HTN - Thyroid Disorders Flashcards
what is the ASA classification is a pt is healthy but very anxious? what about unhealthy and cannot tolerate added stress?
ASA 2
ASA 3
what is the most common way for a patient to die?
premedication (should do it in-office)
most frequent cause of respiratory difficulty in a dental setting?
hyperventilation
S/S of respiratory distress
(inc CO2 elimination cause alkylosis
- light headed
- tingling in fingers, toes, perioral
- caropedal spasm
- twitches, convulsions
- loss of consciousness
tx of respiratory distress
- terminate procedure
- position nearly upright
- verbally reassure the patient
- rebreathe CO2 rich air (small bag)
- reschedule with better plan for anxiety
most common diagnosis in the US
hypertension
signs for hypertension?
earliest: elevated BP reading
advanced: severely elevated BP involving target organs
“silent disease” bc asymptomatic for many years
what is the drug therapy of HTN
thiazide diuretic “water pill”
what are the follow-up questions with HTN?
- date of dx
- typical reading
- tx recommendations and compliance
- any recent changes in prescribed meds
- ever been tx in ER for symptoms
- functional status
if the BP reading is very high (160/100) but they feel fine today can you procede with routine dental tx?
yes
what should we be careful of with HTN pts?
- avoid gingival retraction cord
- slow chair repositioning
- limit epi usage
- limit NSAID usage
what is the most likely cause of coronary artery disease?
HTN
does nitro work for angina relief?
yes for stable (good prognosis)
no for unstable (probs MI)
what is the tx for coronary artery disease?
- reduce risk factors for CV disease
- stress management, weight loss, excersice
- drugs
- revascularization
what are the meds that assist with coronary artery disease?
- nitroglycerin (vasodilator that reduces what comes back to the heart)
- beta-blockers
- anti-platelet therapy
what are the surgical strategies to treat coronary artery disease?
- angioplasty +/- stent
- bypass graft
bare metal stent
10-15% re-stenosis within 6 months
-used for pts that already have blood disorders and cant go on blood thinners
drug-eluting stents
release antiproliferative agents to inhibit re-stenosis
- INC RISK OF THROMBOSIS FOR 1 YEAR
- ANTI-PLATELET THERAPY (ASPIRIN or CLOPIDOGREL)
what are the questions to ask when dealing with coronary artery disease or angina?
- date of diagnosis
- did you bring nitro with you
- have you had an MI
- what resovlves your angina?
what is an intermediate risk pt for coronary artery disease and can you treat them?
- stable angina
- past MI (> 1 month)
yes you can do elective care but be cautious and recommend consultation with cardiologist
what is a major risk pt for coronary artery disease and can you treat them?
- unstable angina
- recent MI (
how does a dentist treat a pt with stable angina or a past MI?
- adequate analgesics post op
- profound anesthesia
- stress reduction for anxiety
- anticipate bleeding and DO NOT prescribe anti platelets
- give a comfortable chair position
- avoid ultrasonic
what do you do if there is an emergency angina attack?
- stop procedure
- nitro (1 tab Q5 minutes up to three doses)
- O2 via nasal cannula
how does a dentist treat a pt with unstable angina or recent MI?
same as with stable except:
-give prophylactic nitro, supplemental O2, and modest epi
what happens if an angina pt is NOT responding to tx during an attack?
activate EMS
have pt chew an aspirin
continue BLS
where is the fluid backup during left sided heart failure?
lungs (congestion)
where is the fluid back during right sided heart failure?
feet, legs, and abdomen
what are the 4 classes of heart failure?
1: no symptoms with activity
2: symptoms with activity, none at rest
3: marked limitation, symptoms with MINIMAL activity but none at rest
4: symptoms at rest and get worse with activity
what drugs can help manage heart failure
- diuretics (less volume the heart has to pump)
- beta blockers
- ACE inhibitors (dilate vessels)
- digoxin (last resort drug due to toxicity)
- supplemental O2 at home
also heart transplant or left ventricular assist deveice
what is the goal of the dentist when dealing with a pt with heart failure
keep the CV system normal (no big shifts)
what follow-up questions should a dentist ask a pt with heart failure?
