Lecture 5 (Meds Pulm)- Exam 2 Flashcards
What is the definition of Foregin body aspiration?
Definition: Introduction of solid matter into the airway at the level of the glottal opening, larynx, trachea, or bronchi. Potentially life-threatening event because it can block respiration.
Foreign-Body Aspiration
* Common cause of what?
* How many deaths?
* 5th mcc of what?
* Male or females?
* What are teh most common items?
- Common cause of mortality and morbidity in children, especially in those <2 yrs
- ~1 death per 100,000 children 0 to 4 years old
- 5th most common cause of unintentional-injury mortality in the US
- Slightly higher predominance with male children (58%)
- Most common items – jewelry, coins, food (nuts, seeds, hot dogs), toys, hardware, pins, pen caps, balloons
Foreign-Body Aspiration- clinical presentation
* What does it depend on?
* Most present when?
* What is the mc symptoms?
* What are other symptoms?
* What is the delayed presenation?
Foreign-Body Aspiration
* What is the most common foreign bodies (anatomical locations)? What are the sxs?
Bronchial foreign bodies are most common: coughing, wheezing & may present with decreased breath sounds (many are missed on initial presentation)
- Right main bronchus (~50%)
-Left main bronchus (~40%)
-Bilateral (~5%)
What foreign bodies is not common? What are the sxs?
Laryngotracheal foreign bodies not common: stridor, wheeze, dyspnea, sometimes hoarseness, life threatening (not difficult to diagnose)
* ~5%
up high; block whole airway
Foreign-Body Aspiration -Diagnosis
* What does the history + focused PE show?
* What imaging can be done?
* BUT if you have clinical suspicion is high, what can you do?
What does this show?
Foreign body aspiration-txt
* What do you need to protect?
* Remove what?
* What has a 95% success rate, good control of airway and visualization, minimal complications?
* What is only done by those with high levels of experience?
- Protect the airway (keep them calm)
- Remove object quickly but do NOT sweep mouth
- Rigid bronchoscopy(ER)= ~ 95% success rate, good control of the airway & visualization, minimal complications
- Flexible bronchoscopy only done by those w/ high levels of experience(OR)
FB aspiration: txt
* If patient cannot be ventilated after the everything, what needs to happen?
* What do you give if infectio from FB?
- If patient cannot be ventilated after the above – cricothyroidotomy may be life-saving
- Antibiotics and Steroids- only used if infection from FB-> Been there for days
Foreign-Body Aspiration
* What are the complications of FB retention?
* What must be obtained during bronchoscopy?
- Complications:Atelectasis, Bronchiectasis, Post-obstructive pneumonia
- Cultures obtained during bronchoscopy guide the initial antibiotic choice in treating infected areas
What are the complications of FB extractions?
Pneumothorax, Hemorrhage, Respiratory arrest (they occur rarely)
Foreign-Body Aspiration: Anticipatory Guidance
* Not preventable or preventable
* What is available and considered a point of standard of care in pediatric medicine?
* AAP advises what?
- Preventable
- Age specific educational guidance is available and considered a point of standard of care in pediatric medicine
- AAP advises educating parents starting at 6 month well visit and every visit after (or as soon as they roll)
Respiratory Distress Syndrome (Hyaline Membrane Disease):
* What is it?
Definition: A condition in newborn babies in which the lungs are deficient in surfactant, preventing their proper expansion and causing the formation of hyaline material in the lung spaces
Respiratory Distress Syndrome(Hyaline Membrane Disease)
* When does incidence increase? (Know the ages)
Incidence increases with decreasing gestational age
* 100% ≤26 wks GA
* 57% 27-32 wks GA
* 10-1% 33-36 wks GA
* <0.3% 37-40 wks GA
Respiratory Distress Syndrome(Hyaline Membrane Disease)
* What increases with gestational age?
* Some rare cases are what?
* What are the risk factors?
* Leading cause of what?
- Surfactant production and quality increase with GA
- Some rare cases are hereditary
- Risk factors: Prematurity, Male, Caucasian, Infants of diabetic mothers, Second-born of premature twins, Neonatal infection
- Leading cause of death in preterm infants
Respiratory Distress Syndrome(Hyaline Membrane Disease)
* What is the pathophysiology?
Respiratory Distress Syndrome
(Hyaline Membrane Disease): Clinical presentation
* Presents when?
* What happens with breathing?
* Skin?
* Decreased what?
- Presents within the first minutes to hours after birth
- Rapid, labored breathing
- Expiratory grunting
- Suprasternal and substernal retractions
- Nasal flaring
- Cyanosis, lethargy and irregular respirations are signs of worsening pulmonary function
- Decreased breath sounds, crackles, pale & may have diminished pulses, decreased urine output and peripheral edema
Respiratory Distress Syndrome
(Hyaline Membrane Disease): dx
* How can you tell clinical?
* What can you do before the baby is born?
* What do abgs show?
* What does the CXR show?
- Clinical- preterm infant (worse w/risk factors) with the onset of progressive respiratory failure
- Prenatally via tests on amniotic fluid (done if gestational age not known and delivery imminent)
- ABGs revealing hypoxemia and hypercapnia- improves with O2 (pulm issue but if PO2 is not better with O2 then cardiac)
- CXR= low lung volume, classic diffuse reticulogranular ground glass appearance with air bronchograms
baby born at 20 weeks old- what does this CXR show?
Respiratory Distress Syndrome
(Hyaline Membrane Disease)
* What is the txt?
