CP Flashcards
atelectasis shifts heart
toward same side
pneumothorax shifts heart
away
Left coronary artery divides into
Anterior descending
Left circumflex artery
What carries deoxygenated blood to lungs
Pulmonary arteries
Left coronary artery - anterior descending - supplies what
anterior portion of interventricular septum
Left coronary artery - circumflex - supplies
Left atrium
Post and lat walls of LV
An and inf wall of LV
Right coronary artery divides into
Sinus node artery
Right marginal artery
Posterior descending artery
Right coronary artery - sinus node supplies
Right atrium
Right coronary artery - right marginal artery - supplies
Right ventricle
Right coronary artery - posterior descending artery supplies
Inf walls of both ventricles
Inf portion of the interventricular septum
Extrinsic heart regulation
Vagus (dec HR - decrease conduction at AV) Upper thoracic (inc HR - accelerates d/c from SA to AV)
SA node
pacemaker
Inate (without vagal influence) - is 100-110 bpm
But vagal influence - 60bpm
AV node fires at
40-60 bpm
Ventricles fire at
bundle of his - bundle branches - purkinje fibers
20-40 bpm
P wave
Atrial depolarization
0.08 - 0.10
PR
time to pass through AV junction
Norm is 0.12 - 0.20
QRS
Depolarization of ventricles
0.04 - 0.10
T wave
repolarization of ventricles
QT
total time for deplarization and repolarization of ventricles
Less than or equal to 0.44
Lead 2 (most common) shows what
Depolarization from R to L heart in diagonal
Procedure for ECG eval
Evaluate P (atria, SA node) Evaluate PR (AV node) Evaluate QRS complex (ventricles) Evaluate QRS interval (ventricles) Evaluate T wave R-R interval (rate)
Heart blocks
1st = really long PR int
2nd type 1 = prog lengthened PR, drops every 4th
2nd type 2 = fixed long PR, drops every 2nd, 3rd, 4th
3rd = separate firing of atria and ventricle
Bundle branch blocks
Right - Rs go below isoelectric line
Left - Rs do not go below isoelectric line (mountain looking one)
Ischemia will show
ST segment depression
Myocardial injury will show
ST segment elevation
Box drawing for heart sounds
T between RA and RV, M between LA and LV
P after RV, A after LV
S1 at T and M
S2 at P and A
Dias above S1, Sys between, Dias below S2
S1 split
Heard at the bottom of the heart
Commonly due to RBBB
Tricuspid closing later than mitral
S2 split
Heard at the top of the heart
Can be normal in children
Pulmonary closing later than aortic
S3 occurs when
AFTER S2
Early ventricular filling after AV valves open
Due to diastolic distention and vibration of the ventricular walls
CHF
Heard best with bell
S4 occurs when
Right BEFORE S1
Rapid ventricular filling after the atrial kick
Ischemic heart disease, HTN
Pulm restriction
Trouble getting air in
Pulm obstruction
Trouble getting air out
Crackles
Low pitched on INSPIRATION
Ronchi
Low pitched on INSPIRATION and EXPIRATION
obstructive process
Wheezes
High pitched
bronchospasms
Pleural friction rub
Typically louder with inhale
Preload
The amount of stretch in the LV at the end of diastole
Afterload
Systemic vascular resistance
Amount of resistance the heart has to overcome to open the aortic valve and push blood volume into systemic circulation
Nitro will
Decrease preload and afterload by VD
Will also redistribute coronary blood flow to dec O2 demand of the heart
Sublingual in supine (used for angina)
Side effects - HA, dizzy, Ortho hypo
Ca channel blocker
Dec contractility, Dec HR, Dec BP
VD
Ace inhibitor
Prevents conversion of angiotensin 1 to angiotensin 2
Prevents Na and H20 retention - so dec afterload
Dec BP by dec arteriole constriction
“ril”
Dec release of aldosterone and ADH
Beta blockers
“lol”
Dec HR and contractility which dec O2 demand of heart
Dec CO
Will block beta 2 in rest of body too so BronchoCONstirction and dec BP with VC
Side effects = Bradycardia, chest pain, hypotension
Troponin elevates ___ and stays for ___
Troponin elevates in 1 to 2 hours after MI and stays up for 10 days
Myoglobin elevates quickly and then drops quickly after MI so not as good to look at as troponin
Congestive heart failure - tx
Fluid and Na restrictions
Diuretics (to dec preload)
Ace inhibitors, beta blockers, Na/fluid restrictions, VDs, Positive ionotropes (inc contractility)
Four classes of antiarrhythmic agents
Na channel blockers
Beta blockers
K channel blockers
Ca channel blockers
For pts on antiarrhythmic drugs - exercise might
exacerbate their arrhythmia
Might have hypotension
Might have poor response to exercise
Positive ionotropic drugs do wht
increase contractility
Frank starling relationship
Inc fiber length = stronger contraction
Fiber stretch length detmines strength of contraction
Digoxin
Pos ionotropic agent
(cardiac glycoside)
Inc contractility through inc in Ca conc, dec HR by blocking Na/K ATPase
Allows for more time for blood to flow from atria to ventricles
Digoxin toxicity
Low margin of safety - Lethal dose is only 5-10x minimal effective dose!
