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Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_5200_Библиотеки_им_академика_М_И_Перельмана

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INITIATINGDRUGTHERAPY
GoalsofDrugTherapy
ThegoalsoftherapyforAOMincludesymptomaticpainrelief,appropriateuseofantibioticstoprevent complications,andjudicioususe ofantibioticsto preventfutureantimicrobialresistance.Symptomatic painrelief can be achieved with over-the-counteranalgesics such as acetaminophen or anonsteroidal antiinflammatorydrug (NSAID) such as ibuprofen, andshould be offered regardless of antibiotic use, unless hypersensitivity exists. Local topical anesthetics containing benzocaine or procaine should be reservedforchildrenover 5years ofageandmayprovidebriefadditionalpainrelief.Antibiotics are utilized to eradicate the infectingorganism andpreventcomplicationssuch as mastoiditis and hearing impairment. However, due to concerns of microbial resistance and adverse effects, clinicians should avoidunnecessaryuseofantibiotics.
ObservationalTherapyversusAntibioticTherapy
ThedecisiontomanageAOMwithantibiotics isbased onpatient-specific characteristicssuchas age, bilateralinvolvement,presenceofotorrhea,andseverityofillness(Lieberthaletal.,2013).Allpatients withsuspectedAOMwhoareyoungerthanages6monthsshouldreceive antibioticsduetodiagnostic difficultiesandhighriskofcomplications.Forpatientswithnon-severe,unilateralAOMwithoutotorrhea who are older than age 6 months, the role of antibiotics is unclear, and the decision to provide symptomaticreliefwithcloseobservationcanbemade.Thedecisiontoobserveandwithholdantibiotics isbasedonthehighrateofspontaneousresolution(approximately80%)andoverlapofnonspecificAOM symptomswithviralURIs(Hershetal.,2013).Observationtherapyrequiresimplementationoffollow­upwithin48to72hourstoensureantibioticscanbeinitiatedifthechild’sconditionworsensorfailsto improve.Thetechniqueforobservationaltherapyiscontroversial:observewithorwithoutaprescription withinstructionstofillafter2to3daysifsymptomspersist(Chaoetal.,2008).Thisdecisionshouldbe based on the prescriber’s discussionwith the caregiver andassessmentof likelihoodtoadhere to the plan.
Patientswithotorrheaorseveresymptoms(i.e.,toxic-appearingchild,persistentotalgiamorethan48 hours,temperaturemorethanorequalto102.2°Finthepast48hours,oruncertainaccesstofollowup) requireantibiotictherapyregardlessofage.IfAOMisidentifiedbilaterally,thedecisiontotreatisbased on the patient’s age: AOM requires antibiotic therapy only if the patient is less than 2 years of age. Patients2yearsoldorgreaterwithbilateralAOMwithoutotorrheaorseveresymptomsmayinitiallybe managedwithobservationtherapyafteradiscussionwiththechild’sfamilytounderstandthedecision.
Penicillins
First-linetherapyforAOMishigh-doseamoxicillinforadequatemiddleearpenetrationandtoovercome intermediate-resistantS.pneumoniae(Lieberthaletal.,2013;Figure17.1;Table17.3).Ifthechild has receivedamoxicillininthepast30daysorhasconcurrentpurulentconjunctivitisorallergytopenicillin, amoxicillin may not be appropriate. Recent receipt of amoxicillin or failure to improve while on amoxicillinraises concernofresistantorganisms causingthe infection,suchasM.catarrhalis and H. influenzae.Therefore,theadditionofbeta-lactamaseinhibitortoabeta-lactam or useofabeta-lactam stablecephalosporin(seeCephalosporinssectionfollowing)isnecessary.Amoxicillin—clavulanateisa combination productcommerciallyavailableintheUnitedStates invariousconcentrations oftheoral
suspension, chewables, tablets, and extended-release tablets. The major difference among these formulationsistheratio ofclavulanatetoamoxicillinandthereforemaynotbeinterchanged.Themost commonadverseeffectofantibioticsisdiarrhea,whichisevenmoresowithamoxicillin—clavulanate when the dosage of clavulanate is too high (Hoberman et al., 2017). Since high-dose amoxicillin is recommended for AOM treatment, use of amoxicillin—clavulanate standard ratio (clavu-lanate to amoxicillin,1:7) would result inexcess exposure of clavulanate anddiarrhea. Therefore, theES oral suspensionformulation(ratio1:14)orXRformulationfortablets(ratio1:16)shouldberecommendedto limitexcessiveexposuretoclavulanateandthereforereducetheincidenceofdiarrhea.
