02 gastroenterology
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Transcript of 02 gastroenterology
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Dutchess Community College EMS
Gastroenterology
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Dutchess Community College EMS
General Pathophysiology
General Risk Factors Excessive Alcohol Consumption Excessive Smoking Increased Stress Ingestion of Caustic Substances Poor Bowel Habits
Emergencies Acute emergencies usually arise from chronic
underlying problems.
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Dutchess Community College EMS
Abdominal Pain
Types Visceral Somatic Referred Hemorrhagic Non-hemorrhagic
Causes Inflammation Distention Ischemia
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Dutchess Community College EMS
General Assessment
Scene Size-up & Initial Assessment Scene clues. Identify and treat life-threatening conditions.
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Dutchess Community College EMS
General Assessment
Focused History & Physical Exam Obtain SAMPLE History. Obtain OPQRST History.
Associated symptoms Pertinent positives and negatives
Previous history of same event Nausea/ vomiting Change in bowel habits/ stool
Constipation, Diarrhea
Weight loss
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Dutchess Community College EMS
General Assessment
Physical Exam General assessment and vital signs Appearance Posture Level of consciousness Apparent state of health Skin color Vital signs Inspect, Auscultate, Percuss, Palpate, abdomen Female abdominal exam Male abdominal exam
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Dutchess Community College EMS
General Treatment
Airway and ventilatory supportMaintain an open airwayHigh flow oxygen
Circulatory supportElectrocardiogramMonitor blood pressure
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Dutchess Community College EMS
General Treatment
Pharmacological interventions Consider initiating intravenous line Avoid intervention which mask signs and
symptoms
Non-pharmacological interventions Nothing by mouth Monitor LOC Monitor vital signs Position of comfort
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Dutchess Community College EMS
General Treatment
Transport consideration Persistent pain for greater than six hours
requires transport Gentle but rapid transport
Psychological support All actions reflect a calm, caring, competent
attitude Keep patient and significant others informed of
your actions
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Dutchess Community College EMS
The Gastrointestinal System
Upper Gastrointestinal TractLower Gastrointestinal TractLiverGallbladderPancreasAppendix
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Dutchess Community College EMS
Upper GI Tract
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Dutchess Community College EMS
Signs & Symptoms General abdominal discomfort Hematemesis and melena Classic signs and symptoms of shock Changes in orthostatic vital signs
Treatment Follow general treatment guidelines.
Begin volume replacement using 2 large-bore IVs.
Differentiate life-threatening from chronic problem.
Upper Gastrointestinal Bleeding
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Dutchess Community College EMS
EsophagealAnatomy
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Dutchess Community College EMS
Causes Peptic Ulcer Disease Gastritis Rupture of Varicies Mallory-Weiss Tear Esophagitis Duodenitis
Upper Gastrointestinal Bleeding
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Dutchess Community College EMS
Peptic Ulcers
Pathophysiology Ulcerative disorder Acid-pepsin formation Loss of protective effects
Gastric mucosa Bicarbonate ions Prostoglandins
Terminology based on the portion of tract affected. Causes:
NSAID Use
Alcohol/Tobacco Use
H. pylori
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Dutchess Community College EMS
Benign Ulcer
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Dutchess Community College EMS
Stomach Ulcer with Bleeding
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Dutchess Community College EMS
Use of ASA / NSAIDS, smoking
These NSAIDs can penetrate the lining of the stomach and release substances that damage cells. NSAIDs and smoking also block natural chemicals called prostaglandins that can help repair those cells. Using NSAIDS regularly for a long time, such as for arthritis pain, especially adds to this problem.
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Dutchess Community College EMS
NSAID Erosion
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Dutchess Community College EMS
Helicobacter pylori
A bacterium called Helicobacter pylori causes most ulcers - about 80-85% of duodenal ulcers and 60-80% of gastric ulcers. The bacteria can spread into the mucus lining that usually protects the stomach and small intestine from digestive acids, damaging it in the process.
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Dutchess Community College EMS
Helicobacter PyloriInitiating Inflammation
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Dutchess Community College EMS
Peptic Ulcers
Symptoms Gnawing or burning pain In the abdomen between sternum and navel Can be a dull ache or strong hunger pains The elderly may not feel symptoms at all
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Dutchess Community College EMS
Pain from Ulcers
Gastric ulcers strike at any time of the day, but it's usually
worst after eating a meal, up to three hours later.
Duodenal ulcers typically shows up when the stomach is empty -
at night or between meals. It may last for a number of weeks and then temporarily go away. Food or antacids can often relieve this kind of pain.
