EMS Medical Terminology - Mallory-Weiss Syndrome

Mallory-Weiss Syndrome is a condition characterized by a tear in the mucous membrane of the lower esophagus or upper stomach, typically caused by severe vomiting or retching. It is an example of an eponymous medical term.

Mallory-Weiss Syndrome was first described in 1929 by George Kenneth Mallory and Soma Weiss, two American physicians at Boston City Hospital. They documented the condition in patients who had experienced upper GI bleeding following severe vomiting. 

Their work highlighted the mucosal tears at the gastroesophageal junction and led to the eponymous naming of the syndrome.

Unlike Boerhaave Syndrome, where the esophagus ruptures completely, Mallory-Weiss Syndrome involves only a partial tear of the mucosal layer. 

This condition is associated with upper gastrointestinal (GI) bleeding and is often self-limiting but can occasionally lead to significant hemorrhage.

Causes and Pathophysiology

Triggered by Severe Vomiting: The syndrome often occurs after repeated vomiting or retching episodes, usually related to alcohol intoxication, eating disorders, or acute gastroenteritis.

Other Causes: Coughing, lifting heavy objects, trauma, convulsions, or anything that increases intra-abdominal pressure.

Pathophysiology: The increased pressure from vomiting causes a longitudinal tear at the gastroesophageal junction, leading to bleeding.

Signs and Symptoms

Patients with Mallory-Weiss syndrome may present with:

• Hematemesis: Vomiting of bright red blood or "coffee-ground" emesis. A hallmark symptom.
• Melena: Black, tarry stools due to digested blood.
• Epigastric or Retrosternal Pain: Pain located in the upper abdomen or chest, which may be mistaken for other conditions like myocardial infarction.
• Signs of Hypovolemia: If bleeding is severe, look for signs such as dizziness, hypotension, pallor, and tachycardia.
• History of Severe Vomiting: Often after binge drinking or an illness causing repeated retching.

EMS Recognition and Prehospital Treatment

Patient Assessment Priorities:

• History Taking: Ask about recent vomiting, alcohol use, or illnesses that might have led to repeated retching.

Inquire about the color and amount of vomitus. Bright red blood is more suggestive of active bleeding, while coffee-ground emesis suggests older blood.

Determine any history of GI bleeding or relevant medical conditions (e.g., peptic ulcer disease, cirrhosis).

• Physical Examination: Assess for signs of hypovolemic shock: tachycardia, hypotension, altered mental status, and pallor.

Perform an abdominal exam to check for tenderness, guarding, or distension.

Check for melena, if possible.

• Differential Diagnosis: Always differentiate MWS from other causes of hematemesis or epigastric pain:

• Peptic Ulcer Disease
• Esophageal Varices (often linked to liver disease)
• Gastric Ulcers or Malignancies
• Boerhaave Syndrome

Patient Management Priorities:

• Airway Management: Ensure the airway is clear. Patients actively vomiting blood are at risk of aspiration.

Position the patient to prevent aspiration (e.g., left lateral recumbent position).

• Circulatory Support: Establish IV access and administer IV fluids (normal saline or lactated Ringer’s) if the patient shows signs of shock.

Monitor for worsening hemodynamic instability.

• Minimize Further Trauma: Advise the patient to avoid any further vomiting, coughing, or retching as it can exacerbate the tear.

Keep the patient NPO (nothing by mouth) to prevent further irritation.

Treat Nausea and Vomiting: If protocols allow, consider administering antiemetics (e.g., ondansetron) via IV to prevent further vomiting, which could worsen the tear.

• Oxygen Therapy: Administer oxygen if the patient has signs of hypoxemia or shock.

• Monitor: Continuously monitor vital signs, including heart rate, blood pressure, and mental status.

• Rapid Transport: Rapid transport to a hospital with endoscopy capabilities is crucial, as definitive diagnosis and management (e.g., endoscopic hemostasis) often require specialist care.

Key Considerations for EMS

• Monitor for Signs of Shock: Patients can quickly decompensate, especially if bleeding is significant.

• Avoid Overly Aggressive Fluid Resuscitation: While fluids are necessary to stabilize blood pressure, overloading can increase bleeding.

• Rapid Transport to Definitive Care: Most Mallory-Weiss tears are diagnosed and treated via endoscopy.

Further Reading:

Alexander, M. & Belle, R. (2017) Advanced EMT: A Clinical Reasoning Approach (2nd Ed). Hoboken, New Jersey: Pearson Education

Bledsoe, B. E., Cherry, R. A. & Porter, R. S (2023) Paramedic Care: Principles and Practice (6th Ed) Boston, Massachusetts: Pearson

Brown, C. A. (2022) Walls Manual of Emergency Airway Management (5th Ed). Philadelphia, Pennsylvania: Lippincott, Williams & Wilkins.

Mistovich, J. J. & Karren, K. J. (2014) Prehospital Emergency Care (11th Ed). Hoboken, New Jersey: Pearson Education

Peate, I. & Sawyer, S (2024) Fundamentals of Applied Pathophysiology for Paramedics. Hoboken, New Jersey:  Wiley Blackwell

Rawla, P., Devasahayam, J. (2023) Mallory-Weiss Syndrome. StatPearls  Treasure Island, Florida: StatPearls. Accessed September 20, 2024

Turner, A. R., Collier, S. A., & Turner, S. D. (2023) Boerhaave Syndrome. Treasure Island, Florida: StatPearls. Accessed September 14, 2024

EMS Medical Terminology - Mackler’s Triad

Mackler’s Triad is a clinical diagnostic tool associated with spontaneous esophageal rupture, also known as Boerhaave Syndrome. It is an example of an eponymous medical term.

