Massive Pulmonary Embolism

This case is written by Dr. Kyla Caners. She is a staff emergency physician in Hamilton, Ontario and the Simulation Director of McMaster University’s FRCP-EM program. She is also one of the Editors-in-Chief here at EmSimCases.

Why it Matters

The management of massive pulmonary embolism is one that requires rapid action and decisive decision-making, often based on less information than one would like. This case highlights several key features of the management of a massive PE, including:

  • The importance of recognizing the signs of PE and using basic bedside investigations to aid in diagnosis when a patient is too unstable for confirmatory CT
  • The need to maintain quality ACLS care when a patient arrests, regardless of arrest etiology
  • The use of thrombolytics during cardiac arrest to treat a suspected pulmonary embolism

Clinical Vignette

A 46 year old male presents to the ED complaining of shortness of breath and pleuritic chest pain. He broke his ankle a week ago and has been in a cast since. He was just discharged home after operative repair 2 days ago.

Case Summary

A 46 year old male with a cast on his left leg from a bad ankle fracture presents to the ED complaining of pleuritic chest pain and shortness of breath. The team will take a history and start workup when the patient will suddenly state he’s “not feeling well” and then arrest. The team will perform ACLS consistent with the PEA algorithm and should consider IV thrombolytics. If IV thrombolytics are administered, the patient will have ROSC.

Download the case here: Pulmonary Embolism

ECG for the case found here:

ecg-massive-pte

(ECG source: http://cdn.lifeinthefastlane.com/wp-content/uploads/2011/12/ECG-Massive-PTE.jpg)

Post-intubation CXR for the case found here:

Post-Intubation

Post Intubation

(CXR source: https://emcow.files.wordpress.com/2012/11/normal-intubation2.jpg)

Cardiac U/S showing right heart strain found here:

(U/S courtesy of the McMaster PoCUS Subspecialty Training Program)

Cardiac U/S showing cardiac standstill found here:

(U/S courtesy of the McMaster PoCUS Subspecialty Training Program)

VSA Megacode

This case is written by Dr. Cheryl ffrench, a staff Emergency Physician at the Health Sciences Centre in Winnipeg. She is the Associate Program Director and the Director of Simulation for the University of Manitoba’s FRCP-EM residency program; she is also on the Advisory Board of emsimcases.com.

Why it Matters

Leading a resuscitation is a core skill of an Emergency Physician. More often than not, we know very little about the patient’s history before orchestrating a team of nurses, respiratory technicians, residents and other team members to provide resuscitative care. Assessment of the cardiac rhythm and pulse allows us to start with ACLS algorithms in order to hopefully obtain return of spontaneous circulation (ROSC), initiate post-ROSC care and arrange for the appropriate disposition of the patient This case, which is geared toward junior learners, highlights the following:

  • The importance of resource allocation during a prolonged resuscitation
  • Managing the resuscitation team, ensuring effective communication and recognizing compression fatigue.
  • Providing high quality ACLS and post-ROSC care
  • Recognizing STEMI as the cause of the cardiac arrest and initiating disposition for percutaneous coronary intervention (PCI)

Clinical Vignette

A 54-year-old male police officer presents to the ED with chest pain. He played his normal weekend hockey game about two hours ago. He has been having retrosternal chest pain since the game ended. It improved with rest, but has not resolved completely. It is worse after walking into the department. He now feels dizzy, short of breath, and nauseous.

Case Summary

A 54-year-old male police officer presents to the ED complaining of chest pain for two hours that started after his weekend hockey game. He is feeling dizzy and short of breath upon presentation. He will have a VT arrest as he is placed on the monitor. He will require two shocks and rounds of CPR before he has ROSC. He will then loose his pulse again while the team is trying to initiate post-arrest care; this will happen several times. Finally, the team will maintain ROSC. When an ECG is performed, it is revealed that the patient has a STEMI and the team will need to call for emergent PCI.

Download the case here: VSA Megacode

ECG for the case found here:

anterolateral

(ECG source: http://cdn.lifeinthefastlane.com/wp-content/uploads/2011/10/anterolateral.jpg)

Post Intubation-CXR for the case found here:

normal-intubation2

(CXR source: https://emcow.files.wordpress.com/2012/11/normal-intubation2.jpg)

Ventricular Tachycardia due to Arrhythmogenic Right Ventricular Dysplasia (ARVD)

This case was written by Dr. Martin Kuuskne from McGill University. Dr. Kuuskne is a PGY4 Emergency Medicine resident and one of the editors-in-chief at EMSimCases.

Why it Matters

Arrhythmogenic Right Ventricular Dysplasia (ARVD) is the second most common cause of sudden cardiac death in young people, after hypertrophic obstructive cardiomyopathy (HOCM). This case highlights three important aspects of the management of an arrhythmia in a young, previously healthy adult:

  • The use of suitable antiarrhythmic agents in the setting of a stable, wide-complex tachycardia (WCT)
  • The recognition of deterioration in a patient with a WCT and a pulse
  • The difference between synchronized cardioversion and defibrillation and their respective indications during different ACLS algorithms

Clinical Vignette

You are working an evening shift in a community hospital emergency department. A 26-year-old man presents to the ED by ambulance after an episode of syncope while playing soccer.

Case Summary

A 26-year-old man who suffered a syncopal event while playing soccer presents to the emergency department with a stable wide-complex tachycardia (WCT). The patient must be treated with an antiarrhythmic medication or by synchronized cardioversion. The patient later deteriorates into an unstable WCT and then ventricular fibrillation requiring advanced cardiac life support (ACLS) and defibrillation.

Download the case here: ARVD Case

First ECG for case found here:

RVOT V-Tach

Right Ventricular Outflow Tract Ventricular Tachycardia

Second ECG for case found here:

ARVD

ARVD  – Notice the Epsilon waves, right axis deviation and  t-wave inversions.

(ECG source: http://cdn.lifeinthefastlane.com/wp-content/uploads/2010/12/ECG-exigency-008_3.jpg)

CXR for case found here:

CXR

(CXR souce: http://radiopaedia.org/images/220869)