Do not take with diruetics! - enhanced morbidity when combined
N/V, arrhthmias, visual/neuro disturbances
BP lowering meds
Diuretics (dec preload) Beta blockers (dec HR and cx and afterload and BP) ACE inhib (VD, dec conc of fluid, dec BP)
Swan Ganz
Catheter is passed through R side of heart into pulmonary vessels
Immediate profile of CO and pulm artery pressure
DO NOT TREAT!
Pulmonary artery pressure norm
Measured with swan ganz
5-15 is normal
Pt should NOT be horizontal if over 12
Precautions with art line
If wrist - keep straight
If femoral - don’t flex more than 45
Turn only to 90 in sidelying
Central venous catheter
Through internal jug, subclavian, or femoral veins
Tip enters SVC
Gives status of volume and R ventricular function = Measures R arterial pressure
Normal Central venous pressure
0 to 6
PICC line
Through basilic, medial cubital, or cephalic vein at antecubital space
Tip advances 1/3 of SVC
DONT FLEX ARM OVER 90
ICP precautions
0-15 norm, DONT TREAT over 20
If sit pt up, make sure to CLAMP (NEED ORDER TO DO SO)
CODMAN DRAIN
ICP bolt
Camino bolt - Draining the subarachnoid space
NOT WORKING WITH THEM
CPP
Cerebral perfusion pressure MAP minus ICP BP that is available to perfuse the brain Should be 60-150 mmHg If above 150 = NOT WORKING WITH THEM
Intra aortic balloon pump (IABP)
Assist with circulation
No hip flexion at site
Strict bed Frest!
ONLY ACTIVITY IS LOG ROLL
Feeding tubes
NG = nutrition more than 3-4 wks PEG = long term enteral feeding Gastrostomy = bolus feeding Jejunostomy = good if no gag reflex (also bolus)
Keep head of bed elevated 30 deg when eating!!!
WATI 15-20 MIN after eating to lay flat!!!
Clamp and disconnect for tx
Jackson pratt
Commonly used to eliminate air or blood from the abdominal cavity or drain blood from skull
NEED TO TAPE TO PERSON TO GET THEM UP
Most common dialysis = hemodialysis
Filters blood by moving it through a semipermeable membrane outside of the body and then returning it
3-4 hours long, 3x/wk
Dialysis precautions
Do not exercise before or immediately after
1L O2/min =
24%
Nasal canula can deliver
1-6 L
Significant desat - how much
3%
Should come back to baseline within 1-2 min - if not, need to adjust tx
Suction device PTs can use
Oropharyngeal suction AKA Yaunker
Suction for 5-10 sec as you are withdrawing the tube!
