PREVALENCE OF GERD - FMDAfmda.org/gerd.pdfErosive GERD Presentations in Practice Esophageal...
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PREVALENCE OF GERDPREVALENCE OF GERDDefined by SymptomsDefined by Symptoms
!! Up to 40% of adultsUp to 40% of adults!! 50% of GERD patients have 50% of GERD patients have complicated diseasecomplicated disease
!! Chronic disease in mostChronic disease in most
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Erosive GERDErosive GERDPresentations in PracticePresentations in Practice
Esophageal –Typical Symptoms• Heartburn (nighttime/daytime)• Extraesophageal regurgitation
Extraesophageal – Atypical Symptoms
• Dysphagia• Bleeding (including occult)• Noncardiac chest pains
• Hoarseness• Cough, wheezing• Asthma-like symptoms
Untreated Complications• Peptic stricture• Barrett’s esophagus• Esophageal adenocarcinoma
Goyal, R.K., Harrison’s Principles of Internal Medicine.14th ed. 1998:1588-1596. Beers, M.H., et al. Merck Manual of Diagnosis and Therapy. 17th ed.1999:232. Garnett, W.R. et al. Pharmacotherapy.1997:17:938-958. Kahrilas, P.J., JAMA. 1996:276:983-988.
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GastroesophagealGastroesophageal RefluxReflux
Damage correlates with duration of refluxDamage correlates with duration of refluxexposureexposure
ANDAND
Caustic potential of refluxed materialCaustic potential of refluxed material
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Mechanism of RefluxMechanism of Reflux
!! Transient decrease in LES with normal baselineTransient decrease in LES with normal baseline
!! Truly Truly hypotensivehypotensive sphinctersphincter
!! HiatalHiatal herniahernia
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Protection from RefluxProtection from Reflux
!! Protection from reflux afforded by esophagealProtection from reflux afforded by esophagealacid clearanceacid clearance
Prolongation of clearance time occurs in 50%Prolongation of clearance time occurs in 50%of GERD patientsof GERD patients
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THE GERD SPECTRUMTHE GERD SPECTRUM
TypicalManifestations
(Heartburn/Regurgitation)
AtypicalManifestations* Complications
UlcerationStricture
Metaplasia(Barrett’s)
With Erosive EsophagitisWithout Esophagitis*
Angina-like PainAsthma/Cough
Laryngitis
* Requires Abnormal pH-metry
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Clinical ManifestationsClinical Manifestations
!! HeartburnHeartburn
!! RegurgitationRegurgitation
!! Chronic CoughingChronic Coughing
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Impact of heartburn during sleepImpact of heartburn during sleep
0
10
20
30
40
50
60
70
80
<Once 1-2X 3XHeartburn Episodes/Week
% W
ith H
eart
burn
Kept Awake (n = 453)
Woke Up During Night (n = 454)
4441
53 54
6770
The Gallup Organization. May 2000:26-27.
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Role of Role of EndoscopyEndoscopy
Alarm symptomsAlarm symptomsDysphagiaDysphagia
OdynophagiaOdynophagiaBleedingBleeding
Chest painChest painSupraesophagealSupraesophageal symptomssymptoms
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Use of Medication for HeartburnUse of Medication for Heartburn(n = 1,000)
Medication Use
%W
ith H
eart
burn
0
10
20
30
40
50
60
70
Prescription Nonprescription Both
47%
38%
15%
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Healing of Erosive Healing of Erosive EsophagitisEsophagitis
0%10%20%30%40%50%60%70%80%90%
100%
2 weeks 4 weeks 8 weeks 12 weeks
H2RAPPI
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Relief of HeartburnRelief of Heartburn
0%10%20%30%40%50%60%70%80%90%
100%
2 weeks 4 weeks 8 weeks
H2RAPPI
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PPI v. H2RA in MaintainingPPI v. H2RA in MaintainingRemissionRemission
34%
55%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
RAN OM20
3-D Column 1
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Healing of Erosive GERDHealing of Erosive GERD
0102030405060
708090
100
ompalanpan
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Nocturnal Acid BreakthroughNocturnal Acid Breakthrough
0%
20%
40%
60%
80%
100%
120%
ctr gerd barrett sclero
nabno nab
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NAB in GERDNAB in GERD
0%
10%20%
30%
40%50%
60%
70%80%
90%
PPI PPI+H2
NAB
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NonerosiveNonerosive Reflux DiseaseReflux Disease
70%
30%
NERDEE
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NERD v. EENERD v. EE
Heartburn severity is similarHeartburn severity is similar
Response to Rx is 10Response to Rx is 10––30% less30% less
Rarely have typical complications but ratherRarely have typical complications but ratheratypical complications/symptomsatypical complications/symptoms
24 hr esophageal pH studies normal in 50%24 hr esophageal pH studies normal in 50%
