L4: GERD Flashcards

(101 cards)

1
Q

2 CLASSIFICATIONS OF GERD

A
  • SYMPTOM-BASED GERD
  • TISSUE INJURY-BASED GERD
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2
Q

common symptoms of symptom based gerd

A
  • heartburn
  • regurgitation
  • dysphagia
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3
Q

less common symptoms of herd

A
  • odynophagia
  • water brash
  • belching
  • bloating
  • hypersalivation
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4
Q

unintentional spitting of
undigested food from the stomach into the mouth;
has a sour taste

A

regurgitation

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5
Q

composed of stomach acid +
saliva; cause of sour taste during regurgitatio

A

water brash

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6
Q

t or f: symptom nased gerd has esophagitis as a symptoms

A

f

tissue injury based gerd dapat

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7
Q

esophagitis in tissue injury based gerd may lead to complication if not managed such as:

A
  1. barretts esophagus
  2. strictures
  3. esophageal adenocarcinoma
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8
Q

lining of the
esophagus thickens and becomes red. It
makes it difficult to swallow, and makes
the patient more prone to GERD

A

barretts esophagus

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9
Q

narrowing of the esophagus.
Makes it more difficult for food to pass
from the esophagus to the stomach; also
makes it difficult to swallow.

A

strictures

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10
Q

type of
esophageal cancer wherein tumors may
form in the lining of the esophagus.
*Barret’s esophagus increases the risk of
developing this.

A

esophageal adenocarcinoma

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11
Q

Erosive esophagitis is higher in

A

men

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12
Q

High progesterone levels =

A

relaxation of
the lower esophageal sphincter (LES)

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13
Q

____ pressure relaxes the LES
further.

A

Intra-abdominal

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14
Q

obesity
- intraabdominal pressure
- les pressure

A
  • inc
  • dec
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15
Q

reflux that does not result
in injury or GERD

A

Non-pathologic reflux

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16
Q

Muscosal protective mechanisms:

A
  1. Esophageal acid clearance
  2. Mucosal resistance
  3. Salivary buffering of acid
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17
Q

normally
in tonic or contracted state to prevent backflow. It
only relaxes during swallowing to allow passage
of food.

A

Lower esophageal sphincter (LES)

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18
Q

defective LES; It
relaxes or opens even without swallowing

A

Transient LES relaxation

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19
Q

it becomes
weak and cannot contract

A

Decreased resting tone of LES

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20
Q

less neutralization of
acid

A

decreased salivation

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21
Q

weak
peristaltic movement, increasing contact time of
refluxate to the esophagus..

A

Impaired esophageal clearance

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22
Q

overtime, the
protective barrier of the esophageal barrier is
destroyed

A

Impaired tissue resistance

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23
Q

from smoking and
high fat meals

A

Delayed Gastric Emptying –

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24
Q

Delayed gastric emptying → stomach fills
up → ___ intraabdominal pressure
→____ of LES