Cephalosporins
Ifthepresenceofapenicillinallergyiselicitedfromthepatientorcaregiver,thetypeofreactionshould beassessed.Fortunately,thecross-reactivitybetweenpenicillinsandmostsecond-generationandthird­generationcephalosporinsislowduetodistinctchemicalstructures(Nortonetal.,2018).Therefore,oral formulations of cefdinir andcefpodoxime,whichare third-generationcephalosporins, andcefuroxime, whichisasecond-generationcephalosporin,arerecommendedforpenicillin-allergicpatients,regardless ofreactiontype(bothanaphylacticandurticarialreaction)(Table17.3).
FIGURE17-1Ireatmentalgorithmforacuteotitismedia.AOM,acuteotitis media;IM,intramuscular;
TM,tympanicmembrane.
TABLE17.3
OverviewofAntibioticsforAcuteOtitisMedia
*
Standardratioofclavulanatetoamoxicillinof1:7. tESratioofclavulanatetoamoxicillinof1:14. *Standard125mgofclavulanatepertablet.
§XRratioofclavulanatetoamoxicillinof1:16. ES,extrastrength;GI,gastrointestinal;IM,intramuscular;TM,tympanicmembrane;XR,extendedrelease.
For patients who are persistently vomiting or cannot tolerate oral medication for other reasons, ceftriaxone, a third-generation cephalosporin, administered as an intramuscular (IM) injection, is an option as a single dose for initial treatment or daily dosing for a total of three for repeat antibiotic treatmentduetotreatmentfailure.
Macrolides
Historically,macrolidesincludingazithromycinanderythromycinwererecommendedforpatientswitha history of anaphylactic reaction to penicillins. Due to limited macrolide efficacy against both S. pneumoniae and H. influenzae and realized lower rate of cross-sensitivity to cephalosporins among penicillin-allergicpatientsthanpreviouslyreported,macrolidesarenolongerrecommendedbytheAAP forAOM(Lieberthaletal.,2013).
Clindamycin
Similarto macrolides,clindamycinhistoricallywasanoptionfor patients whohadananaphylactic to penicillin.Butagain,duetoconcernsofclindamycin’slackofactivityagainstgramnegativebacteria,such asH.influenzaeorM.catarrhalis,itisnolongerrecommended.Clindamycinmaybeusedforsuspected DRSP,butitmaynotbeeffectiveagainstmulti—drug-resistantstrains,suchasserotype19A(Kaplanet al.,2015).
SelectingtheMostAppropriateAgent
Figure17.1outlinestheprocessforselectingthemostappropriateagent.
First-LineAntibioticTherapy
Oncethedecisiontoinitiateantibioticsismade,regardlessofwhetheranobservationperiodhaspassed ornot,thesameantibioticdecisionalgorithmapplies(Figure17.1).Amoxicillinisconsideredthefirst- line treatment for AOM in patients who show severe symptoms and who did not have a course of amoxicillininthepast30daysorare notallergictopenicillin.Forthosepatientswhohadacourseof amoxicillinintherecentpast,treatmentwiththecombinationamoxicillin—clavulanateis indicated.In patientswithpenicillinallergy,oneofthecephalosporinsisindicatedasthefirst-linetreatment.