It includes three key symptoms:

• Vomiting: Usually forceful and occurs before the rupture.

• Sudden Onset Chest Pain: Sudden onset after vomiting.

• Subcutaneous Emphysema: Air trapped under the skin, often detected around the neck or chest, creating a crackling sensation upon palpation (due to air leaking from the esophagus).

EMS providers should be aware that Boerhaave Syndrome is a life-threatening condition that requires immediate medical intervention. 

Early recognition of the symptoms in Mackler’s Triad is critical, as delayed diagnosis and treatment significantly increase the risk of morbidity and mortality.

Key Points for EMS Providers:

High Suspicion Following Forceful Vomiting: If a patient presents with intense chest pain after vomiting, suspect an esophageal rupture.

Subcutaneous Emphysema: Feel for air under the skin, especially in the neck and chest areas.

Need For Rapid Transport: Esophageal ruptures require surgical intervention and antibiotics to prevent fatal infections such as mediastinitis (infection in the chest cavity).

Stabilization: Manage the airway, ensure the patient is NPO (nothing by mouth), administer IV fluids if necessary, and provide pain control.

Who Discovered This?

Dr. Sydney S. Mackler was an American physician and surgeon who first described the triad in 1952. He made significant contributions to understanding and diagnosing Boerhaave Syndrome. 

The triad is named after him due to his work linking these three symptoms to spontaneous esophageal rupture, helping to guide clinicians in making this often elusive diagnosis.

Further Reading:

Alexander, M. & Belle, R. (2017) Advanced EMT: A Clinical Reasoning Approach (2nd Ed). Hoboken, New Jersey: Pearson Education

Bledsoe, B. E., Cherry, R. A. & Porter, R. S (2023) Paramedic Care: Principles and Practice (6th Ed) Boston, Massachusetts: Pearson

Loftus, I. A., Umana, E. E., Scholtz, I. P., & McElwee D. (2023) Mackler's Triad: An Evolving Case of Boerhaave Syndrome in the Emergency Department. Cureus 15 (4): e37978. Accessed September 16, 2024

Mistovich, J. J. & Karren, K. J. (2014) Prehospital Emergency Care (11th Ed). Hoboken, New Jersey: Pearson Education

Peate, I. & Sawyer, S (2024) Fundamentals of Applied Pathophysiology for Paramedics. Hoboken, New Jersey:  Wiley Blackwell

Turner, A. R., Collier, S. A., & Turner, S. D. (2023) Boerhaave Syndrome. Treasure Island, Florida: StatPearls. Accessed September 14, 2024

EMS Gastrointestinal Emergencies - Patient Assessment

EMS Providers should be prepared to recognize and respond to gastrointestinal (GI) emergencies, as they are relatively common and can range from mild to life-threatening. Here are some key points and examples of gastrointestinal emergencies that EMTs need to be aware of:

1. Signs and Symptoms: Be familiar with the common signs and symptoms of gastrointestinal emergencies, which may include abdominal pain, nausea, vomiting, diarrhea, constipation, blood in vomit or stool, and abdominal distension.

2. Dehydration: Many GI conditions can lead to dehydration due to fluid loss from vomiting or diarrhea. EMTs should be skilled in assessing a patient's hydration status by checking vital signs (e.g., blood pressure, pulse, skin condition) and mucous membrane moisture.

3. Abdominal Pain Assessment: Learn how to perform a thorough abdominal pain assessment, which includes identifying the location, intensity, and radiation of pain, as well as any aggravating or alleviating factors.

    -  Visceral pain originates from internal organs and is often described as a diffuse, deep, and aching sensation.

    -  Parietal pain originates from the parietal peritoneum and is typically sharp, well-localized, and easier to identify.

4. Gastrointestinal Bleeding: Understand the signs of gastrointestinal bleeding, such as hematemesis (vomiting blood), melena (black, tarry stools), and hematochezia (bright red blood in stool). Be prepared to manage bleeding and provide appropriate interventions.

5. Infection Control: Gastrointestinal emergencies can often be related to infectious causes. EMTs should practice strict infection control measures to prevent the spread of infection, including wearing appropriate personal protective equipment (PPE).

6. Medication Allergies: Ask about medication allergies or intolerances, as patients with gastrointestinal conditions may be taking medications or have allergies to specific drugs.

7. Abdominal Trauma: Consider the possibility of trauma, especially in cases of severe abdominal pain. Assess for signs of external trauma and be prepared to manage accordingly.

8. Patient History: Obtain a detailed patient history, including any pre-existing gastrointestinal conditions, previous surgeries, and current medications.

9. Vital Signs: Monitor vital signs regularly, paying close attention to changes in blood pressure, heart rate, and respiratory rate. These can indicate the severity of the condition.

10. Transport and Communication: Determine the need for transport to a medical facility based on the severity of the condition. Communicate effectively with higher-level medical providers to provide a smooth transition of care.

11. Patient Comfort: Help alleviate discomfort and anxiety in patients with gastrointestinal emergencies. Position the patient comfortably and provide reassurance.

12. Documentation: Maintain accurate patient care documentation, including the patient's history, assessment findings, interventions performed, and the patient's response to treatment.

EMS Providers should perform a thorough patient assessment, obtain a medical history, and note any pre-existing gastrointestinal conditions. 

In cases of GI bleeding or severe abdominal pain, initiate prompt transport to a healthcare facility. Monitoring vital signs, assessing for signs of shock, and providing appropriate interventions such as intravenous fluids can be life-saving.