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Heartburn and Normal Heartburn and Normal EndoscopyEndoscopy
!! Abnormal acid exposureAbnormal acid exposure !! Functional heartburnFunctional heartburn
!! Hypersensitive v. not Hypersensitive v. not acid refluxacid reflux
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GERD and the OLDER PatientGERD and the OLDER Patient
!! FrequencyFrequency
!! Factors that influenceFactors that influenceLES pressuresLES pressuresAcid clearing timeAcid clearing timeHiatalHiatal herniahernia
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WARNINGWARNING!! Older patient less likely to report heartburnOlder patient less likely to report heartburn!! More likely to have More likely to have dysphagiadysphagia, chest pain, or , chest pain, or vomitingvomiting
Severity of symptoms does not correlate with the degree Severity of symptoms does not correlate with the degree of of esophagitisesophagitis therefore lower threshold to dotherefore lower threshold to doendoscopyendoscopy
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Barrett’s EsophagusBarrett’s Esophagus
!! ColumnarColumnar epithelium replaces the epithelium replaces the squamoussquamous epithelium in the distal epithelium in the distal
esophagus when reflux disease esophagus when reflux disease damages the mucosa and healing damages the mucosa and healing
occurs through a occurs through a metaplasticmetaplastic process. process. This columnar epithelium is a form of This columnar epithelium is a form of intestinal intestinal metaplasismetaplasis that is prone to that is prone to
develop develop adenocarcinomaadenocarcinoma..
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TreatmentTreatment
!! Symptom ReliefSymptom Relief!! PPIsPPIs
!! ComplicationsComplications!! Erosions, ulcers, stricturesErosions, ulcers, strictures!! ProgessionProgession of of metaplasiametaplasia
!! Effective acid suppression one step forwardEffective acid suppression one step forward!! MucosalMucosal ablation may be keyablation may be key
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Treatment of Reflux in Barrett’sTreatment of Reflux in Barrett’s
!! RationaleRationaleExposure to esophageal acid activates Exposure to esophageal acid activates protein protein kinasekinase pathways that increase pathways that increase proliferation and decrease apoptosis.proliferation and decrease apoptosis.
Markers of proliferation were reduced in Markers of proliferation were reduced in esophageal biopsies when acid was esophageal biopsies when acid was
normalized by PPI.normalized by PPI.
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? Screen GERD for Barrett’s ?? Screen GERD for Barrett’s ?
!! EGD in GERDEGD in GERD!! 3 to 5% have long segment3 to 5% have long segment
!! 10 to 15% have short segment10 to 15% have short segment
!! Who to screen ?Who to screen ?!! White males > 50 with White males > 50 with GerdGerd > 5 yrs.> 5 yrs.
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DysplasiaDysplasia
!! HGD associated with cancer 30HGD associated with cancer 30--40%40%
!! ACG RecommendationACG Recommendation!! No No dysplasia dysplasia q 3 yrq 3 yr
Low grade q 6 mo. x 2Low grade q 6 mo. x 2!! No progression then q 1 yr.No progression then q 1 yr.
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SurveillanceSurveillance
!! Treat aggressively prior to Treat aggressively prior to bx’sbx’s
!! HGD get 2HGD get 2ndnd opinionopinion!! Surgery v. survey q 3 mo.Surgery v. survey q 3 mo.
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Surveillance Initial Surveillance Initial DxDx
20 %20 %62 %62 %55--yr. survivalyr. survival
17 %17 %58 %58 %stage 0stage 0--11
58581919patientspatients
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Barrett’s and SurgeryBarrett’s and Surgery
!! 10 studies with 408 patients10 studies with 408 patients
!! 86% Segment unchanged86% Segment unchanged
!! Equal numbers regressed/progressedEqual numbers regressed/progressed
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Mucosal AblationMucosal AblationPhotodynamic therapy (PDT)Photodynamic therapy (PDT)
100 patients100 patients
Barrett’s undetectable in 43Barrett’s undetectable in 43Eradication HGD 88%Eradication HGD 88%Eradication LGD 92%Eradication LGD 92%
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Ablative TherapyAblative Therapy
EndoscopicEndoscopic mucosal resectionmucosal resection(EMR)(EMR)
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ProtonixProtonix 40 mg I.V. vs. Placebo40 mg I.V. vs. Placebo
-40
-20
0
20
40
60
80
100
Hours
% In
hibi
tion
PROTONIX I.V. 40 mg (n=8)Placebo (n=4)
8am 10am Noon 2pm 4pm 6pm 8pm 10pm 12pm 2am 4am 6am 8am
*pentagastrin stimulated
Data on file, Wyeth-Ayerst Laboratories. Study 100-US.Pisegna JR et al. Am J Gastroenterol. 1999;94:2874-2880.