Second-LineAntibioticTherapy
Patientswho receive antibioticsfor morethan72 hours withpersistent,severe symptomsare deemed treatmentfailure.Thismaybeduetothepresenceofaresistantorganism,aviralinfectionwhichwould be unresponsive to antibiotic therapy, inadequate concentration of antibiotic in the middle ear, or noncompliance with the prescribed regimen. Treatment failure requires escalation to the next step in managementandishighlydependentontheinitialtherapy.Ifthepatient’s condition does not improve with high-dose amoxicillin treatment, therapy should be switched to amoxicillin—clavulanate.Forpatientswhofaileitheramoxicillin—clavulanateoranoralcephalosporin (i.e., cefpodoxime,cefuroxime,cefdinir), escalationtoceftriaxoneasa single dailyIMor intravenous injectionfora3-daycourseisrecommended(Leibovitzetal.,2000).Tympanocentesisforbacteriologic diagnosisisanoptionforpatientswhohaverepeatedlyfailedtherapy.TheeffusionissentforGramstain, culture,andantibioticsusceptibilitytestingtotailortherapytothecausativeorganism.
MonitoringPatientResponse
Thedurationofantibiotic therapyisdependentontheseverityandageofthepatient:severeAOMor patientsyoungerthanage2yearsshouldreceivea10-daycourse,patientsofage2yearsoroldershould be treated witha 7-daycourse, and those ofage6 years and oldermaybenefitfrom a shorter,5-day course of therapy (Lieberthal et al., 2013). Reduced duration of 5 days was compared to a 10-day durationofamoxicillin/clavulanateinchildrenof age6 to23 monthswithAOM;this wasassociated withsignificantlyworseoutcomes(Hobermanetal.,2016).Symptomresolutionshouldoccurwithin2to 3 days, andthepatientshould achieve completeresolutionof AOM symptoms after 7 days;however, asymptomatic MEE may persistifinspectedbypneumatic otoscope. The patientor caregiver mustbe
counseledtocontinueantibiotictherapyevenifsymptomsresolvebeforecompletionoftheentiretherapy coursetopreventrecurrence.
RECURRENTACUTEOTITISMEDIA
RecurrentAOMisdefinedasmorethan3episodeswithin6monthsor4episodeswithin12months,with 1 episodeinthepreceding6 months.Recurrenceismostcommonlyduetorelapse (infectionwiththe same organism) or reinfection (infection with a different organism). Management of recurrent AOM remainscontroversial, but may includeepisodic antibiotic treatment,adenoidectomy, ortympanostomy tubeinsertion.However,theeffectoftheseinterventionsonOMrecurrenceisinconsistent,andevidence is contradictory. The American Academy of Otolaryngology: Head and Neck Surgery Foundation published guidelines stating tympanostomy tube insertion should be offered to children with bilateral OMEanddocumentedhearingdifficultiesfor3monthsorlonger(Rosenfeldetal.,2013).Anadditional indicationisforchildrenatincreasedriskofspeech,language,orlearningproblemsfromOMEdueto baselinesensory,physical,cognitive,orbehavioralfactors.Myringotomyandinsertionoftympa-nostomy tubes improve AOM symptoms by allowing drainage of the effusion; however, reduction in OME recurrence is not consistent. Complications of tube placement include otorrhea, myringosclerosis, perforation,andtissuegranulationasseenonotoscopicexamination.
Prophylaxisand/orPrevention
Use of antibiotic prophylaxis for recurrentAOMis controversial due to lack of supporting evidence. Cost, adverse effects, and contribution to bacterial resistance emergence do not outweigh the small reductioninfrequencyofAOMwithlong-termantibioticprophylaxis.Therefore,antibioticprophylaxisis nolongerrecommendedforchildrenwithrecurrentAOM.
TheCentersfor DiseaseControl andPrevention’s (CDC)childhoodvaccinationschedule should be followed to reduce preventable diseases. The vaccines pertinent to the prevention of AOM are the pneumococcal,H.influenzaetypeB(HiB),andinfluenzavaccine.Pleaserefertothepreventionsection ofthischapterforadetaileddiscussionontargetedvaccinegroupsandcurrentrecommendations.
OTITISEXTERNA
DiagnosticCriteriaandClinicalPresentation
OE diagnosis requires all three criteria: symptoms of ear canal inflammation such as otalgia (often severe),itching,orfullness;signsofearcanalinflammationsuchastendernessoftragusand/orpinna;and anerythematousearcanalwithoccasionalotorrhea(Rosenfeldetal.,2014).Hearingisusuallyunaffected unlesspressure andfullnessintheear exist,producingoccasionalconductiveor sensorineural hearing loss. Jaw pain may also be present.Acute OE diagnosis requires rapid onsetofsigns and symptoms within48hoursinthepast3weeks.Differentiationfromotherpossiblecausesofotalgia,otorrhea,and inflammationof the ear canal, suchas AOM,isimportantdue tooverlapping pathologies thatrequire differenttreatmentmanagement.
