms of hyperaldosteronism?
- hypertension
- hypokalemia
- edema
What is the most common adrenal insufficiency?
glucocorticoid excess
Glucocorticoid excess means there is too much:
cortisol
Cushing DISEASE is caused by:
pituitary or adrenal gland tumor
Cushing SYNDROME is caused by:
exogenous corticosteroids
Complications of glucocorticoid excess (cortisol excess) include:
- DM
- HTN
- Weight gain
- Moon facies
- Buffalo hump
- Hirsutism
- Acne
- Osteoporosis
- Heart failure
- Delayed wound healing
- Susceptibility to infection
- Irregular menses
- Insomnia
- Peptic ulcers
- Psychiatric disorders
- Glaucoma
- Cataracts
Describes the collection of signs and symptoms associated with bushings syndrome:
cushingoid
Mnemonic: CUSHING GOID
C-ataracts
U-lcers
S-triae & skin thinning
H- ypertension & hirsutism (chick w a beard)
I-mmunosupressive infectons
N- ecrosis of femoral heads
G- lucose elevation
O- steoporosis & obestity
I- impaired wound healing
D- depression & mood changes
- prednisolone
- triamcinolone
- methylprednisolone
These are all:
Immediate-acting glucocorticoids
- Dexamethasone
- Betamethasone
These are:
Long-acting glucocorticoids
Primary adrenal insufficiency:
addison’s disease
Addisons disease involves destruction of the adrenal cortex leading to:
LOW cortisol & HIGH ACTH
The following are cutaneous findings of ____.
- hyperpigmentation of skin and mucous membranes
- longitudinal pigmented bands in the nails
- vitilligo
- Decrease axillary and pubic hair in women
- calcification of auricular cartilage in men
Addisions
LOW cortisol & LOW ACTH:
Secondary adrenal insufficiency
Secondary adrenal insufficiency is caused by:
impaired/destructive pituitary disease
Tertiary adrenal insufficiency is caused by:
impaired function of hypothalamus
Most commonly a result of exogenous steroid use:
tertiary adrenal insufficiency
What may be a consequences of BOTH hyperadrenealism and adrenal insufficiency
Impaired wound healing