A

increased

relaxation

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25
transient les relaxation causes
vomiting esophageal distention belching retching
26
TRANSIENT INCREASE INTRA-ABDOMINAL PRESSURE causes:
o Straining o Bending over o Coughing o Eating o Valsalva maneuver
27
weak sphincter muscles
atonic
28
Increased gastric acid also increases activation of…..
pepsinogen into pepsin
29
enzyme that can break down proteins and may cause inflammation of the esophagus
pepsin
30
Can cause duodenogastric reflux esophagitis or alkaline esophagitis
Bile acids & Pancreatic enzymes
31
An area of unbuffered gastric acid that accumulates in the upper part of the stomach after eating a meal
acid pocket
32
Associated with postprandial reflux syndrome
acid pocket
33
Indicative of complications of GERD and require further diagnostic evaluation
alarm symptoms
34
ALARM SYMPTOMS
- Dysphagia (common) o Odynophagia o Bleeding
35
Refers to when symptoms of GERD are associated with organs aside from the esophagus, especially the lungs
EXTRAESOPHAGEAL GERD SYNDROME
36
EXTRAESOPHAGEAL GERD SYNDROME symptoms
o Chronic cough o Laryngitis o Wheezing o Asthma (∼50% with asthma have GERD)
37
Preferred for assessing for mucosal injury and complications.
endoscopy
38
Camera-containing capsule swallowed by the patient offers the newest technology for visualizing the esophageal mucosa via endoscopy.
pillcam eso
39
Indication o Patients not responding to acid suppression therapy when endoscopy is normal o Those with atypical/extrapyramidal symptoms o Those contemplating surgery
ambulatory refluc monitoring
40
Best way to monitor a patient’s abnormal esophageal clearance, and to determine when the patient’s reflux occurs (morning or night)
ambulatory reflux monitoring
41
Indication o Those who have failed BID PPI therapy with normal endoscopic findings o Candidates for antireflux surgery o To evaluate peristaltic function of the esophagus o To assure proper placement of pH probes
MANOMETRY/HIGH-RESOLUTION ESOPHAGEAL PRESSURE TOPOGRAPHY (HREPT)
42
Therapeutic trial for diagnosing GERD
EMPIRIC PROTON-PUMP INHIBITOR
43
Can detect hiatal hernia
BARIUM RADIOGRAPHY
44
Not routinely used to diagnose GERD
BARIUM RADIOGRAPHY
45
For patients with severe, chronic GERD
nissen fundoplication
46
Implanting a ring of titanium-encased magnet at the esophagogastric junction • Helps narrow the esophagus to return to tonic or contracted state.
MAGNETIC SPHINCTER AUGMENTATION
47
Management of Barrett’s esophagus when dysplasia is present
Radiofrequency ablation [Stretta®] of the LES
48
Beneficial in patients with chronic GERD with abnormal pH or low grade erosive esophagitis
Endoscopic suturing of the LES
49
antacids indication
mild GERD
50
systemic antacids
- sodium bicarbonate - sodium citrate
51
nonsystemic antacids
- calcium carb - magnesium hydroxide, aluminum hydroxide, simethicone
52
long term use of systemic antacid causes…
electrolyte imbalance
53
anti- flatulence to decrease frequency of farting
simethicone
54
indication for antacid-alginic acid
mild GERD
55
decreases frequency of reflux
antacid-alginic acid
56
amtacids are taken with or without meals?
with meals after meals and at bedtime
57
drug interactions of antacids
- tetracycline - ferrous sulfate - isoniazid and quinolone antibiotics - sulfonylureas
58
Competitively inhibit H2 receptors in the parietal cells of the stomach to suppress secretion of gastric acid
HISTAMINE-2 RECEPTOR ANTAGONIST
59
indication of h2ra
mild to moderate gerd
60
most potent H2 blocker
famotidine
61
has little first-pass metabolism
nizatidine
62
H2 blockers in general are prone to first-pass metabolism, and thus have ___ bioavailability
low
63
standard dose of nonrx h2ra
2x daily dosing
64
↓ GERD symptoms associated with exercise
nonrx h2ra
65
has gynecomastia as se
cimetidine
66
h2ra are contraindicated to pregnant women. why?
may cross placenta
67
drug interaction of h2ra
cimetidine - theophylline - warfarin - phenytoin - nifedipine - propranolol
68
Faster action and longer DOA compared to H2 blockers
PROTON-PUMP INHIBITOR
69
indication of PPIs
moderate to severe GERD
70
Indication: o Moderate-severe GERD o Erosive esophagitis o w/ complications o NERD o Patients refractory to H2RA
PPIs
71
has little first-pass metabolism
nizatidine
72
nonrx PPI dosing
once daily dosing
73
se of PPI
- rebound hypersecretion - HA - diarrhea - naisea - abdominal pain - CAP
74
ppi that causes bronchoconstriction and should be avoided if px has asthma or copd
lansoprazole
75
long term effects of ppi
o Enteric infections (Clostridium difficile) ▪ Due to reduced gastric acidicity o **Vitamin B12 deficiency** o **Hypomagnesemia** o **Bone fracture**
76
drug interaction of PPI
- ketoconazole amd itraconazole - clopidogrel
77
Delayed release oral suspension powder packet
(Esomeprazole, pantoprazole, omeprazole)
78
Oral disintegrating tablet
(Dexlansoprazole, lansoprazole)
79
IV
(lansoprazole, esomeprazole, pantoprazole)
80
major metabolizer of CYP2C19; reduces effectivity of clopidrogel
omeprazole
81
can be given as alternative for patient on clopidrogel therapy, since it is only a minor inhibitor of CYP2C19
rabeprazole
82
when should u take ppi
Take PPI in the morning 30-60 mins. before breakfast or before the biggest meal of the day
83
For patients unable to swallow the capsules →
contents can be mixed in apple or orange juice
84
(ppi) contents can be mixed in 8.4% NaHCO3 sol.
Patients in NGT
85
Adjunct to acid suppression therapy for patients with known motility defects (Delayed gastric emptying, ↓esophageal clearance).
promotility agents
86
Dopamine antagonist
metoclopramide
87
metoclopramide SE
o EPS (Tardive dyskinesia) o Extrapyramidal symptoms (EPS) – usually used to describe symptoms of drugs that cause dopamine blocking o CNS effects (i.e. drowsiness)
88
Directly binds and stimulates muscarinic receptor → ↑ Peristalsis
betanechol
89
Not routinely recommended for GERD (more common for urinary retention)
betanechol
90
D2 receptor antagonist
domperidone
91
Has no CNS side effects, unlike metoclopramide
domperidone
92
GABA-B Agonist
baclofen
93
inhibits this signaling, preventing the relaxation of LES (it does not have a direct effect on gastric motility)
baclofen
94
Delayed gastric emptying results in an enlarged stomach (gastric distention)
baclofen
95
↓Transient LES relaxations → ↓esophageal acid exposure and the number of reflux episodes
baclofen
96
Nonabsorbable aluminum salt of sucrose octasulfate
sucralfate
97
Useful in the management of radiation esophagitis and bile or nonacid reflux GERD.
sucralfate
98
Tx of nocturnal symptoms
As needed H2RA at bedtime + PPI
99
DOC for maintenance of patients with moderate-to-severe GERD, erosive disease, or other complications
PPI
100
Endoscopy-negative GERD patients
“On-demand” or intermittent maintenance therapy
101
t or f: For GERD, clinicians use a step-down approach
t