Patient evaluation should include history of symptoms, water exposure, local trauma, past medical historyofinflammatoryskindisordersordiabetes,andhistoryofearsurgeriesorlocalradiotherapy.As
mentioned in the Diagnostic Criteria and Clinical Presentation section, otoscopic examination may requirecerumenordebrisremoval.IftheTMisbulgingorerythematous,thepatientshouldbeworkedup forOM.Examinationofpinnaandadjacentskinforregionallymphadenitisandcelluli-tisisincludedas well. Otomycosis, thatis,fungalOE, presents withintensepruritus, aural fullness, clearotorrhea,and fluffy, cotton-like debris in the external ear canal upon examination (Kesser, 2011). Necrotizing OE diagnosis is confirmed with an elevated erythrocyte sedimentation rate and abnormal computed tomographyor magnetic resonance imagingscanto detecta skull base osteomyelitis(Rosenfeld et al.,
2014).
INITIATINGDRUGTHERAPY
GoalsofDrugTherapy
ThegoalsofOEtreatmentaresimilartothoseofOM:decreasingtheaccompanyingpainanderadicating thecausativeorganisms. Thiscanbeaccomplishedwithsystemicanalgesicand/orantiin-flammatorydrugsanddirectototopical applicationofantimicrobialagents,respectively.
Pain relief can be achieved with orally administered acetaminophen or NSAIDs given alone or in combinationwithanopioidformildtomoderatepain(Rosenfeldetal.,2014).Topicalanestheticdrops, suchas benzocaineotic solution,arenotrecommendedduetopotential maskingofunderlyingdisease statesandlackofFoodandDrugAdministration(FDA)approvalforOEindication.
ManagementofOEbeginswithclearinganyobstructingdebrisorexcesscerumenfromthecanal(i.e., auraltoilet)andcheckingtheintegrityoftheTMtodetermineifextensionbeyondtheearcanalispresent. Topical therapyis themainstayofOE treatment(i.e., antibiotics,steroids, or combinationtreatments). Topicalantimicrobialsarepreferredoversystemicadministrationtoachievehighconcentrationatthesite ofinfectionwhilereducingsystemicadverseeffectstothepatient.Selectionoftheappropriateproduct mustincludeevaluationofthepatient’sinfection,predisposingfactors,adherence,andmedicationcosts (Boyce&Balakrishnan,2018).Thedurationofototopicalantibiotictreatmentis7to10days.
OralantibioticsmayberecommendedforpatientswithacuteOEinfectionsextendingoutsidetheear canalorcertainhostfactorssuchasdiabetes,immunedeficiency,orinabilitytoeffectivelydelivertopic therapy. Systemic antibioticsshould also be considered for patients withrecurrentepisodes of OE or clinical signs of necrotizing (i.e., malignant) OE, which is a serious and potentially life-threatening complicationoftheinfectionextendingtothemastoidor temporalbone.Immunocompromisedpatients, including the elderly with diabetes and human immunodeficiency virus, are at the highest risk of necrotizingOE.ChronicOEisasingleepisodelastinglongerthan3monthsor4ormoreepisodesin1 year;itisoftentheresultofallergies,chronicdermatologicconditions,orinadequatelytreatedacuteOE (Rosenfeldetal.,2014;Schaefer&
Baugh2012
)
AntibioticTherapy
Ifedemapreventsapplicationofthedrops,acompressedcelluloseearwickcanbeplacedintotheearto facilitatedrugdelivery.Themedicationshouldbeappliedtothewickuntilinflammationsubsidesandthe wick falls out or is removed as instructed by a clinician (usually within 24—48 hours). Ototopical antimicrobials for OE include aminoglycosides, polymyxin B, and quinolones. Ototopical selection is basedonseveralfactorsincludingTMcondition(e.g.,perforation,tympanostomytubes),riskofadverse
effect, adherence issues, cost, patient preference, and physician experience/preference (Table 17.4). Systemicantimicrobials are notrecommendedforuncomplicated,acuteOE,buttheyarerecommended forinfectionsextendingbeyondtheearcanal or whencertainfactorsarepresent,suchas uncontrolled diabetes,immunocompromisedstatus,historyofradiotherapy,orinability todelivertopicalantibiotics. Otomycosis requires debridement and topical antifungal therapy, such as a powdered mixture of chloromycetin, sulfanilamide, amphotericin, and hydrocortisone (Kesser, 2011). Necrotizing OE is managed with surgical debridement and systemic, prolonged antipseudomonal and antistaphylococcal antibiotics.
