patho final Flashcards
atrophy
decreased workload
decreased cell size
hyperplasia
increased number of cells
hypertrophy
increased workload
increased cell size
benign
- usually harmless
- almost always encapsulated
- prevents the release of cells, restricting the spread
- problems are related to compression
malignant
- rapid, uncontrolled and disorganized growth
- metastasis
- starve normal cells
hypersensitivty reactions
- inappropriate response to antigen
- occurs immediately or within minutes to hours
- classified by pathogenesis
type 1 hypersensitivty
immediate reaction
- had to have been previously exposed (sensitization)
1st exposure: IgE: antibodies are made and attach to mast cells through the body
2nd exposure: antigen causes IgE to trigger T cells and histamine
type 11 hypersensitivity
cytotoxic and cytolytic reaction
- igG and igM antibodies bind with antigen on cell surface
- cell destruction occurs
- resulting in: Lysis, phagocytosis
type 3 hypersensitivity
- immune complex reactions: antigen-antibody complexes
- ineffectively removed by phagocytosis
- autoimmune diseases
- sites: kidneys, skin, joints, blood vessels. and lungs
type 4 hypersensitivity
- cell-mediated or delayed hypersensitivity reactions. mediated by t cells as opposed to antibodies
- occurs in two phases
- sensitization phase
- effector phase
neutropenia
- decrease neutrophil- leads to more infections
- normal: 2,000-7,500 cells/ml
- causes: increase use infection, decrease production
thrombocytopenia
low platelets
anemia
- decrease in rbc
- decrease in hemoglobin content
- abnormal Hgb
results from:
- impaired production
- increased destructing
- blood loss
leading to
- decreased oxygen-carrying capacity
anemia cm
- weakness
- fatigue
- pallor
- syncope
- dyspenea
- tachycardia
iron deficiency anemia
- low iron
- decrease hgb production
- decrease absorption (upper gi tract)
- increase bleeding (menstruation)
prevalence
- women of childbearing age
- children under 2
- elderly
diagnosis
- cbc
- ferritin
- iron
pernicious anemia
- b12 deficency or megaloblastic anemia
- decrease cyancobalmin b12
- lack on intristic factor
- acquired: portion of stomach/intestines
autoimmune
- destruction of pareital cells
- results in immature rbcs
diagnosis
- cbc
- vitamin b12
aplastic anemia
- destruction of bone marrow
- resulting from variety of factors
autoimmune conditions
- medications
- viruses
- toxins
- genetic abnormalities
- pancytopenia: low rbc, wbcs, plts
- increase clinical manifestations
diagnosis
- cbc
- bone marrow biopsy
hemolytic anemia
- destruction (hemolysis of rbc
multiple types
- sickle anemia
- thalassemia- rare
- erthryoblastosis- children
sickle cell anemia
- inherited autosomal recessive
- hgb becomes sensitive to changes in 02
- changes from disk shape to crescent shape
- not able to flow through vessels leading to clumping
- only live for 20 days instead of 120 days
signs and symptoms of sickle cell anemia
- severe pain and swelling
- abdominal pain
- tachypnea
- dilute urine and blood in the urine
sickle cell diagnosis
- sickledex test
- hemoglobin electrophoresis
neutropenia diagnosis and treatment
- complete blood count
- bone marrow biopsy
treatment
- causative in nature: need to know underlying cause treatment
neutropenia
- decrease neutrophil- leads to more infections
- normal: 2,000-7,500 cells/ml
- causes: increase use infection, decrease production
clinical manifestations of neutropenia
fever
chills
fatigue
regurgitation
- valve does not close completely
- blood flow backs up
stenosis
- narrowed, valve does not open completely
- forward blood flow hindered
- decreases cardiac output
right- sided heart failure
- left-sided heart failure major cause must continually pump blood against increased fluid in the pulmonary artery and lungs
- cor pulmonale: right ventricle hypertrophies and fails due to increased pulmonary pressures
- a backward buildup of blood systematic blood vessels
- peripheral edema results
- backs into body= edema, jugular vein distension
- body can attain a liter of fluid before showing signs: weigh pt.