Most mechanical ventilators are
positive pressure ventilators
Tidal volume - is what and norm
Volume of air in a normal breath
Normal is 5-10 ml/kg BW
10-15 for vent patients
Constant minute ventilation
vent does everything
Assist control vent
min # of assisted breaths, if not met gives fixed TV
SIMV
Set min # of assisted breaths and TV
Pt can breathe above it, but depends on pt effort
Mandatory minute vent
Sets min # of breaths
Only breathes for pt when needed
CPAP
Maintains positive airway pressure
NIPPV
Non invasive - just a mask with O2
COPD =
20% Emphysema (pink puffer) and 80% Chronic bronchitis (blue bloater)
Acute resp failure - PaO2 and PaCo2
PaO2 = less than 60 mmHg PaCO2 = more than 50 mmHg
Signs of resp distress
Hypoxia - inc RR, BP, HR, resless, cyanosis
Hypercapnia - HA and LOC changes
Functional residual capacity
volume of air in lungs after normal exhale
= ERV + RV
40% of total lung volume
Tidal volume
air in and out in a normal breath
10% of total lung volume
IRV
amount you can inhale above normal inhale
50% of total lung volume
ERV
amount you can exhale after normal exhale
15% of total lung volume
RV
amount left after end of max expiration
25% of total lung volume
TLC
FRC + IC (ERV + RV) + (TV + IRV)
or
RV + VC (RV) + (TV + IRV + ERV)
IC
The max volume that can be inspired after normal tidal exhalation
= TV + IRV
60% of total lung volume
Vital capacity
Volume change that occurs btw max inspiration and max expiration
TV + IRV + ERV
75% of total lung volume
Lung CA - worst to have
Small cell carcinoma
Early met and worst prognosis
Non small cell carinoma
Squamous cell - central - late met
Adenocarcinoma - periph - early met
Large cell - early met and grow fast
Metastatic lung CA more common than primary - Most common prim CA that met to lungs
Breast!!! GI F genital Kidneys Melanoma M genital
Restrictive lung diseases
Lungs can’t fully expand
Lung volumes are decreased
Work of breathing increased
Classic signs of restrictive lung disease
Dyspnea!!!
Dry non productive cough!!!
Weight loss/wasting!!!
Cor pulmonale (R VENTRICLE ENLARGEMENT) Tachypnea Hypoxemia Dec breath sounds Dec lung volumes Dec diffusion capacity
Bacterial vs. Viral pneumonia - cough
Bacterial - productive
Viral - non productive
Chronic aspiration - more common in which lobe
Right!
Because it is more vertical and has a larger diameter
BOOP
Bronchiolitis obliterans with organ pneumonia
Bronchioles and alveloi become inflames and plugged with CT
Pulmonary edema - ___ heart failure
LEFT
L is not pumping out to system so things get backed up and you end up with inc pressure in pulm system
Asthma - quick tx vs. long term (meds)
Quick = albuterol = beta adrenergic agent - SNS activation - BD
Long term = corticosteroid with beta 2 agonists
COPD tx (meds)
Bronchodilators (beta adrenergic agents, anticholinergics)
O2 therapy
BP contraindication to exercise
SBP over 180
DBP over 110
Drop in SBP of more than 20
Inspiration:Expiration ratio
1:2
COPD will be 1:4
Listening for diaphragm movememnt
Lung will be resonant
Diaphragm will be dull
Mediate percussion
Resonant, Dull, FLat, Tympanic
Resonant = lungs Dull = liver, diaphragm Flat = mm mass Tympanic = hollow organ like stomach
Norm diaphragmatic excursion
3 to 5 cm
DEC IN COPD
Chest wall excursion
Upper 2/8 norm, 1.5 to 2 with deep
Middle 3/8 norm, 2-3 with deep
Lower 4/8 norm, 3-4 with deep
Dyspnea
Count to 15 and see how many breaths takes them 0 = no dyspnea 1 = 1 breath 2 = 2 breaths 3 = 4+ breaths 4 = can't finish
DO NOT LET GET TO 3 (stop when 3 or greater)
Stages of cough
Air in - epiglottis closes - diaphragm cx - epiglottis open
Angina scale
0 = none 1 = light, barely noticeable 2 = mod, bothersome 3 = severe 4 = worst pain ever
DO NOT LET GET TO 2! (stop when 2 or greater)
EF norm and no tx
Norm 55-70%
NO TX if less than 20%
Pulmonary hypertension
Norms and no tx
Norm 12-18 mmHg
Htn will be above 20
NO TX if above 25