Fluoroquinolones
The fluoroquinolone antibiotics, thatis, ciprofloxacin andofloxacin, are oftenused to treatinfections associatedwithOE,duetoitsidealantipseudomonalactivity.Higherbacteriologicandclinicalcurerates havebeenobservedwithquinolone-containingoticdropsthanwithnon-quinolonetherapy(Mösgesetal.,
2011). Inaddition,theseagentsmaybe more tolerable thanneomycin—polymyxinBduetoinfrequent administration,lessadverseeffects(e.g.,stinging),andlowerriskofhypersensitivity.Thisinformation mustbebalancedwiththehighcostofquinoloneoticpreparations.Ciprofloxacin0.3%—dexamethasone
0.1% (Ciprodex) and ofloxacin (Floxin Otic) are commercially available fluoroquinolone otic formulations.(SeeTable17.4 for dosage andadverse effectinformation.) However, the additionofa corticosteroid to the antibiotic formulation is controversial. The antiinflammatory effects of corticosteroidspotentiallyincludereducedpain,swelling,anditching.Ciprofloxacinoticsolutionwas foundto be non-inferior tothe corticosteroid plusantibiotic otic combinationsolution,polymixinB— neomycin—hydrocortisone based on clinical cure (Drehobl et al., 2008). The risk of local immunosuppression and potential hypersensitivity reactions should be studied before recommending corticosteroid—fluoroquinoloneantibioticcombinationoticsolutionsfirstline.Ofnote,theFloxinOtic preparationdoesnotcontainacorticosteroid.
TABLE17.4
OverviewofTreatmentforOtitisExterna
Generic(Trade)Nameand Dosage
SelectedAdverseEvents Contraindications Special
Considerations
PolymyxinBsulfate, neomycin,andhydrocortisone
Children:3dropsintoearcanal TID-QIDformaximumof10 days maximumof10daysAdults:4 dropsintoearcanalTID-QID formaximumof10days
Superinfection,contact dermatitis,ototoxicitywith prolongeduse
Herpessimplex,fungal, tubercular,orviralotic infections Perforatedeardrum Prescribewithcautionin pregnancy(categoryCdrug) andinbreast-feedingpatients
Useoticdrops foramaximum of10days
Ofloxacin(Floxin)
Children6months-12years:5 dropsintoearcanaloncedaily for10days Children>12yearsandadults: 10dropsoncedailyfor10days
Pruritus,sitereaction, dizziness,earache,vertigo,taste perversion,paresthesia,rash
Perforatedeardrum Prescribewithcautionin pregnancy(categoryCdrug) andinbreast-feedingpatients
Useoticdrops foramaximum of10days
AminoglycosideAntibiotics
The combination product neomycin sulfate—polymyxin B—hydrocortisone acetate (Cortisporin) has historically been used for OE. The combination of the gram-positive coverage of the aminoglycoside neomycinandtheantipseudomonalactivityofpolymyxinhasmadethiscombinationthegoldstandardof treatmentinthepast.AsstatedintheFluoroquinolonessection,theadditionofacorticosteroidwiththis combination remains controversial. Concerns associated with the side effect profile, particularly the hypersensitivity reactions related to neomycin(and possibly the preservative), and frequency of dose administrationmustbe weighedagainst thelowcostfor this generic product. Furthermore, ototoxicity withneomycinhasbeenreported,althoughthenumberofreportsislowandthedataarespeculative.Due toconcernsofototoxicity,aminoglycosides shouldnotbe usediftheTMisnotintactsincetheriskof injuryoutweighsthebenefitandefficacious,non-ototoxicantibioticsareavailable(i.e.,quinolones).