left- sided heart failure
- afterload: force generated by left ventricle to eject blood to the aorta through aortic valve
- peripheral vascular resistance: pressure within aorta/arteries
- pvr influences afterload
- hypertension major cause
- blood backs up from left ventricle into lungs into pulmonary circulation= flooded capillaries
- avelora edema
atherosclerosis
thickening/ hardening of arterial walls from plaque formation
- may begin in childhood
coronary artery disease (CAD)
obstruction of blood flow through coronary arteries typically caused by atherosclerosis
can cause:
- angina
- myocardial infarction
- sudden death
myocardial infarction
death of heart muscle
types
- non-st segment elevation myocardial infarction (NSTEMI)
- st segment elevation myocardial infarction (STEMI)
etiology
- atherosclerosis: narrowing of coronary arteries
- thrombus: embolism
- vasospasm: constriction
hypertension
persistently high blood pressure
- systolic BP > 130 mmhg
- diastolic bp > 80 mmhg
- average of two or more readings on different dates: two weeks apart
patho of mi
- coronary artery blockage
- decreased cardiac blood supply
signs and symptoms of mi
- crushing viselike pain arm, shoulder, neck, jaw, back
- shortness of breath
- restlessness
- dizziness, fainting
- nauesea
- sweating
atypical signs of MI
- abscne of classic pain
- dyspena
- fatigue
- anxiety
- impending doom
- chest cramps
- abdominal pain
- indigestion
- restlessness
- falling
prehospital MI
“time is muscle”
- asprin
- call 911 of 5 min of chest pain
- do not drive
hospital MI
Morphine
Oxygen
Nitroglycerin
Aspirin
CAD prevention
- non-modifiable risk factors: age and family
modify risk factors
- tabacco use
- obesity
- inactivity
- stress
- dm
- hld
- htn
patho of atherosclerosis
- injury to artery–> inflammation–> accumulation of lipids, platelets and clotting factors
- scar tissue replaces normal endothelial lining
- plaque leads to narrowing (stenosis)
non-modifiable risk factors of ac
- age: 50+
- gender: male
- ethnicity: African Americans
- genetics
modifiable risk factors of ca
diabetes hypertension smoking obesity sedentary lifestyle increased serum homocysteine increased serum iron levels infection depression hyperlipidemia excessive alcohol intake stress
hypertension
persistently high blood pressure
- systolic BP > 130 mmhg
- diastolic bp > 80 mmhg
- average of two or more readings on different dates: two weeks apart
etiology of hypertension
unkown
two types:
- primary- essential hypertension which is a chronic elevation of bp from an unknown cause
- secondary known cause - acute stress - excessive alcohol intake - sickle cell disease - renal disorders - endocrine disorders - neurologic
risk of hypertension
non modifiable
- age
- gender
- ethnicity
- family history
modifiable
- alcohol
- cigarette smoking
- diabetes
- obesity
- stress
- elevated serum lipids
- excess dietary sodim
- decreased kidney function
signs/ symptoms of HTN
silent killer
rare:
- headache
- dizziness
- blurred vision
- angina
- fatigue
- dyspena
hypertensive urgency
- sever bp elevation without target organ dysfunction progression
- relatively asymptomatic
- oral medication
hypertensive emergency
- sbp> 180 mm hg systolic
- dbp > 120 mm hg systolic
- risk for progression for target organ dysfunction
- immediate gradual reduction of bp to protect target organs
what is pneumonia
- an infection that inflamed the lungs and impairs gas exchange
- air sacs fill with fluid causing cough and difficulty breathing
patho of pneumonia
development occurs when a pathogen reaches the alveoli and host defesnes are overwhelmed by microorganisms or by the inoculum size
pneumonia diagnosis symtoms
- ineffective airway clearance
- impaired gas exchange
- ineffective breathing pattern
- risk for infection
- acute pain
pneumonia etiology
- infectious agents
A: bacteria and viruses that are usually inhaled
- infection gets into lungs causing inflammation
- steptococcus pneumoniaw is responsible for most cases of pneumonia
B: fungi
2. injurious agents A: aspiration - gastric contents B: endotracheal intubation C: smoke - inhalation of smoke or chemicals
clinical manifestations pneumonia
- hypoxemia
- cough
- fever
- rapid and shallow breathing
- loss of appetite
- abnormal lung sounds
- fatigue
- chest pain
- dehydration
- clammy skin
- difficult or labored breathing
pt. teaching pneumonia
- what exactly pneumonia is
- different stages of pnemonia
- when/how to take medications
- what the medications are used for
pneumonia prevention
- many different pneumonia vaccines
- flu vaccines
- quit smoking
- wash hands often
- maintain healthy lifestyles
medications/treatment pneumonia
- macrolide medications
- oral antibiotics
- antiviral medications
- over the counter meds
- hospitalization
- oxygen therapy
asthma clinical manifestations
- Shortness of breath.
