Presentations mixture of highlights!!!!!!!! Flashcards
I am just putting together a mixture of topics from the power points presented!!!!!!!!!!!
Asthma and bronchospasms
this is the first topic!!!!!!!!!!
what is asthma?
a chronic pulmonary disease characterized by airway inflammation, airflow obstruction, and bronchial hyper-reactivity
5 manifestations of asthma
dyspnea
wheezing
chest tightness
cough
2 types of asthma
Atopic
non-atopic
which asthma is the most common type?
atopic
Which asthma is:
type I IgE mediated hypersensitivity reaction
usually beings in childhood
triggered by environmental allergens
skin test with antigen shows wheel and flare reation
Atopic
Which type of asthma is:
viral respiratory infections are common trigger
inflammation associated hyperirritability
family hx less common
no evidence of allergen sensitization
non-atopic
Patho of atopic Asthma
big ass slide just read over be familiar with different phases and basic process!!!
-initial exposiure to the allergen stimulates the TH2 cells to:
—-secrete inflammatory cytokins
—- trigger the B cells to produce IgE
- IgE coated mast cells
-repeated exposure to allergen triggers the mast cells to release granule contents and produce cytokines and other mediators
-EARLY PHASE
-bronchoconstriction, increased mucus production, vasodilation with increased vascular pearmeability
LATE PHASE
- epithelial damage and additional inflammation and airway constriction
You can do it!!
just a word of encouragement!!!!
Bronchoactive drugs! give examples of each category B2-adrenergic agonist? Anticholinergics? MastCell stabilizers? Corticosteroids? Luekotriene receptor antagonist?
B2-adrenergic agonist? ----albuterol; terbutaline; metaproternol Anticholinergics? ---- ipratropium bromide MastCell stabilizers? ---- cromolyn, nedocromil Corticosteroids? you know them there is a million Luekotriene receptor antagonist? ----- Muontelukast, Zafirlukast, and Zileuton
Quickly how do each of the following drug categories work for asthma (should know incase our pt's get asthma attack in OR) don;t go deep (lol) please give it a try you'll surprise yourself!!!! B2-adrenergic agonist? Anticholinergics? MastCell stabilizers? Corticosteroids? Luekotriene receptor antagonist?
B2-adrenergic agonist?
–directly relax smooth muscle of airway
Anticholinergics?
—- antimuscarinic bronchodilating effects in bronchial smooth muscle and blocking constriction of vagal efferent stimulation
MastCell stabilizers?
—- prevention and reduction of inflammation
Corticosteroids?
—- anti-inflammatory
Luekotriene receptor antagonist?
—- inhibits leukotriene production (part or thr arachidonic acid pathway)
GA implications with ASTHMA::
- GA may trigger asthma exacerbation
- alteration of diaphragmatic function
- impaired ability to cough
- decreased mucociliary function
- stimulation/irritation of airway by ETT
_______ and _______ of the most recent asthma attacks are the most significant predictors of bronchospasms!
proximity and severity
Changes in lung function can also leas to ______, _____ ______, and ________ postoperatively
atelectasis
mucus plugging
wheezing
Asthma exacerbation intra-op can also lead to what?
prolonged intubation
hypoxemia
pneumonia
Recent studies have found NO links between higher risks postop complications and pts with asthma? true or false
true
from a study!!!!
pt’s with asthma who are well controlled and who have a peak flow measurement of > __% of predicted or personal best can proceed to surgery at average risk!!
80
preop assessment for asthma
inspection auscultation questions -age of onset -triggering events -allergies -cough sputum characteristics Current meds (and effectiveness) smoking HX Anesthetic HX -asthma related complications Hospitalizations for asthma -freq of ER visits -Hx of intubation and mechanical ventilation
Preop management and interventions for the asthmatic
Chest PT
antibiotic therapy
Bronchodilator therapy (continue day of SX)
corticosteroids (stress dose if indicated)
—-stress dose hydrocortisone 100mg IV
Asthma classifications Intermittent asthma- Mild persistent asthma- mod persistent asthma- severe persistent asthma-
really way to much for a slide!!!! see ppt slide 23 if you want
Intraop management for asthma
- regional if not contraindicated
- Avoid non-selective BB (propranolol and Labetalol)
- Avoid NSAIDs (toradol)
- Avoid histamine releasing drugs ( morphine, atricurium, suxs, mivacurium, demerol, thiopental)
Intraop agents (tell me their effects) propofol- Ketamine- Lidocaine- VAAs-
propofol- bronchodilator
Ketamine- smooth muscle relaxant and decreased airway resistance
Lidocaine-supress airway reflexes (inhaled can assist)
VAAs- all are potent bronchodilators (sevo least irritating)
Extubation for Asthma-
deep- controversal
bronchodilator- albuterol
IV lidocaine
S/S of bronchospasm
- high inflation pressures
- expiratory upsloping on ETCO2
- prolonged expiration
- decreased O2 sat
- expiratory wheezing
- decreased breath sounds
treatment for bronchospasm
100% O2 Increase anesthestic beta agonist (terbutaline 0.25mg SQ; albuterol) anticholinergic ( ipratropium bromide) Lido IV Epi- corticosteroids
Next section is COPD!!!
Great job on the last section!!!!!!!!!
