ESOPHAGEAL MOTILITY AND MANOMETRY · Bredenoord AJ, Fox M, Kahrilas JE et al. Chicago...
Transcript of ESOPHAGEAL MOTILITY AND MANOMETRY · Bredenoord AJ, Fox M, Kahrilas JE et al. Chicago...
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ESOPHAGEAL
MOTILITY
AND
MANOMETRY
Overlook Medical Center The Digestive Center
Vicky Schmidt, BSN RN CGRN
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Motility of the Esophagus
Objectives:
• Describe the anatomy and physiology of
the esophagus.
• Explain normal motility.
• Review number of conditions of the
esophagus and their pathophysiology.
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Anatomy & Physiology
Esophagus • Third organ of digestion
• Channel for food
• Hollow muscular tube
– Length 24/25cm, 10/11in (adult)
– Width 2-3 cm, 1in
3 Layers
Mucosa, Submucosa, Muscularis
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Mucosa Submucosa Muscularis
Squamous epithelium Connective tissue Inner layer of circular & outer layer of longitudinal muscle
Lamina propria Blood vessels Auerbach’s Plexus
Muscularis mucosa Nerve fibers Mucous glands
Connects mouth & stomach
Lower end passes through the diaphragm
Sphincters
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Upper Esophageal Sphincter UES
Lower Esophageal Sphincter LES
Hypopharyngeal sphincter Cardiac sphincter
Between pharynx and esophagus Between esophagus and stomach
Closed – keeps air out of esophagus Controls passage of food into stomach 2-4 cm in length
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Function of Esophagus
Conduction of food
• via peristalsis
Primary peristalsis
• initiated by swallowing
Secondary peristalsis
• begins in hypopharynx; it is caused by esophageal distention
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Muscles of Esophagus
• Proximal – Striated – 5%
• Middle – Striated & Smooth – 35/40%
• Distal – Smooth – 50/60%
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Pathophysiology
Disorders
of the
Esophagus
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GERD VARICIES TUMORS
DIVERTICULA STRICTURES
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Common Symptoms of GERD • Dyspepsia
• Heartburn and regurgitation
• Dysphagia
• Odynophagia
• Bleeding from erosions
• Esophagitis
• Asthma
• Aspiration pneumonia
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Treatment of GERD
Behavior Modifications
Dietary adjustments
Weight loss
Elevation of head of bed
Smoking Cessation
Avoidance of food or drink prior to sleep
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Varicies
• Most commonly found in:
distal esophagus
stomach
hemorrhoidal plexus
Related to portal hypertension associated with:
alcoholic cirrhosis portal vein thrombosis
chronic hepatitis congenital disorders
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Treatment
Historically treatment of choice for acute bleed – injection of sclerosing agent.
Complications:
Inflammation
Perforation
Stricture
Ulceration
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Todays treatment
• Esophageal variceal ligation (EVL)
endoscopic placement of O-rings on the
varicies
Last resort – balloon tamponade
Prognosis is poor with acute variceal bleeding
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Tumors • Benign or cancerous
• Squamous cell carcinoma – most common
• Adenocarcinoma
– 5% of Barrett’s Esophagus patients
Most common indication:
dysphagia
odynophagia
Other symptoms:
Anorexia, weight loss, anemia, hoarseness
& cough.
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Diverticulum • Out pouching of one or more layers of the
wall of the esophagus
• Result from a motor abnormality
Zenker’s – immediately above UES
Traction - near midpoint of esophagus
Epiphrenic – immediately above LES
Intramural – along body
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STRICTURES
• Usually at the lower end of
esophagus.
-Circumferential or not
circumferential
-Result of caustic injuries,
candidiasis, or severe
reflux
Clinical presentation:
- Progressive dysphagia
Treatment:
Dilation
Complication:
Perforation is the primary – pain after dilation
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Esophageal Motility Disorders
o Primary
o Secondary
o Nonspecific
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Primary Disorders
• Dysfunction limited to the esophagus:
– Achalasia
– Diffuse Esophageal Spasm
– Hypertensive LES
– Nutcracker Esophagus (Hypertensive peristalsis)
– Jackhammer Esophagus (Hypercontractile
esophagus)
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Achalasia • “failure to relax”
• Poorly relaxing LES
• Cause – unknown.
