Exam 2 Flashcards
with HTN which organs are we most concerned about effects?
brain
heart
kidneys
describe the patho of HTN
vessel remodeling –> arterioles thicken –> blood flow can’t get to organs –> tissues damaged due to lack of O2
what is the most common type of HTN? and what’s the definition?
primary / essential
not caused by existing health problem
modifiable risk factors for HTN
diet, exercise, weight, substance use, stress
non modifiable risk factors for HTN
age, genetics, family hx
what is most common cause of secondary HTN?
kidney disease
what BP measurement indicates malignant hypertensive crisis?
> 200/130-150
!!!
symptoms of hypertensive crisis
HA, blurred vision, uremia, dyspnea, nose bleed
what can happen if hypertensive crisis is not treated?
stroke
kidney failure
heart failure
(the 3 organs we’re mostly concerned with HTN affecting)
priority interventions for hypertensive crisis (3)
- cardiac monitor (12 lead)
- IV access
- administer IV antihypertensives (to SLOWLY reduce BP)
re: JNC8, what should BP be for adults > or = 60
less than 150/90
re: JNC8, what should BP be for adults 30-59?
less than 140/90
re: JNC8, what should BP be for adults 18+ w/CKD or DM?
less than 140/90
re: JNC8, what should BP be for adults 19-29?
based on expert / provider opinion
why is JNC8 scale for BP considered more holistic?
takes a person’s age into account + existing conditions
what about HTN makes “buy in” challenging for tx, meds, lifestyle changes?
usually no symptoms
silent killer
what is priority intervention for pt with HTN?
plan of care adherence –> following drug therapy + lifestyle changes
what’s the overall broad goal of HTN interventions?
lifestyle changes
low sodium, exercise, nutrient dense foods, quit smoking + drinking
what are the parameters for diagnosing orthostatic hypotension?
drop in systolic: 20
OR
drop in diastolic: 10
WITH increase HR: 10%-20%
1. A patient is prescribed a new medication for the treatment of hypertension. While supine, the patient’s blood pressure is 112/70 mmHg and the heart rate is 80 beats/minute. The healthcare provider assesses the patient when the patient changes to a sitting position. Which of the following indicates the patient is experiencing orthostatic hypotension? A) BP 88/62, HR 100 B) BP 98/60, HR 68 C)BP 100/66, HR 90 D)BP 120/84, HR 82
A
systolic drop: 20+ OR diastolic drop: 10+ WITH HR increase of 10-20%
what is angina defined as?
O2 supply not meeting demand –> ischemia –> prolonged leads to cell death
+ anaerobic metabolism –> lactic acid buildup = pain
person admitted to hospital for 1st time chest pain - would you label this stable or unstable angina? why?
CANNOT be called stable; no baseline to compare it to; need further assessment
what is stable angina? when does this cause pain?
stable plaque not moving that’s blocking blood flow - limited amt of blood can get to heart
pain with activity
what type of angina is relieved with nitroglycerin + rest?
chronic stable
when should pt call 911 with chest pain? (4 scenarios)
- when pain isn’t within normal pattern
- NGL isn’t helping
- rest isn’t heping
- pain lasting >15 mins
= this is considered unstable at this point
per Messer: call 911 based on provider’s recommendation for this pt
does chronic stable angina cause permanent damage to heart?
nope - as long as they’re managing it :)
which type of angina causes pain at rest or with exertion (no pattern)?
unstable angina
pt presents to ED with unstable angina. what are your priority interventions? (3)
- 12 lead
- VS
- pain assessment
what is HF?
pump failure + heart cannot work effectively (cannot meet O2 demands of body)
why would anemia be a risk factor for HF?
this person has low RBCs, which means they have a low O2 carrying capacity –> causes heart to work harder
what is most common cause of LEFT sided HF? why?
HTN
Left ventricle must overcome increased vascular resistance + has to constantly work harder –> leads to hypertrophy of LV –> HF
systolic LEFT sided HF is defined as….
left ventricle PUMP failure
systolic LEFT sided HF most commonly caused by what?
HTN
what is normal EF? (amt of blood pushed out of L ventricle)
50-70%
with systolic left sided HF, what would EF be?
<40%
diastolic LEFT sided HF is defined as….
left ventricle doesn’t relax during diastole + can’t fill with as much blood
most common cause of diastolic left sided HF?
aging
what would you see re: EF with diastolic left sided HF?