SelectingtheMostAppropriateAgentFirst-LineTherapy
OEwithintactornon-intactTMistreatedinitiallywitha fluoroquinoloneantibiotic. Theselectionof ciprofloxacinversusofloxacindependsontheformularystatusoftheagents,as well as theclinician’s experiencewithaddedcorticosteroids(Table17.5).
Second-LineTherapy
Neomycin-polymyxinBcombinationsareconsideredsecond-lineagents,primarilyduetotheirsideeffect profile and precaution against use for nonintact TM OE. The lower cost of these agents, however, warrantsconsideration,particularlyinpatientswithoutinsuranceorothermeansofpayingforthemore expensivefluoroquinolones.
Third-LineTherapy
Antifungals can be considered if a patient fails to respond to initial topical antibiotic therapy (e.g., clotrimazole,miconazole,bifonazole,ciclopiroxolamine,tolnaftate)(Vennewaldetal.,2010).Systemic antibiotic therapywithP.aeruginosaandS.aureus coverageisrecommendedif ear canalobstruction cannotberelievedorifinfectionextendsbeyondtheearcanal.
TABLE17.5
RecommendedOrderofTreatmentforOtitisExterna
Order Agents Comments
First line
Fluoroquinolonedrops Floxinisnot
recommendedforpatients<6monthsUseallotic dropsforamaximumof10days
Second line
Combinationneomycin-polymyxinBdrops Alldropsarecontra-indicatedincasesofperforated
eardrum
Third line
Antifungaldrops Systemicantipseudomonalorantistaphylococcal agent
Considerifapatientfailstorespondtoinitialtopical antibiotictherapy Considerifearcanalobstructioncannotberelievedorif
infectionextendsbeyondtheearcanal
SpecialPopulationConsiderations
Childrenwith tympanostomytubesplaced within1 year ofan acute OE episode are assumed tohave nonintact TM and therefore should not receive an ototoxic antibiotic. Historical concerns of fluoroquinoloneuseinchildrenarenotrelevantduetotheminimalsystemicabsorptionandsmalldose administeredototopically.
MONITORINGPATIENTRESPONSE
Symptom improvement should occur within 48 to 72 hours after appropriate treatment initiation, but completesymptomresolutionmaytakeupto2weeks.Reassessmentofpatientswhofail initialtherapy mayincludeaddressingpatientadherencewiththerapy,re-examinationoftheearcanalandTM,aculture of the ear canal to identify causes of infection and target therapy, and consideration of underlying dermatologicdisorders.
PREVENTION
Preventionis thekeyandplaysasignificantroleinreducingtheoverall burdenofillness(e.g.,office visits, antibiotic expenditures, severity of illness). Vaccination programs have been shown to have a favorable outcome on decreasing the overall incidence of the AOM, namely, those caused by S. pneumoniae,H.influenzae,andinfluenzavirus.
Theintroductionoftheheptavalentpneumococcalpolysaccharideconjugatevaccine(PCV-7,Prevnar­7;serotypes4,6B,9V,14,18C,19F,and23F)decreasedtheoverallincidenceofinvasivepneumococcal diseaseby69%inchildrenyoungerthanage2from1998to1999and2001(Pichichero&Casey,2007). Specifically, reductions in OM office visits and severity of illness have been observed since the introductionofthevaccine(Blacketal.,2000).Whenthe7-valentvaccinewasbroughttothemarketin 2000,theserotypesrepresentedapproximately70%oftheserotypesfoundinAOM.Unfortunately,after the introduction of PCV-7, otopathogenic S. pneumoniae serotype 19A has been identified as being resistant to all FDA-approved antibiotics for children withAOM(Pichichero & Casey,2007). A13­valentpneumococcalconjugatevaccine(PCV-13,Prevnar-13)wasapprovedbytheU.S.FDAin2010to containthe6serotypesresponsiblefor63%ofinvasivepneumococcaldisease(serotypes1,3,5,6A,7F, and 19A, in addition to the 7 serotypes of PCV-7). PCV-13 has replaced PCV-7 in the childhood vaccinationschedule(CentersforDiseaseControlandPrevention,2020).