Hereditary, degenerative, autoimmune and infectious factors are possible causes.
• Symptoms: Dysphagia, regurgitation, heartburn, chest pain, coughing, choking, aspiration pneumonia, and weight loss.
• All patients have at least 2 manometric abnormalities:
– Abnormal LES residual pressure & no normal peristalsis.
Achalasia is never cured. Treatment is directed to reduce the pressure across the LES: pneumatic dilation,
Heller Myotomy, and drug therapy
(botulinum toxin, CCC, nitrates)
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Secondary Esophageal Motility
Disorders
• Collagen – Vascular disease - scleroderma
• Endocrine & Metobolic disorders – diabetes
• Neuromusclular diseases – myasthenia gravis,
MS, Parkinson’s
• Chronic idiopathic intestinal pseudo-obstruction
• Chagas’ disease
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Nonspecific esophageal motility
disorders
• The symptoms of the swallowing disorder
are present but the pattern of the
dysfunction does not fit into the other
categories.
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Esophageal Manometry Objectives:
• Define Manometry
• Describe the equipment and techniques usually used in manometry studies
• Review indications and contraindications for this procedure involving the esophagus and stomach.
• Review tracings of common abnormal findings
• Review disorders diagnosed using esophageal manometry
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Manometry
• Detects esophageal motility abnormalities.
• Assessments for anti-reflux surgery.
• Measures intraluminal pressure and
coordination of esophagus muscles.
• Function of UES & LES and the
esophageal body.
• Location of proximal border of LES
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Equipment
Esophageal catheter
• Water perfusion
• Solid State
– Pressure Sensor
• Traditional 4-5 sensors
• HRM catheter 30 sensors
(entire length of the
esophagus)
Systems
• Infusion (water
perfusion)
• Transducers
• Computer
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Manometry Catheter
Water Perfusion Solid State Solid state High Resolution
• Water perfusion catheter • Pump needed • Less expensive • Graph display only
• 5 sensors • No pump needed • More expensive • HLD of catheter • Longer acquisition time • Pull through needed • May have more discomfort • Graph only
• 30 Sensors • No pump needed • Most expensive • HLD of catheter • Shorter acquisition time • No pull through needed • Less discomfort • High Resolution display • & graph display
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Water Perfusion Catheter
and infusion pump
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Solid State Catheter
5 sensors 30 sensors
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Normal esophageal motility
Conventional Manometry tracing
GI Motility online (May 2006) | doi:10.1038/gimo30
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Normal Esophageal Manometry
11/23/2015
30
GI Motility online (May 2006) | doi:10.1038/gimo30
GI Motility online (May 2006) | doi:10.1038/gimo30
GI Motility online (May 2006) | doi:10.1038/gimo30GI Motility online (May 2006) | doi:10.1038/gimo30
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High Resolution Esophageal
Manometry
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Achalasia
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Achalasia
Achalasia – conventional
Manomometry
Barium Swallow
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Achalasia • Progressive dysphagia for solids & liquids
-weight loss, nocturnal regurgitation and
pulmonary symptoms
Why: Failure of the LES to relax
1. Hypertensive LES sphincter with
incomplete/no sphincter relaxation.
2. Absent peristalsis in the body
3. Increase in intraesophageal baseline pressure
4. Radiology finings show Bird’s Beak image
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Achalasia
• Meaning- “failure to relax”
• Poorly relaxing LES
• Cause – unknown.
Hereditary, degenerative, autoimmune and infectious factors are possible causes.
• Symptoms: Dysphagia, regurgitation, heartburn, chest pain, coughing, choking, aspiration pneumonia, and wgt. loss.
• All patients have at least 2 manometric abnormalities:
– Abnormal LES residual pressure & no normal peristalsis.
Achalasia is never cured. Treatment is directed to reduce the pressure across the LES: pneumatic dilation,
Heller Myotomy, and drug therapy
(botulinum toxin, CCC, nitrates
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Diffuse Esophageal Spasm (DES)
Characterized by chest pain and dysphagia
1. High amplitude contractions or prolonged
contractions.