“preserved EF” - misleading because it can look normal but really, the heart hasn’t filled with as much blood as normal
what 2 things are happening with LEFT sided HF? (broad)
- tissues not getting enough O2 (perfusion)
2. blood backing up into lungs (oxygenation)
what measurement is a great indicator of cardiac output?
urinary output
kidneys take the hit first if CO is decreased. if they’re not being perfused, body isn’t producing urine
s+s of left sided HF
- dyspnea
- breathlessness
- pulmonary congestion
- oliguria
- confusion
- weakness
- fatigue
= perfusion + oxygenation problems
RIGHT sided HF most commonly caused by what?
left sided HF (LHF increases pulmonary pressure + causes R ventricle to work harder / hypertrophy –> eventually fail
s+s of RIGHT sided HF
- edema
- weight gain
- JVD
what is the most reliable indicator of HF?
a patient’s weight
weight gain in HF that would warrant a call to the provider
1-2 lbs/day
or
3lbs/week
what’s the best way to diagnose HF?
ECG (EF)
EF normal is 50-70%; anything below could be indicative of HF; aside from diastolic left sided as this EF can appear normal)
BNP is also helpful but not best choice
what is BNP? and what’s normal level?
hormone secreted by heart overstretching
<100
what electrolyte imbalance could we see with HF?
hyponatremia (dilutional r/t FVO)
knowing the manifestations of HF, what are the overall broad goals for interventions?
improve cardiac output + improve gas exchange
w/HF patients, what interventions can we use to improve gas exchange? (3)
- elevate HOB (high fowlers)
- O2 therapy (>90%)
- ventilation assistance
what intervention is strongly indicated for acute episodes of HF? why?
ventilation assistance: this increases pressure in thoracic cavity so less blood can come into heart + it opens alveoli
(ex: CPAP, BiPAP)
mnemonic for treating left sided HF
hint: non pharm and pharm
UNLOAD FAST
upright, nitrates, lasix, O2, ACE, dig
fluids (dec), afterload (dec), sodium (dec), test
what are the fluid and sodium restrictions for HF patients?
KNOW THIS
fluid: 2L/day
sodium: 2-3g/day
HF pt presents to ED with rapid onset of dyspnea, crackles in lungs, pink/frothy sputum and complaints of feeling anxious. what are you primary interventions?
- high fowlers
2. O2 therapy
what is the best way we can educate pts to monitor for disease progression of HF?
rapid weight gain
anemia is defined as what? (broad)
not enough RBCs to carry adequate O2 to tissues
2 ways to diagnosis anemia
- reticulocyte count: # of “baby” RBCs (0.5-2%)
2. mean corpuscle volume (MCV): size of RBC (80-95)
low number of reticulocytes =
production problem
high number of reticulocytes =
destruction problem (hemolytic)
what is normal MCV?
80-95
3 different types of anemia r/t decreased RBC production
- normocytic
- microcytic
- macrocytic
macrocytic anemia is an issue with what?
DNA synthesis (B12 or folic acid deficiency anemia)
microcyctic anemia is an issue with what?
hemoglobin issue (iron deficiency anemia)
risk factors for anemia
- blood loss
- malabsorption
- GI bleed
- age
- immune issue (SCD)
- bone marrow suppression
s+s of anemia
- pallor
- jaundice (RBCs breaking down - only with hemolytic)
- fatigue
- dysrhythmias
- dizziness
- angina
what is the most common anemia?
iron deficiency
what is normal reticulocyte?
0.5-2%
mouth fissures are associated with which type of anemia?
iron deficiency anemia
interventions (3) for iron deficiency anemia
- diet changes
- supplements
- IV iron infusion
what are the macrocytic anemias?
B12 + folic acid deficiency anemias
common cause of folic acid deficiency
ETOH use
common cause of B12 deficiency anemia
pernicious anemia: lacking intrinsic factor to absorb B12
name the unique symptom of macrocytic anemias
name unique symptom of specifically B12 deficiency anemia
macrocytic: glossitis
B12 deficiency: paresthesia
what happens with the hemoglobin in Sickle Cell Disease?
the normal HgbA undergoes a mutation on one beta chain –> HgbS
this mutated Hgb is sensitive to low O2 environments + loses its structure
with SCD, what happens to the mutated Hgb in low O2 environments?
loses its structure –> sickles –> clumps together –> creates occlusion in vascular system –> exacerbates low O2 environment –> more RBCs sickle
vicious cycle