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Dutchess Community College EMS
Acute Gastroenteritis
Causative organismsRotavirus, Norwalk virus, and many others
Parasites Protozoa giardia lamblia Crypto sporidium parvum Cyclosporidium cayetensis
Contracted via fecal-oral transmission, contaminated food and water
Cyclosporidium reported to be contracted by swimming in contaminated waters
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Dutchess Community College EMS
Acute Gastroenteritis
Causative organismsBacteria Escherichia coli Klebsiella pneumonia Enterobacter Campylobacter jejuni Vibrio cholera Shigella
Not part of normal intestinal flora
Salmonella Not part of normal intestinal flora
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Dutchess Community College EMS
Acute Gastroenteritis
Modes of transmissionFecal-oralIngestion of infected food or non-potable water
Susceptibility and resistanceTravelers into endemic areas are more susceptiblePopulations in disaster areas, where water supplies are contaminated, are susceptibleNative populations in endemic areas are generally resistant
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Dutchess Community College EMS
Acute Gastroenteritis
Signs & Symptoms Rapid Onset of Severe Vomiting and Diarrhea Hematemesis, Hematochezia, Melena Diffuse Abdominal Pain Classic Signs of Shock
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Dutchess Community College EMS
Gastroenteritis
Similar to Acute Gastroenteritis Long-Term Mucosal Changes or Permanent
Damage. Primarily due to microbial infection. More frequent in developing countries.
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Dutchess Community College EMS
Gastroenteritis
Patient management and protective measuresEMS personnel - do not work when ill if your job involves patient contact
Environmental health and development/ availability of clean water reservoirs, food preparation and sanitation
Disaster workers and travelers to endemic areas must be vigilant in knowing the sources of their water supplies or drink hot beverages that have been brisk-boiled or disinfected
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Dutchess Community College EMS
Gastroenteritis
Patient management and protective measuresHealth care workers treating gastroenteritis patients must be careful to avoid habits that facilitate fecal-oral/ mucous membrane transmission, observe BSI and effective hand washing
Selected organisms may be sensitive to antibiotics
Epidemic treatment is normally symptomatic
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Dutchess Community College EMS
Erosive Gastritis
LESIONS
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Dutchess Community College EMS
Esophageal Varices
Cause Increased Portal Hypertension
Chronic alcohol abuse and liver cirrhosis Ingestion of caustic substances
Result Esophagitis with erosion
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Dutchess Community College EMS
Esophageal Varices
Signs & Symptoms Hematemesis, Dysphagia Painless Bleeding Hemodynamic Instability Classic Signs of Shock
Treatment Follow General Treatment Guidelines.
Aggressive Airway Management Aggressive Fluid Resuscitation
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Dutchess Community College EMS
Varicies
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Dutchess Community College EMS
Inverted esophagus on post showing varicies
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Dutchess Community College EMS
Esophagitis
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Dutchess Community College EMS
Erosive Esophagitis
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Dutchess Community College EMS
Mallory-Weiss Tear
A tear in the lower end of the esophagus
Caused by severe vomiting.
Common in alcoholics.
May also be caused by increased pressure in the abdomen from coughing, hiatal hernia, or childbirth.
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Dutchess Community College EMS
Mallory Weiss Tear
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Dutchess Community College EMS
Lower GI Tract
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Dutchess Community College EMS
Pathophysiology Bleeding distal to the ligament of Treitz Causes
Diverticulosis Colon lesions Rectal lesions Inflammatory bowel disorder
Lower Gastrointestinal Bleeding
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Dutchess Community College EMS
Signs & Symptoms Determine acute vs. chronic. Quantity/color of blood in stool. Abdominal pain Signs of shock.
Treatment Follow general treatment guidelines.
Establish IV access with large-bore catheter(s).
Lower Gastrointestinal Bleeding
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Dutchess Community College EMS
Lesions
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Dutchess Community College EMS
Ulcerative Colitis
Pathophysiology Causes Unknown
Signs & Symptoms Abdominal Cramping Nausea, Vomiting,
Diarrhea Fever or Weight Loss
Treatment Follow general
treatment guidelines.
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Irritable Bowel Syndrome (IBS)*
Pathophysiology Patients often show:
Hypersensitivity of bowel pain receptors Hyperresponsiveness of the smooth muscle Psychiatric disorder connection
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Irritable Bowel Syndrome (IBS)*
Pathophysiology (cont’d) Hyperresponsiveness can cause spasm.
Can cause constipation and bloating or diarrhea Typically begins during childhood Can be triggered by various stimuli
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Irritable Bowel Syndrome (IBS)*
Assessment You will typically be called when the patient is
having a flare-up of symptoms.
