upper airway urgencies and emergencies · 4 year old boy with a 2 day history of ... – iv...
TRANSCRIPT
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Upper Airway Emergencies
Selena Hariharan, M.D. Assistant Professor of Pediatrics Division of Pediatric Emergency Medicine Cincinnati Children’s Hospital Medical Center
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CASE # 1
A 9 year old boy, previously healthy, was sent home from school with a fever
Also complaining of neck pain, headache, abdominal pain
Physical exam: temperature of 102F, red throat, palatal petechiae, and cervical lymphadenopathy
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PHARYNGITIS Most commonly
due to viruses: – Adenovirus – Influenza – Enterovirus – Epstein-Barr
virus
Bacterial causes less likely: – Groups A, C, and
G Streptococcus – Corynebacterium
diptheriae – Neisseria
gonorrhea (esp. in adolescents)
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GROUP A STREPTOCOCCUS Humans are reservoir Carried in naso- and oropharynx Spread by direct contact More prevalent in winter / early spring Causes hemolysis of blood agar
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CLINICAL PRESENTATION
Abrupt onset of fever and sore throat Cervical lymphadenopathy Tonsillar exudate Palatal petechiae Scarlatiniform rash Associated with nausea, vomiting,
abdominal pain, and headache
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DIAGNOSIS
Gold standard for diagnosis is culture Rapid tests improving in quality Detect antigen by latex agglutination
or immunoassay
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TREATMENT
Treated to prevent acute rheumatic fever
Penicillin and Amoxicillin are first line; can use IM or PO
If allergic to Penicillin, can use macrolides or cephalosporins
5 day regimens currently being evaluated (Cefpodoxime and Azithromycin)
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INFECTIOUS MONONUCLEOSIS Common cause of pharyngitis
(confused with Strep pharyngitis) Presents with abrupt onset sore throat
and generalized lymphadenopathy after a few days of fever and malaise
Pharyngitis often exudative Associated with splenomegaly (50%),
hepatomegaly (15%), and rash (5%)
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DIAGNOSIS
CBC showing absolute and relative lymphocytosis with 10 or greater percent atypical morphology
Monospot: heterophil antibodies that agglutinate sheep erythrocytes -positive in up to 90% of adolescents within 3 weeks of illness -often negative in children, especially < 4 years old
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TREATMENT
Symptomatic care Must avoid vigorous activity for 1
month due to risk of splenic rupture Steroids controversial
-airway compromise -severe thrombocytopenia -hemolytic anemia
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CASE # 2
6 year old boy with a 2 day history of sore throat
Awoke with fever, headache, stiff neck, dysphagia, and a muffled voice
Physical exam: temperature 103F, pain on opening mouth, copious saliva, enlarged left tonsil, uvula deviated to right, cervical adenopathy
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PERITONSILLAR ABSCESS
Often polymicrobial – Upper respiratory aerobes and anaerobes – Group A Strep – Staphylococcus aureus
Many causative microbes produce beta-lactamase
Abscess of peritonsillar space from acute tonsillitis vs infection of Weber’s glands
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CLINICAL PRESENTATION
2- 4 day history of sore throat Dysphagia leading to drooling Fever “Hot potato” voice Trismus Lymphadenopathy Unilateral tonsillar enlargement with
uvular deviation to opposite side
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DIAGNOSIS
Primarily clinical Needle aspiration can be both
diagnostic and temporarily therapeutic
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TREATMENT
Ensure hydration and pain relief Otolaryngology consult Intravenous antibiotics with broad
coverage Needle aspiration: well-tolerated with
up to 90% resolution rate Incision and drainage: incise mucosa
above tonsil and open cavity Abscess tonsillectomy now last resort
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CASE # 3
4 year old boy with a 2 day history of sore throat, dysphagia, and fever.
Today he had fever, “noisy breathing”, and drooling. He refused to move his neck at his PMD.
Physical exam: Temperature 102.5F, red throat, drooling, stridor, neck stiffness, and cervical lymphadenopathy
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RETROPHARYNGEAL ABSCESS Abscess between the vertebrae and the
esophagus from the skull base to the mediastinum at T6
Often polymicrobial – Group A Strep – Anaerobes – Staph aureus
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CLINICAL PRESENTATION
Sore throat Fever Stridor Dysphagia leading to drooling Stiff neck Can lead to airway compromise Tends to occur in younger children as
lymph nodes in space atrophy with age
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DIAGNOSIS
Lateral neck radiograph – increase in the width of soft tissues
anterior to the vertebrae (>7 mm at C2 or >14mm at C6)
– OR greater than half the width of the adjacent vertebral body at C2
CT
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TREATMENT
Intravenous antibiotics: must include coverage for beta-lactamase producing organisms – IV Unasyn/ Timentin – IV Clindamycin
Often require surgical drainage
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CASE # 4
3 year old boy in daycare with a 2 day history of cough and rhinorrhea.
