Outpatient GI for the PCP Flashcards
What are some common GI complaints in primary care setting?
Reflux/heartburn & dysphagia
Constipation
Diarrhea
Abdominal pain
Elevated LFTs/liver lesion pearls
Components of taking a GI history?
Duration/timing: acute vs chronic; time of day; triggers (eating/drinking, stress, etc)
Description of symptoms: quality, severity, location
Associated symptoms: both upper and lower GI sx (one often affects the other…); consider systemic processes (rash, joint s/s, fevers); red flag symptoms (see separate slide)
Treatments tried: historical and current
Prior evaluations: clinic visits, radiologic, procedural
What are some red flag symptoms in GI?
Dysphagia
Odynophagia
Early satiety
GI bleeding (melena/hematochezia) (upper or lower)
Unintentional weight loss
Unexplained change in symptoms (“new” IBS in a 70-year old probably isn’t a thing…)
Refractory symptoms
Unexplained iron deficiency anemia
Of note: if any red flag(s) symptoms present, refer for GI clinical visit and/or endoscopic evaluation
What is GERD?
GastroEsophageal Reflux Disease (also called heartburn)
Reflux of gastric contents into the esophagus + symptoms and/or complications
Not a single disease - multiple phenotypic presentations and different diagnostic considerations
How to make GERD diagnosis?
Suggestive symptoms
Characteristic mucosal injury seen at endoscopy and/or
Abnormal esophageal acid exposure demonstrated on pH monitoring study
Response to treatment
Components of a GERD-focused history?
Duration/timing: acute vs chronic; time of day; triggers (eating/drinking, stress, etc)
Description of symptoms: typical vs. atypical (acid reflux/heartburn, hoarse voice, cough, throat clearing, globus sensation)
Associated symptoms: dysphagia, constiption, red flag symptoms (dysphagia, odynophagia, refractory symptoms, longstanding, unevaluated sx, GI bleeding, early satiety, weight loss, night sweats, iron deficiency anemia)
Treatments tried: antacids, H2 blockers, PPIs, homeopathic/natural, lifestyle/dietary changes
Prior evaluations: prior GI clinic evals, ENT/laryngoscopy, EGD, pH testing
What is the first line treatment of GERD symptoms without red flag/alarm symptoms?
PPI trial (omeprazole MC)
Treatment takes time (70-80% relief at 4 weeks of PPI use)
Other: H2 blockers (typically less AEs than PPI but slower healing rate and slower heartburn relief than PPIs)
PPI pearls
Pre-prandial dosing is important (30-60 mins), taking with other medications is typically OK
PPIs are not necessarily forever medications (exceptions: LA grade C/D, EE (high relapse rate), Barrett’s)
Address modifiable risk factors and wean off/step-down when able/appropriate
Recommendations for medication monitoring vary (ex: AGA does not recommend monitoring Mg, creatinine, vitamin B12, vitamin D/calcium but use clinical judgement with each individual patient)
PPI tolerance
Refractory reflix
Strength varies (omeprazole as “standard” = omeprazole equivalent; pantoprazole and lansoprazole OE<1; esomeprazole and raberprazole OE >1)
Does taking PPIs increase the risk of GI infection?
Yes
“PPIs are the most effective medical treatment for GERD. Some medical studies have identified an association between the long-term use of PPIs and the development of numerous adverse conditions including intestinal infections, pneumonia, stomach cancer, osteoporosis-related bone fractures, chronic kidney disease, deficiencies of certain vitamins and minerals, heart attacks, strokes, dementia, and early death… High-quality studies have found that PPIs do not significantly increase the risk of any of these conditions except intestinal infections… the well-established benefits of PPIs far outweigh their theoretical risks.” - American College of Gastroenterology
What are some procedural work ups for GERD?
EGD, EGD WITH BRAVO capsule, pH impedence
These are typically done in GI setting, not primary care setting
What is EGD?
Direct esophageal evaluation with EGD camera
What are some benefits of EGD?
Tissue visualization (esophagitis grading, Barrett’s evaluation)
What are some drawbacks of EGD?
Invasive, requires sedation, wait time
What is EGD with BRAVO?