- Chest tightness or pain.
- Wheezing when exhaling, which is also a common sign of asthma in kids.
- Trouble sleeping caused by shortness of breath, coughing or wheezing.
- Coughing or wheezing attacks that are worsened by a respiratory virus, such as a cold or
the flu. - being too breathless to eat, speak or sleep.
- breathing faster.
- a fast heartbeat.
- drowsiness, confusion, exhaustion or dizziness.
- blue lips or fingers.
- fainting.
patho of asthma
- inflammed airways react to environmental triggers such as smoke, dust, pollen
- airway epithelial cells, which are the first line of defense against inhaled pathogens are partiles, initiate airway inflammation and produce muscous
- leads to coughing and breathign dificulties
- airway narrows
- result of immune response in the bronchial airways
- in response bronchi contract into spasm
genetic predisposition of asthma
- more than 100 genes associated with allergic asthma
- offspirng of asthmatic parents
- ORMDL3 gene associated with childhood onset
- HLA-DQ gene was related to later onset asthma
treatment of asthma
- symptoms controlled
- inhaled and systemic corticosteroids: supress airway inflammation
- bronchiodilators
- leukitriene
- mast cell stabilizer
- anticholinergics
diagnosis of asthma
- lung function test
- chest or sinus x ray
pt teaching of asthma
- properly teach pt. how to use inhaler
- take asthma medication directly as your provider tells u
- be sure to always have a quick- relief inhaler
- watch for early changes of symptoms getting worse by using a peak flow meter
- use dust proof covers
- dont smoke
- try to keep window closed during pollen seasons
COPD risk factors
- exposure to tobacco smoke
- exposure to dust and chemicals
- exposure to fumes from burning fuel
- people with ashma
- genetics
COPD treatment
- bronchodilators
- steroids
diagonsis of COPD
- pulmonary function test
- spirometry
- chest x-rays and ct scans
patho of COPD
- combined process of narrowing airways- limitd airflow and causes loss and destruction of aveloi, bronchioles, and surrounding capillary vessels
- lung capacity further decreases
- reduced airflow
- dyspnea
- hypercapina
etiology of COPD
smoking and people exposed to fumes, like carbon monoxide or chemicals
- alpha-1 antitrypsin genetic link to copd
two causes:
- emphysema
- chronic bronchitis
prevention of copd
- no prevention
- getting flu vac
- quit smoking
clinical manifestations of copd
- shortness of breath
- wheezing
- chest tightness
- lack of energy
- weight loss
- chronic cough
- edema
- anorexia
pleural effusion
accumulation of excess fluid in the plerual space or pleura (membranous linning of the lungs and chest cavity)
normal fluid in lungs
- 10-20ml of fluid
- lubricates lungs
- decreases friction
patho of pleural effusion
- excessive fluid in small space
- compresses lungs
- limits expansion during inhalation
- can affect one or both lungs
- various types of fluid can accumulate in a variety of locations
what can accumulate in pleural effusion
- exudative: protein- rich fluid
- transudative: watery
- hemothorax: blood
- pneumothorax: air
- empyema: pus
etiology pleural effusion
- heart failure
- pulmonary embolism
- cirrhosis
- pneuminia
- kidney disease
- cancer
- bleeding
diagnosis pleural effusion
xray
ct scan
ultrasound
clinical mafiestations pleural effusion
- dyspnea
- pleuritic chest pain