- date of dx
- do you regularly see your physician?
- compliance with therapy?
- any symptoms today?
- —coughing wheezing, SOB.
- —swelling in feet, ankles, legs and weight gain from fluid and m fatigue
how would you go about treating a pt with ASYMPTOMATIC/MILD heart failure?
elective tx ok
plan:
- reduce stress/anxiety
- may not tolerate supine position
- avoid epi with digoxin
- avoid NSAIDS
how would you go about treating a pt with SYMPTOMATIC heart failure?
elective care deferred
emergency care limited to non-invasive procedures
—must consult with physician
what is the 3rd leading cause of death in the US
COPD
what are the three causes of COPD
- smoking
- genetics
- occupation
which disease of COPD involves both inspiration and expiration?
bronchitis
BLUE BLOATERS
which disease of COPD involves expiration only
emphysema (enlarged air spaces and loss of elastic recoil)
retain CO2 so…. PINK PUFFERS (barrel chested)
how do you test for COPD?
spirometry
measure of how much a person can exhale in one second
what drugs are used to medically treat COPD pts?
- anticholinergics
- inhaled steroids
- supplemental O2
- THEOPHYLLINE for severe cases
- antibiotics PRN
can you treat a COPD pt if they have symptoms present when they walk into your operatory?
(SOB at rest, productive cough, upper respiratory infection)
reschedule elective tx until they are under control
can you treat a COPD pt if they are stable?
yes just dont do anything to aggravate their symptoms
- upright or semi-supine chair position
- dont do bilateral IAN blocks
- NO2 ok in mild cases but avoid in severe cases (must fluch out with O2 afterwards)
what drugs should you AVOID when dealing with a COPD pt?
- anticholinergics/antihistamines (anything that will further dry the pt out)(they will probs already be on an anticholinergic so dont give any more)
- narcotics and barbituates (further dec respiratory drive)
- theophylline toxicity with macrolide antibiotics and cipro
does asthema normally affect children or adults?
children (may spontaneously resolve after puberty or may progress to COPD)
how do you medically manage an asthma pt?
limit exposure to triggering agents
what is the drug selection for asthmatics?
inhaled beta 2 agonists
-if there is an attack in the office make sure you use SHORT acting beta 2 agonists (inhaler)
what are the indication for a sever asthma disease?
- frequent exacerbations
- exercise intolerance
- multiple scheduled meds
- ER visits
what must the dentist do differently when treating astmatics?
- remind pt to take meds by doctor
- stress/anxiety management, NO2 sedation
- avoid triggers:
- —-LA without vasoconstrictors
- —-avoid aspirins and NSAIDS (ask if they tolerate these drugs)
what do you do if there is an asthma attack in your office?
- short acting beta 2 agonist (inhaler) repeat Q20 minutes
- epi for refractory symptoms
- O2
- monitor vitals
- activate EMS PRN
severe prolonged asthma attack that is refractory to normal therapy and is associated with respiratory infection
can lead to exhaustion, dehydration, peripheral vascular collapse, and DEATH
status asthmaticus
what affects the chances of someone contracting TB?
- number of organisms inhaled
- immune function of individual
1/3 of the worlds population
most common site of the TB infection
lungs
alveolar macrophages ingest the bacteria and the bacteria replicate within
can become systemic
90% of TB pts are asymptomatic but how would you discern if someone had it?
positive TB skin test (measures the delayed hypersensitivity response)
lab test: 3 consecutive positive sputnum cultures
what does the CDC recommend for chemotherapeutic regimen for a positive TB test?
4 drug therapy
—-isoiazid, rifampin, ethambutol, pyrazinamide
pt will ALWAYS show a positive test even if they go through tx
how does a dentist proceed if a pt has clinically active, sputnum, positive TB?
- NO outpatient tx
- isolation and ventilation systems in hospital setting
- treated like all other pts once physician confrims they are non-infectious after chemo