Cardiac YOU GOT THIS! Flashcards
permanent ventricular pacemaker
pts with permanent pacemaker should be assessed for both electrical capture and mechanical capture best method for mechanical capture is either auscultation of apical or palpation of femoral… assess for pulse deficit
atrial pacing
pacer spikes precede P waves
ventricular pacing
pacer spikes precede QRS complexes
IV potassium
NEVER ADMINISTERED BY GRAVITY D/T risk for lethal arrhythmias if administered too quickly
triple-lumen peripherally inserted central catheter
indicated for administration of noxious meds (parenteral nutrition, chemotherapy), long-term IV therapy or in clients with poor venous access
- dresing change every 48 HOURS with a gauze dress or 7 days with a transparent semipermeable dressing (biopatch) or immediately if dressing is loose/torn, soiled or damp
- all infusing meds (EXCEPT VASOPRESSORS) must be paused before drawing blood
- scrub hub 10-15 seconds
- dressings that no longer occlude the insertion site must be changed immediately, loose corners reinforced by tape
Thoracic aortic aneurysm
can put pressure on the esophagus and cause dysphagia this may indicate aneurysm has increased in size
atropine uses
“death rattle” noisy rattling with breathing in dying client, can help manage airway secretions
decreased cardiac output
decreased perfusion to the body decreased LOC wet lung sounds SOB cold and clammy decr UOP weak peripheral pulses
widened QRS wave
often seen in PVCs, electrolyte imbalances and drug toxicity
treatment for sinus brady
correct underlying cause
may be d/t CCB, beta blockers, amiodarone
vagal stim
lower metabolic needs
causes of sinus tachy
stress some meds like epi, illicit drugs, stimulants heart failure cardiac tamponade hyperthyroidism
causes and treatment of v-tach
causes myocardial ischemia/infarction electrolyte imbalances digoxin toxicity stimulats
treatment:
stable w a pulse: o2, antidysrhythmias (amiodarone), synchronized cardioversion
unstable without a pulse: cpr, possible intubation, drug therapy (epinephrine, vasopressin, amiodarone)
causes and treatment for vfib
causes
cardiac injury, medication toxicity, electrolyte imbalances, untreated ventricular tachy
treatment
CPR, o2, defib, possible intubation, drug therapy (vasoconstrictors like epi, antiarrhythmic like amoidaraon, lidocaine and then possibly magnesium)
a fib causes and treatment
causes
open heart surgery, heart failure, copd, htn, ischemic heart disease
tx of stable pt: o2, drug therapy (neta blockers, ccb, digoxin, amiodarone, anticoagulant therapy)
tx of unstable pt: o2, cardioversion
QRS depolarization
ventricular
p wave
atrial
p waves in the form of a saw tooth wave
atrial flutter
chaotic p wave patterns
a-fib
chaotic QRS complexes
v-fib
bizarre QRS complexes
v-tach
periodic wide bizarre QRS complexes
PVCs
PVCs
typically low priority moderate priority when: 6 or more PVCs in a minute more than 6 PVCs in a row R on T phenomenon (PVC falls on a T wave)
**PVCs after MI is common, low priority
lethal arrhythmias
HIGH PRIORITY
- asystole
- v-fib
- both either low or no CO… little to no brain perfusion –> confusion and death
potentially lethal cardiac arrhythmia
v-tach
HAS CO! means they have a pulse
treatment of PVCs and v-tach
ventricular - lidocaine
amiodarone
supraventricular arrhythmias
atrial arrhythmias treat w ABCDs adenocard (adenosine) - fast IV push (push in less than 8 seconds and 20 ml NS flush right after... go into asystole for 30 seconds) Beta-blockers CCBs Digitalis (digoxin), Lanoxin
side effects of beta blockers and CCB
HEADACHE
HYPOTENSION
Treatment for asystole
epinephrine and atropine
normal CO
4-8 L/min
normal CVP
2-8 mmHg
electrical conduction of the heart
SA NODE AV NODE BUNDLE OF HIS BUNDLE BRANCES PURKINJE FIBERS
S4 sounds indicate
late diastole and high atrial pressure
- forcing blood into a stiff ventricle
PVCs causes
early premature conduction of QRS complex causes: HF MI Drug toxicity caffeine, tobacco, alc stress or pain incr workload on heart (exercise, fever, hypervolemia, HF, tachy)
tx of PVCS
tx based on underlying cause
- o2
- decr caffeine intake
- correct electrolyte imbalance
- discontinue/adjust drug causing toxicity
- decr stress or pain
chest pain w pvcs
NOTIFY HCP
Causes of asystole
MI HF electrolyte imbalances severe acidosis cardiac tamponade cocaine OD
tx for asystole
HIGH QUALITY CPR, rate 100-120, depth 2-2.4 in
atrial flutter causes
cad htn hf valvular disease hyperthyrodism chronic lung disease pulmonary embolism cardiomyopathy
tx of atrial flutter
drug therapy:
CCB
antiarrhythmics
anticoagulants ** risk for clots w atrial flutter d/t blood pooling**
unstable pt: CARDIOVERSION, synchronized shock
Left sided HF
DROWNING
pulmonary symptoms!!!! Dyspnea rales (crackles) orthopnea weakness/fatigue noctural paroxysmal dyspnea incr hr, uop, s3 gallop nagging cough (frothy, blood tinged sputum) gaining weight (2-3 lb a day)
right sided HF
SWELLING
venous symptoms!!! swelling of legs/hands weight gain edema - pitting large neck veins (JVD) lethargy/fatigue irregular HR nocturia girth (ascites)
** also hepatomegaly, splenomegaly, anorexia
diagnosis HF
bnp
chest x-ray
echocardiogram (looks at EF, back flow, valve problems)
CAD s/s
ischemia –> angina pectoris (chest pain w activity, SOB, fatigued)
CAD diagnosis and tx
diagnosis
- blood test and lipoprotein profile
- ECG - assess for changes in ST segments or T waves
tx
- diet, exercise, stress modifications
- coronary stent/angioplasty
- CABG
- *exercise goal: moderate=75 mins, vigorous = 150 mins**
PVD tx
- deoxygenated blood can’t get back up to the heart, pooling in extremities
- venous stasis ulcers
- elevate legs
MEDS: aspirin, clopidogrel, statins
SURGERY: angioplasty, CABG, endarterectomy
**USE DOPPLER OR ABI TO DX
PAD tx
narrow artery where o2 blood can’t get to the distal extremities
- ischemia and necrosis of extremities
- sharp pain gets worse at night = rest pain
- intermittent claudication
- gangrene
- DANGLE ARTERIES
TX
- daily skin care w moisturizer
- stop smoking
- avoid tight clothing
- NO HEATING PADS
- VASODILATORS, ANTIPLATELETS
angina pectoris drug therapy
nitrates
ccb
bb
antiplatelet/anticoag
nitrates
vasodilators
decrease ischemia, decr pain
usually sublingual
s/s of MI in women
fatigue
shoulder blade discomfort
SOB
TX of MI IMMEDIATE
MONA!
morphine
o2
nitro
aspirin
troponin level after mi
> 0.4
can remain elevated for as long as 3 weeks
Cardiac tamponade
Life threatening
Muffled or distant heart tones
Hypotension
JVD