In addition to the routine pneumococcal vaccination with PCV, the polysaccharide (PPSV) is recommendedforchildrenolderthanage2yearswithcomorbidities.Itisnotindicatedininfantsyounger thanage2yearsduetopoorimmunogenicitytoPPSV.PPSVcontains23pneumococcalserotypesandis indicated for children withchronic diseases such as chronic lungdisease or congenital heartdisease, cochlearimplant,andmore.Checkthemostup-to-daterecommendationsfromtheAdvisoryCommitteeon ImmunizationPractices(ACIP).
The HiB and influenza vaccines are also routinely recommended in the childhood immunization schedule.TheHiBvaccineisapolysaccharide,conjugatedproteincarrierindicatedforinfantsofage6 weeksandolder.Theinfluenzavaccineis recommendedfor allpersonsover 6 monthsofage,butthe selectionofthecorrectformulationisdependentontheageofthepatient.Influenzavaccineisavailable
as a trivalentor quadrivalentinactivatedinfluenza vaccine (IIV)for IM injection, and live attenuated vaccine(LAIV)asanintranasaladministration.TheIIVrequirestwodosesduringasinglefluseasonfor childrenofage6 monthsthrough8 years ifit’stheir first vaccinatedseason,dependingonthecurrent ACIP.TheminimumagetoreceivetheLAIVisage2years.Inaddition,theLAIVshouldnotbegivento individualswhoarenotimmunocompromisedorpregnant.Currentrestrictionson LAIVusemustbecheckedbeforerecommending(CentersforDiseaseControlandPrevention,2020).
For up-to-date ACIP vaccine administration schedules, check the CDC Web site at
www.cdc.gov/vaccines(CentersforDiseaseControlandPrevention,2020).
PATIENTEDUCATION
DrugInformation
Administrationofototopicalproductsrequirespatienteducationandpotentiallyanassistanttoadminister the drops for them as self-administration may be difficult. Ototopicals should be warmed to body temperaturebeforeinstillationtoavoiddizziness.Towarmtheoticsolution,thepatientshouldholdor rollthebottleinthehandfor1to2minutes.Toinstilldrops,thepatientshouldliewiththeaffectedear upward,administerenoughdropstofilltheearcanal(orsaturatetheearwickifinplace),gentlytugthe auricletohelpexpeltrappedairandassistdrugdelivery,andremaininthispositionforabout5minutes tohelpthesolutionpenetrateintotheearcanal.
Nutrition/LifestyleChanges
The use of hypoallergenic ear canal molds when swimming or showering is controversial for the preventionofOE.Dryingtheearswithacoolhairdryertoaidremovaloffluidafterswimmingmaybe beneficial.Thepatientshouldavoidtryingtoremoveearwaxmechanicallywithcotton-tippedswabsto preventtrauma.Itisimportantforthepatienttoavoidwaterintheearuntiltheinfectionclears(usually5 —7days)andfor4to6weeksafterward.Toaccomplishthis,haircanbewashedinasinkinsteadofa showerortub,andthepatientcanuseashowercapwhenbathing.
ComplementaryandAlternativeMedications
“Homeremedies”ofa1:1solutionofwhitevinegarandrubbingalcoholhaveneverbeenevaluatedor substantiatedandthereforearenotrecommendedforOE.Inaddition,earcandlesarenotefficaciousand maybeharmful(e.g.,hearingloss).
CASESTUDY1
C.J.,age17, isonhis highschool swimteam.Hepresentswithsuddenonsetofrightearpainthat worsensatnight.Hesaysthatthepainintensifieswhenhetoucheshisearandthathehasafeelingof fullnessintheear.Onexaminationofhisrightear,theauditorycanalisedematousanderythematous, withyellowcrusting.Histemperatureis97.8°F,andhistympanicmembrane(TM)ispearlygraywith landmarksintact.Hisleftearexamiswithinnormallimits(LearningObjectives1and3).