Name 5 common obstructive disorders
Emphysema Chronic bronchitis Asthma Bronchiectasis OSA
______ and ________ are often clinically grouped together and refered to as COPD
emphysema
chronic bronchitis
Emphysema and chronic bronchitits are often clinically grouped together and refered to as COPD, since many people have overlapping features of damage at both the acinar level and bronchial level, almost certainly because of the extensive trigger _______ _______ is common in both
cigarette smoking
about ___% of people with COPD are NON-smokers
10%
COPD is commonly diagnosed how
PFTs via spirometry
the PFT findings GOLD criteria for COPD is
Low FEV1/FVC= 70%
What is the severity of COPD based on the FEV1/FVC mild moderate severe very severe
mild- >80%
moderate- 50-79%
severe- 30-49%
very severe- <30%
Define emphysema
abnormal permanent enlargement of airspace distal to the terminal bronchiole,
Acinar refers to what?
emphysema
2 types of emphysema? (most prominant 95%)
centiacinar
panacinar
which type of emphysema is:
central lobes of acini are primarily affected, distal alveoli are spared, seen predominately in heavy smokers
Centiacinar
which type of emphysema is:
entire acinus is affected, associated with alpha1-antitrypsin deficiency
panacinar
s/s of emphysema
dyspnea @ rest dry cough pursed lip breathing wheezes with auscultation long expiratory pause barrel shaped chest
Define chronic bronchitis
mild chronic inflamation throughout the airways, parenchyma, and pulmonary vasculature
S/s of chronic bronchitis
Impressive cough productive sputum
wheezes or crackles
dyspnea (late)
cor pulmonale/ right sided heart failure (late)
Define brochiectasis
disease characterized by permanent dilation of bronchi and bronchioles caused by destruction of the muscle and elastoc tissue, resulting from or associated with chronic necrotizing infections
COPD pre-op eval
questions to ask
ADLs presence of infections sputum triggering agents meds and effectiveness time of symptoms (day night) previous anesthesia hx OSA
smoking is associated with __-_____ deficiency
alpha1-antitrypsin
COPD peri-op management
supress neural reflexes Inhibit increased intracellular Ca++ Control airway inflammation eliminate secretions maintain VQ
COPD anesthetics
VAAs-
IV agents-
avoid what???
VAAs- iso or sevo (greater broncho=dilators)
IV agents- propofol (direct vagal mediated relaxation of airway smooth muscle)
-Ketamine- bronchodilatory effects
avoid what- barbiturates (histamine release)
Peri-op mechanical ventilation
Increase expiratory time --- can also increase inpsiratpory time --- I:E 1:6 Auto peep- --- detection with expiratory hold .5-1 sec --- detect with auscultation Reduce MV --- decreased TV --- Decreased RR
Periop COPD with O2
maintain PaO2 at 55-75 mmHg or near the pts norm, with FiO2 less than .5
Keep PCO2 where
normal range 50-60 mmHg (pH .3-7.4)
Wonderful job.. Now of to pneumona
PNE=pneumona
Yeahhhhhhh!!!!!
Define pneumonia
an infection of the lower respiratory tract caused by bacteria, viruses, fingi, protazoa, or parasites; results in an inflammatory response and fluid accumulation in the alveoli
Pro-op assesment for PNE
s/s of PNE
fever/chills N/V Cough Chest pain diaphoresis cyanosis in nailbeds/lips AMS headache muscle pain weakness crackles
Etiology of PNE
advanced age immunocompromised underlying lung disease alcoholism impaired swallowing AMS immobilization ETT malnutrition CV or liver disease Chronic exposure to irritants
immunocompromised pt’s at risk for PNE
HIV Cystic fibrosis Meds from transplants autoimmune diseases Asplenia pregnancy DM
4 main causitive agents for PNE
bacterial
viral
Fungal
Parasitic
Most common type of bacterial PNE
streptococcus pneumoniae
Bacterial PNE s/s: the pt may present with a cough and what color sputum???
green, yellow, rust colored
common types of viral PNE
rhinovirus coronavirus INFLUENZA VIRUS RSV CMV
Fungal PNE is seen in pts with what
AIDS (PCP)
chemotherapy
Parasitic PNE is most common in what patients
Immigrants
immune deficient
people after traveling
PNE can be classified as what 5 categories?
atypical community acquired nosocomial aspiration ventilator associated
PNE is also classified by the area of lung affected and divided into what 2 classes
Lobar
bronchial
What is atypical PNE
aka walking PNE
sicker than they appear
caused by atypical organisms
atypical symptoms
CAP
Pt has not been in hospital
most common pathogen is streptococcus pneumoniae
Nosocomial PNE occurs when
> 48 hrs after admission
Anesthetic considerations for PNE
Semi-recumbent position (when able) NGT-OGT secretion management NPO status ensure proper cuff pressure (20-30 cm H20 TCDB H2 blockers Antiemetics higher FiO2 may be needed (if active) watch for airway irritation
ok next is PE you are on a good tract, just keep reading and flipping it will all come to you!!! you are smart you can do this this!!
I meant smart ass!!! but none-the-less you still got this shit!!!
define PE
impaction of foreign material into the pulmonary circulation, specifically the pulmonary arteries
Etiology of PE
90% DVT
Less common
– air, bone, tumor, amniotic fluid, fat, CO2
Etiology of PE r/t hereditary conditions
factor V leidan
protein C deficiency
Protein S deficiency
Antithrombin Deficiency