Tonight awoke from sleep with “noisy breathing”, cough, and retractions. Symptoms improved during the drive to the hospital
Physical exam: Temperature 101F, respiratory rate 30, saturation 99%, no respiratory distress, stridor, or cyanosis, mild suprasternal retractions
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CROUP
Most common cause of infectious upper airway obstruction in children
Usually affects children between 6 months and 4 years during winter and early spring
Due to viruses – Parainfluenza (60%) – Influenza – Adenovirus – RSV
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CROUP
Virus invades epithelium of pharynx up to larynx causing endothelial damage, edema of the vocal cords and subglottis
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CLINICAL PRESENTATION
Precedent upper respiratory infection Low-grade fever Barky cough Tachypnea Retractions Inspiratory stridor
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DIAGNOSIS
Clinical Airway radiographs: narrowing of
subglottic area (steeple sign) with ballooning of hypopharynx
Radiograph must be taken during inspiration with neck extended
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TREATMENT
Cool mist Racemic Epinephrine: observe for 2
hours Decadron Occasionally must intubate
– use endotracheal tube 0.5 mm smaller than estimated to avoid damage to edematous subglottic tissue and minimize suglottic stenosis
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CASE # 5
8 year old boy with a 2 day history of cough and fever who developed “noisy breathing” per his mother.
Physical exam: Temperature 102.5F, respiratory rate 30, saturation 95%, inspiratory stridor, suprasternal and subcostal retractions
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BACTERIAL TRACHEITIS
Is it bacterial colonization of croup or superinfection due to mucosal destruction and local immunodeficiency induced by a viral infection?
Debris contains sloughed epithelium, pus, and secretions
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BACTERIAL TRACHEITIS
Most common bacteria – Staph aureus – Group A Strep – Moraxella – Strep pneumoniae
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PRESENTATION-YOUNG CHILDREN
Younger children are more toxic appearing at presentation and frequently require intubation to prevent respiratory failure, perhaps due to smaller caliber of airway
Fever Barky cough Stridor with respiratory distress
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PRESENTATION-OLDER CHILDREN
Non-toxic at presentation Fever Cough Stridor
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DIAGNOSIS
Clinical suspicion Airway radiograph: irregular tracheal
margin Gold standard is endoscopy: shows
pus and debris in trachea and at vocal cords
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TREATMENT
To operating suite for direct visualization and removal of membrane
If necessary intubate for airway toilet Intravenous antibiotics
– IV Nafcillin and a 2nd or 3rd generation cephalosporin
– IV Clindamycin and Chloramphenicol
Admit to ICU
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CASE # 6
3 year old boy with 12 hours of dysphagia and fever.
He acutely developed stridor, respiratory distress, and drooling.
Physical exam: Temperature 103F, respiratory rate 30, unable to obtain saturation, anxious appearing child sitting forward, jaw thrust out, stridor, suprasternal and subcostal retractions
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EPIGLOTTITIS
Normal bacterial colonization of the mucosa
Inflammatory edema of submucosa Involves aryepiglottic folds,
arytenoids, and, eventually, the entire supraglottis.
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EPIGLOTTITIS
Most common bacteria – Haemophilus influenza Type B – Streptococcus pneumoniae – Staphylococcus aureus – Group A Strep
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CLINCAL PRESENTATION
Abrupt onset of respiratory symptoms Fever Anxiety Stridor Respiratory distress Drooling
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CLINICAL PRESENTATION
Tripod position: sitting with jaw thrust forward
“4 Ds and an S”
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DIAGNOSIS
Must have high index of suspicion as extensive work-up can be detrimental
Lateral neck radiograph: swollen epiglottis (thumb sign), thickened aryepiglottic folds
Direct visualization while establishing artificial airway
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TREATMENT
ESTABLISH AIRWAY!!! Minimize agitation until airway
established by the most experienced physician available
Intravenous antibiotic – IV Ceftriaxone – IV Cefuroxime – IV Cefotaxime – IV Ampicillin and Chloramphenicol
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TREATMENT
Contacts must receive Rifampin propylaxis
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ANY QUESTIONS??