Management Mainly supportive Assessment should include the patient’s mood.
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Dutchess Community College EMS
Crohn’s Disease
Pathophysiology Inflammatory disorder
Small bowel, Large bowel Increased suppressor T-cell activity Damages Intestinal submucosa Lesions Fissures and Fistulas Can affect the entire GI tract. Hypertrophy and fibrosis of underlying muscle.
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Dutchess Community College EMS
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Dutchess Community College EMS
Crohn’s Disease
Signs and Symptoms Difficult to differentiate.
Clinical presentations vary drastically. GI bleeding, nausea, vomiting, diarrhea. Abdominal pain/cramping, fever, weight loss.
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Dutchess Community College EMS
Crohn’s Disease
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Diverticulitis*
Pathophysiology Diverticulum: weak area in the colon that
begins to have pockets (diverticula) Diverticulosis: condition of having diverticula Diverticulitis: Inflammation of diverticuli
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Diverticulitis*
Pathophysiology A diet low in fiber creates more solid stool. If feces gets trapped in diverticula,
inflammation and infection occur and may cause:
Scarring Adhesions Fistula
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Diverticulitis*
Assessment Signs and symptoms include:
Abdominal pain, usually localized on the left lower abdomen
Classic infection signs Constipation or diarrhea
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Diverticulitis*
Management Ensure severe infection is not present. Patients may need fluids and/or dopamine. In-hospital treatment includes:
Antibiotics Liquid diet Surgery
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Dutchess Community College EMS
Bowel Obstruction
Pathophysiology Mechanical Non-mechanical Lesions Obturation of the lumen Small/ large bowel Adhesions Hernias
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Dutchess Community College EMS
Bowel Obstruction
Intussusception
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Dutchess Community College EMS
Bowel Obstruction
Volvulus
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Dutchess Community College EMS
Adhesions
Bowel Obstruction
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Dutchess Community College EMS
Bowel Obstruction
Pathophysiology Other Causes
Foreign bodies, gallstones, tumors, bowel infarction
Signs & Symptoms Decreased Appetite, Fever, Malaise Nausea and Vomiting Diffuse Visceral Pain, Abdominal Distention Signs & Symptoms of Shock
Treatment Follow general treatment guidelines.
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Dutchess Community College EMS
Accessory Organ Diseases
GI Accessory Organs Liver Gallbladder Pancreas Vermiform Appendix
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Dutchess Community College EMS
Appendicitis
Pathophysiology Inflammation of the vermiform appendix. Obstruction of appendiceal lumen Ulceration of appendiceal mucosa
Viral Bacterial
Frequently affects older children and young adults. Lack of treatment can cause rupture and
subsequent peritonitis.
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Dutchess Community College EMS
Appendicitis
Signs & Symptoms Nausea, vomiting, and low-grade fever. Pain localizes to RLQ
(McBurney’s point).
Treatment Follow
general treatment guidelines.
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Dutchess Community College EMS
Cholecystitis
Pathophysiology Gall Stones in Cystic Duct Inflammation of the Gallbladder Cholelithiasis Chronic Cholecystitis
Bacterial infection
Acalculus Cholecystitis Burns, sepsis, diabetes Multiple organ failure
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Dutchess Community College EMS
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Dutchess Community College EMS
Cholecystitis
Signs & Symptoms URQ Abdominal Pain
Murphy’s sign Nausea, Vomiting History of Cholecystitis
Treatment Follow general treatment guidelines.
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Dutchess Community College EMS
Pancreatitis
Pathophysiology Inflammation of the Pancreas
Classified as metabolic, mechanical, vascular, or infectious based on cause.
Common causes include alcohol abuse, gallstones, elevated serum lipids, or drugs.
Injury or disruption of pancreatic ducts or aciniLeaked enzymes
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Dutchess Community College EMS
Pancreatitis
Signs & Symptoms Mild Pancreatitis
Epigastric Pain, Abdominal Distention, Nausea/Vomiting
Elevated Amylase and Lipase Levels Severe Pancreatitis
Refractory Hypotensive Shock and Blood Loss Respiratory Failure
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Dutchess Community College EMS
Hepatitis
Pathophysiology Injury to Liver Cells
Typically due to inflammation or infection. Types of Hepatitis
Viral hepatitis (A, B, C, D, and E) Alcoholic hepatitis Trauma and other causes
Risk Factors
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Dutchess Community College EMS
Hepatitis
Signs & Symptoms Acute/ chronic onset URQ abdominal tenderness Loss of appetite, nausea/vomiting, weight loss, malaise Fatigue, Headache, Photophobia Clay-colored stool, jaundice, scleral icterus Pharyngitis, Cough
Treatment Follow general treatment guidelines.