- Treatment includes intratracheal surfactant therapy, supplemental O2 & mechanical ventilation as needed
- Survival rate >90% with treatment
Respiratory Distress Syndrome
(Hyaline Membrane Disease)
* What is the prevention?
Antenatal corticosteroid therapy administered to all pregnant women at 23 - 34 weeks gestation who are at increased risk of preterm delivery within the next 7 days → improved neonatal lung function by enhancing lung maturation and release of surfactant
What is the definition of cystic fibrosis (CF)
A hereditary disorder affecting the exocrine glands which causes the production of abnormally thick mucus, leading to the blockage of the pancreatic ducts, intestines, and bronchi and often resulting in respiratory infection.
Cystic Fibrosis
* The most common what? What is the mutation?
* What is the incidence?
* What is the medican predicted survival for CF in US?
* How many ppl are carriers?
- The most common life-shortening autosomal recessive disease among Caucasians (mutation on chromosome 7, CFTR gene)
- In US occurs ~ 1:3200 Caucasians, 1:10,000 Hispanics, 1:10,500 Native Americans, 1:15,000 African Americans, and 1:30,000 Asian Americans
- Median predicted survival for CF in US = >40 years old (males>females)
- ~ 1 in 31 Americans is a symptomless carrier of a defective CFgene
CF
* What gene is mutated?
more than 1,700 differentmutationsin the CFTR gene-> can have spin. mutation
What is the pathophysiology of CF?
Affects nearly all exocrine glands = abnormal transport of chloride and sodium across secretory epithelia →thickened, viscous secretions in the bronchi, biliary tract, pancreas, intestines, and reproductive system
CF: clinical presentation-pulmonary
* Begins when?
* Chronic what?
* Persistent what?
* Ultimately what happens?
* Chronic hypoxemia results in what?
What causes righ ventricular hypertropy in CF?
Chronic hypoxemia results in muscular hypertrophy of the pulmonary arteries, pulmonary hypertension and right ventricular hypertrophy
Clinical Presentation of CF: Bacterial Infections
* The lungs of most patients with CF are what?
* What are the most common organism in infants and children?
* What is the most common organism in ALL ages?
* What happens with MRSA?
* What is now present and that now causes rapid pulmonary deterioration?
Clinical Presentation of CF: GI
* What happens with pancreas?
* What happens in small intestine?
* What happens in billary?
CF is the third leading cause for what transplant?
liver transplantation in late childhood dt Biliary cirrhosis→ hepatobiliary disease
What are all the other clinical presentation findings for CF?
CF dx:
* What can you do for screening?
* What combo do you need?
What are the three ways that show Evidence of cystic fibrosis transmembrane conductance regulator (CFTR) dysfxn?
- Elevated sweat chloride ≥60 mmol/L
- Presence of two disease-causing variants inCFTR, one from each parental allele
- Abnormal nasal potential difference
What is the primary test for dx of CF? What are the result levels?
* When can you preform the text/
* How is it stimulated? (what meds)
CF management:
* What do you need to monitor patients with?
* Whhat are the findings to the monitoring?
* What may also be useful to monitor extent of disease?
Explain this when the genetic testing come back positve for CFTR mutation on chromsome 7
Cystic Fibrosis- Managment
Pulmonary Function tests:
* Best indication of what?
* What age groups do you need to modify this?
* What are the expected results?
Cystic Fibrosis management
* What can be given?
* What are the airway clearance therapies?
* What is the preventation?
* Bronchodialators?
* What are the anti-inflam therapies?
* How do you prevent actute exacerbations?
Cystic Fibrosis- managment:
* What do you give for constipation?
* What do you do for the pancreatic?
* What do yoy need to monitor?
* What vitamins are needed?
* What are the blood tests needed?
Cystic Fibrosis- Management
* Requires what?
* Experience who?
* What do families and patients often need what?
* What needs ot be discussed?
- Requires multi-disciplinary support
- Experienced physician, dietician, physical therapist, respiratory therapist, pharmacist and social worker
- Families & patients often need support groups and counseling
- Advance care directives & lung transplant evaluations need discussion
Cystic Fibrosis- Prognosis
* Determined by what?
* What is inevitable?
* What has extended life expectancy?
* What is the life expectancy?
* What is recommended for planning pregnancy?
What is croup (Laryngotracheobronchitis)
Definition: inflammation of the larynx and trachea in children, associated with infection and causing breathing difficulties.
What is the viral form of croup? (What ages, caused by what, sx)
classic croup; occurs commonly in children 6 months - 3 yrs old
* caused by respiratory viruses
* viral symptoms (eg, nasal congestion, fever) are usually present
What is the spasmodic form of croup? (What ages, what is common, sx)
Spasmodic croup—occurs in children 6 months - 3 yrs old
* always occurs at night, fever is typically absent
* recurrent nature, “frequently recurrent croup”
* familial predisposition may be more common in children with a family history of allergies
Croup-viral:
* Most common in who? Uncommon in who?
* What is the male to femal ratio?
* What is the most common pathogen? Most common when? What are also pathogens?
* Most frequent time of occurance?
Mc pathogen for viral croup?
parainfluenza
What is the pathophysiology of croup-viral?
infection → inflammation of larynx, trachea, bronchi, bronchioles and lung parenchyma resulting in swelling and exudate, anatomic hallmark is narrowing of the subglottic airway
Croup-Viral: clinical presentation:
* What type of cough?
* Aggravated by what?
* Typcially begins as what?
* No fever or fever?
* What type of voice?
* Breathing may be what? What can result?
* Inspiratory what?