2. Simultaneous contractions or repetitive
contractions along with intermittent
normal peristalsis.
3. Simultaneous contractions seen in
greater that 10% of wet swallows.
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Connective Tissue Disease as in
Scleroderma • Normal peristalsis occurs in the proximal
skeletal muscles in the upper third of the
esophagus.
• Affects the smooth muscle of the
esophagus creating aperistalsis
• LES Pressure is decreased or absent.
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Nutcracker esophagus
Peristalsis with high-pressure esophageal contractions exceeding 180 mmHg ( greater than 2 X’s the normal range) and contractile waves with a long duration exceeding 6 sec
Peristalsis is normal in sequence
Elevated LES pressures
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Nonspecific Esophageal Motor
Disorder (NEMD) • Motor disorders that do not fall into other
categories
• Decreased or low amplitude that equal weak contractions
• Decreased peristalsis, peristalsis of prolonged duration, or retrograde peristalsis.
• Incomplete LES relaxation
• Increase number in repetitive contractions.
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Esophageal Manometry procedure
• NPO
• Current medical history & physical
• Procedural consent
• Adults usually performed without sedation,
may interfere with swallowing a&
esophageal motility. Children may require
sedation.
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procedure - continued
• Nitrates, calcium channel blockers,
anticholinergics, and promotility agents can
effect normal esophageal function
• Catheter inserted nasally but can be placed
orally.
• Topical anesthetic may be used for comfort.
• Patient seated or left lateral position
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prodedure - continued
• When catheter is in back of throat, chin lowered to chest & swallow. Sips of water through a straw will be helpful in advancing catheter through LES into stomach (approx. 60 cm).Patient lays supine or left lateral.
• Check placement of catheter by asking patient to take a deep breath. There will be an increase in pressure noted in the recording.
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Performing the Motility Study
• Three Parts:
– Lower Esophageal Sphincter (LES) Study
– Esophageal Body Study
– Upper Esophageal Study (UES) Study
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LES Study
Two parts:
LES pressure and location
LES relaxation
Parameters measured:
1. Resting pressure of the LES
2. Relaxation of the LES
3. Length of the LES
4. Locate proximal border of LES
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The Esophageal Body Study
Determines the contractile response of the
muscles during swallowing.
Distal catheter is placed 3 cm above the
proximal border of the LES (conventional )
• 10 wet swallows are given with
– 5 ml of room temperature water
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UES Study
Measures:
• Resting pressure
• Relaxation
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Chicago Classification • Developed to facilitate the interpretation of
high resolution esophageal pressure topography (EPT) studies.
• Initially proposed based on the analysis of clinical studies performed at Northwestern University, so subsequently named the Chicago Classification of esophageal motility disorders.
• Updated periodically by the international working group to incorporate ongoing clinical and research experience.
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Contraindications • Patients with an inability to tolerate nasal
intubation
• Patients with significant bleeding disorders
• As the initial test for chest pain.
• Uncooperative patient, cardiac instability, recent gastric surgery, severe esophageal ulcers, known esophageal obstruction, or large diverticulum.
• Patients who have received sedation or narcotics.
Complications:
rare but aspiration can occur
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References
Bredenoord AJ, Fox M, Kahrilas JE et al. Chicago classification criteria of esophageal motility disorders
defined in high resolution esophageal motility disorders defined in high resolution esophageal pressure
topography. Neurogastroenterology & Motility (2012)24 Suppl.1),57-65.
Carlson DA, Pandolfino JE. High-Resolution Manometry in Clinical Practice. Gastroenterology &
Hepatology. 2015;11(6)374-383.
Society of Gastroenterology Nurses and Associates, Inc. (2013). Manometry. Nancy O’Connor,
Gastroenterology Nursing A Core Curriculum 5th Edition (337-350). The Society of Gastroenterology Nurses
and Associates, Inc.
Society of Gastroenterology Nurses and Associates, Inc.(2011).Anatomy and Physiology/Non-Endoscopic GI
Procedures and Manometry/Motility. GI/Endoscopy Nursing Review: Certification Study Manual (46-
47;233-239)
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