Use PPE and follow BSI precautions
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Dutchess Community College EMS
HemorrhoidsPathophysiology Mass of swollen veins in anus or rectum. Increased portal vein pressure Mucosal surface
Thrombosis Infection Erosion
Signs & Symptoms Limited bright red bleeding and painful stools. Consider lower GI bleeding.
Treatment General treatment guidelines.
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Dutchess Community College EMS
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Rectal Abscess*
Pathophysiology Caused when the ducts carrying mucus to the
rectal area become blocked Allows bacteria to grow and spread to the anus
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Rectal Abscess*
Assessment Symptoms may include:
Rectal pain that increases with defecation Rectal drainage Constipation
Management Focus on keeping the patient comfortable.
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Acute Infectious Conditions*
GI infection occurs when contaminated food is ingested or when the GI tract ruptures. People that have a difficulty combating
infection: Immunocompromised Very old Very young
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Acute Infectious Conditions*
Damage may allow contents to be released into surrounding tissues. The body will begin to defend itself. If the infection continues, it may leave the GI
system and enter the bloodstream. This is known as sepsis.
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Hernia*
Pathophysiology Organ/structure protrusion into adjacent cavity To check for an inguinal hernia:
Place fingers on lower abdomen. Instruct patient to cough. Weakness in abdominal wall will present as bulging.
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Hernia*
Pathophysiology (cont’d) Caused by any condition that causes intra-
abdominal pressure: Obesity Standing for long periods Straining during bowel movements Chronic obstructive pulmonary disease
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Hernia*Assessment Four types
Reducible Incarcerated Strangulated Incisional
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Hernia*
Management Focus on supportive measures. Pain management Assess for sepsis
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Rectal Foreign Body Obstruction*
Pathophysiology Originates from upper GI tract or anal insertion
Assessment Presents with sudden rectal pain with
defecation Determine if the rectum has been perforated.
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Rectal Foreign Body Obstruction*
Management Do NOT attempt to remove object. Prehospital management should be limited to
patient comfort. Treat with analgesia if indicated. Closely monitor vital signs.
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Mesenteric Ischemia*
Pathophysiology Interruption of the blood supply to the
mesentery Can be caused by:
Arterial embolism Thrombosis Profound vasospasm
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Mesenteric Ischemia*
Assessment Gradual or sudden onset Symptoms include:
Severe pain with ill-defined location Nausea, vomiting, and diarrhea Possible blood in stool
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Mesenteric Ischemia*
Management Patients require rapid transportation. Monitor closely. Check vitals for signs of sepsis. Fluid resuscitation in cases of shock Give analgesics as needed.
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Gastrointestinal Conditions in Pediatric Patients*
GI complaints are common in children. Prolonged vomiting, diarrhea, or bleeding can
lead to severe changes in sodium and potassium levels.
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Gastrointestinal Conditions in Pediatric Patients*
Congenital GI anomalies Gastrochisis:
portions of the GI system lie outside the abdominal wall
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Gastrointestinal Conditions in Pediatric Patients*
Congenital GI anomalies (cont’d) Intestinal
malrotation: intestines rotated incorrectly during development
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Gastrointestinal Conditions in Pediatric Patients*
Congenital GI anomalies (cont’d) Pyloric stenosis:
hypertrophy of the pyloric sphincter of the stomach
GI bleeding can occur in children.
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Gastrointestinal Conditions in Pediatric Patients*
Careful assessment is critical. Check skin turgor, pulse rate, and peripheral
pulse status. Severe fluid loss may cause diminished LOC.
Standard fluid resuscitation: 20 mL/kg isotonic fluid Get a detailed medical history from the parent.
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Gastrointestinal Conditions in Pediatric Patients*
Patients may have a gastrostomy tube. If dislodged, place a sterile dressing over it. If clogged, talk about ways to clear the tube. If the blockage cannot be easily managed, turn
off the feeding, clamp the tube, and transport.
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Gastrointestinal Conditions in Older Adults*
GI diseases more prevalent in older adults
Abdominal pain can also be a symptom of a cardiac condition. Obtain a thorough history and physical exam. Consider a 12-lead ECG. Monitor vital signs.
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Prevention Strategies*Many behaviors can prevent or limit severity of GI diseases.
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Prevention Strategies*
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Dutchess Community College EMS
Gastroenterology Review
General Pathophysiology, Assessment, and Management
Specific Illnesses Upper Gastrointestinal Diseases Lower Gastrointestinal Diseases Accessory Organ Diseases
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Dutchess Community College EMS
QUESTIONS ?