- tachypnea
- tracheal deviation
- pleural friction rub
- tachycardia
- dminished/absent lung sounds
pleural effusion treatments
- depends on s/s
- some resolve w/o tx
- correct underlying cause
- remove excess fluid: thoracentesis, chest tube
- antibiotics
atelectasis
incomplete alveolar expansion or collapse of the alveoli
normal for alveolo
- alveoli expand
- has exchange
- o2 is brought in during inhalation
- co2 is expelled during exhalation
patho of atelectasis
- walls of alveoli stick together
- prevents adequate gas exchange
etiology atelectasis
- surfactanr deficiency- prevents aveloi from sticking together
- bronchus obstruction
- compression of lung tissue
- lung fibrosis
risk factors atelectasis
- surgery
- inmmobility
clinical manifestations atelectasis
- tachypnea
- decrease breath sounds
- dyspnea
- anxiety
- restlessness
- tachycardia
- asymmestrical chest expansion
prevention of atelectasis
- increase mobility
- breathing exercises
- cough and deep breaths
- inventive spirometry
- pain management
treatment of atelectasis
- antibiotics
- thoracentesis
- incentive spirometry
- bronchodilator
hypervolemia
excess fluid in the intravascular space
water intoxication
excess fluid in the intracellular space
causes for excess fluid
excessive sodium or water intake
- high sodium diet
- psychogenic polydipsia
- hypertonic fluid administration
- free water
- enteral feedings
inadequate sodium or water elimination
- system/ organ failure (renal, liver, heart)
- endocrine disorders (hyperaldosteronism, crushing syndrome, syndrome of inappropriate antidiuretic hormone
clinical manifestations for excess fluid
- edema( peripheral, perorbital, cerebral)
- dyspnea
- bounding pulse
- tachycardia
- jvd
- htn
- polyuria
- weight gain
- crackles
diagnosis for excess fluid
- H&P
- daily weights
- I&O
- labtest (CBC, chemistry)
- urinary analysis
treatment for excess fluid
- compression socks
- diuretics
- restricting NA
- fluid restriction
- hypertonic solutions
Fluid imbalance- deficit
- dehydration
- hypovolemia or fluid volume deficit
- decreased fluid in the intracellular space
- can occur independently without electrolyte defects
fluid imbalance deficit reasoning
inadequate fluid intake
- poor oral intake
- inadequate iv fluid replacement
excessive fluid or sodium losses
- gastrointestinal losses
- excessive diaphoresis
- prolonged hyperventilation
- hemorrhage
- nephrosis
- diabetes mellitus
- diabetes insipidus
- burns
- open wounds
- ascites
- effusions
- excessive use of diuretics
- osmotic diuresis
fluid imbalance deficit clinical manifestations
- thirst
- altered LOC
- hypotension
- tachycardia
- weak/thready pulse
- dry mucous membranes
- tenting skin turgor
- oliguria
- weight loss
- sunken fontanelles
fluid imbalance deficit diagnosis
- h&p
- daily weights
- I&Os
- lab test (cbc & chemistry)
- U/A
deficit treatment
- identifying/ managing underlying cause
- replacement fluids
hyponatremia
sodium < 135 mEq/l
- serium osmolarity decreases
hyponatremia causes
deficient sodium
- too much: diuretics, Gi loss (V/d), diaphoresis
- not enough in: Na restricting
excessive water
- too much in: hypotonic solutions, oral hydration
- not enough out: renal failure, heart failure, SIADH
hyponatremia clinical maifestations
- GI upset
- lethargy
- confusion
- decrease deep tendon reflexes
- muscle weakness
- seizures
- coma