EGD + 72 hour acid-exposure monitoring w/ sx correlation
What are some benefits of EGD with BRAVO?
EGD pros as well as: symptom correlation, longer symptom monitoring period than pH
What are some drawbacks of EGD w/ BRAVO?
EGD cons as well as: capsule discomfort, capsule removal, monitoring device, no bile assessment
What is pH impedence?
24 hour acid/bile exposure monitoring w/ sx correlation
What are some benefits of pH impedence?
Acid + bile exposure assessment, symptom correlation
What are some drawbacks of pH impedence?
No tissue visualization, requires PO/swallow, uncomfortable, monitoring device, shorter symptom monitoring period than BRAVO
What is Barrett’s esophagus?
Damage to the lower portion of the tube that connects the mouth and stomach (esophagus)
Usually the result of repeated exposure to stomach acid (MC diagnosed in patients with long-term GERD (up to 10%))
How to treat Barrett’s esophagus?
Requires lifelong PPI (qd-BID) + surveillance EGDs
Get EGD q3-5y if no dysplasia, yearly if dysplasia (if + for dysplasia, endoscopic therapies (BARXX) available)
Cancer risk with Barrett’s?
Annual risk for esophageal adenocarcinoma is low (0.12 - 0.33% yearly)
How to screen for Barrett’s?
“Screening” should be based on risk assessment: M + chronic (>5 years) reflux and/or weekly sx + 2 risk factors
Risk factors: >5 years of symptoms, >50 yo, M, caucasian, central obesity, current/former smoker, first degree relative
Alcohol not a risk factor
Do not recommend screening in F unless multiple RFs present
What is a hiatal hernia?
A condition in which part of the stomach pushes up through the diaphragm muscle
How to treat hiatal hernia?
Lifestyle + PPI therapy first line
Surgical repair (Nissen fundoplication) - is a BIG surgery involving chest/abdominal cavities, so not an “easy fix”
GERD in pregnancy?
Common
Secondary to hormonal changes, slower GI transit time, increased intra-abdominal pressure
Most resolve post-partum; 20% have residual symptoms
Of note: do not scope during pregnancy (unless emergency) - requires anesthesia
GERD medications in pregnancy?
Antacids (need to consider composition): aluminum and Mg hydroxide are safe (class B); sodium bicarb and calcium carbonate are not safe (avoid, class C)
Alginate (Gaviscon, Maalox): generally acceptable (no FDA classification)
Sucralfate: acceptable (FDA risk category B)
H2 blockers (famotidine preferred): acceptble (FDA risk category B)
PPI: reserved for refractory symptoms; avoid omeprazole (class C), others are class B
What is dysphagia?
Difficulty initiating a swallow or sticking/choking distally
Is dysphagia ever normal?
Dysphagia is NEVER normal and ALWAYS warrants further evaluation
Differentiating factors of dysphagia:
Location: oropharyngeal and esophageal dysphagia
Type: solids and liquids (can help differentiate between underlying structural vs. functional problem)
Other types of “throat/swallowing” complaints:
odynophagia (painful swallowing), globus sensation (constant foreign body-like sensation), rumination/regurgitation (bringing things back up, voluntary vs. involuntary)
Components of a dysphagia-focused history?
Duration/timing: frequency of occurrence, how long after eating/drinking
Description of symptoms: solid food vs liquid vs pill, vomiting vs eventually goes down?
Associated symptoms: GERD sx, halitosis, food allergies, asthma, ectopic history, aspiration events, systemic dysmotility/connective tissue disease symptoms
Treatments tried: dietary modifications, elimination diets, prior dilations
Prior evaluations: prior GI clinic evals, EGD, esophageal manometry
Types of dysphagia?
Oropharyngeal, esophageal
Describe oropharyngeal dysphagia, causes, and testing
Difficulty initiating swallow, excessive chewing, “gets stuck in my throat”, coughing with eating
Structural causes: Zenker’s, cervical osteophytes/surgery, cancer
Functional causes: dementia, stroke, Parkinson’s, ALS, other neuro
Testing: modified barium swallow study/video swallow, SLP referral