Right ventricular myocardial infarction resident survival guide

Jump to navigation Jump to search
Right ventricular myocardial infarctiona
Resident Survival Guide

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Mitra Chitsazan, M.D.[2] Mandana Chitsazan, M.D. [3]


RV infarction is a form of ST elevation myocardial infarction (STEMI) and is characterized by the presence of symptoms of myocardial ischemia associated with persistent ST elevation on electrocardiogram in right-sided lead V4 (V4R), and elevated cardiac enzymes, hypotension, signs of elevated right heart filling pressures (elevated jugular venous pressure) in the absence of signs of elevated left heart filling pressures (clear lung fields). Nitrates, diuretics and beta-blockers should not be administered to the patient with an RV MI.


Life Threatening Causes

STEMI is a life-threatening condition and must be treated as such irrespective of the underlying cause.

Common Causes


Shown below is an algorithm summarizing the diagnosis of Right ventricular myocardial infarction(RV MI) according to the American College of Cardiology and European Society of Cardiology guidelines. [1] [2]

All patients with acute inferior wall myocardial infarction (ST elevation in leads II, III, aVF)
Obtain right-sided precordial leads
>= 1mm ST elevation in lead V4R
Highly suggestive of RVMI
Hemodynamic study

❑ Classic triad of:

❑ Elevated JVP
❑ Clear Lungs

Kussmaul sign
Pulsus paradoxus
Tricuspid regurgitation murmur
Atrioventrcicular dissociation
❑ Vagal symptoms:


❑ RV dilatation
❑ Depressed RV systolic function
❑ RV wall akinesia or dyskinesia
❑ RA enlargement
❑ Elevated pulmonary pressures
Pulmonary regurgitation
Tricuspid regurgitation

❑ Increased right atrial pressure
Gold standard diagnostic modality

❑ In the majority of RVMI:

❑ The culprit artery: Proximal Right Coronary Artery

❑ Occasionally:

❑ The culprit artery: Left circumflex artery or left anterior descending artery

❑ Hemodynamically significant RVMI:

❑ Increased RAP>10 mmHg
❑ RAP to PCWP ratio >0.8 (normal<0.6)
❑ RAP within 5 mmHg of the PCWP
❑ Reduced cardiac index
❑ Disproportionate elevation of right-sided filling pressures: Hallmark of RVMI

❑ In concomitant LV dysfunction:

❑ RAP to PCWP ratio can change

❑ Additional hemodynamic changes:

❑ Prominent Y-descend of the RAP
❑ Drop of the systemic arterial pressure >10 mmHg with inspiration
❑ "Dip and plateau" morphology and equalization of the diastolic filling pressures


Shown below is an algorithm summarizing the treatment of Right ventricular myocardial infarction according to the American College of Cardiology and European Society of Cardiology guidelines. [1] [2]

Therapuetic Considerations in Right Ventriculay Myocardial Infarction (RV MI)
Maintenance of RV preload
Decreasing RV afterload
Restoring Rate/Rhythm and AV synchrony
Inotropic support
Avoidance of preload-reducing agents, such as:

In patients with hypotension (without pulmonary congestion):

❑ Intravenous administration of Fluids (N/S 0.9% at 40mL/min for up to 2L, to maintain CVP <15 mmHg and PCWP between 18-24 mmHg)
Systemic or pulmonary vasodilators:
❑ Inhaled nitric oxide
In patients with bradyarrhthmias:

In patients with atrioventricular block:

❑ Temporary dual-chamber pacemaker
In patients with refractory hypotension:
Dobutamine (along with fluids)
❑ Other inotropes:


May be needed in patients with cardiogenic shock secondary to RV MI:
❑ Direct RV support
❑ Indirect RV support
❑ Biventricular support




  1. 1.0 1.1 "Correction". Circulation. 131 (24): e535. 2015. doi:10.1161/CIR.0000000000000219. PMID 26078378.
  2. 2.0 2.1 Ibanez B, James S, Agewall S, Antunes MJ, Bucciarelli-Ducci C, Bueno H; et al. (2018). "2017 ESC Guidelines for the management of acute myocardial infarction in patients presenting with ST-segment elevation: The Task Force for the management of acute myocardial infarction in patients presenting with ST-segment elevation of the European Society of Cardiology (ESC)". Eur Heart J. 39 (2): 119–177. doi:10.1093/eurheartj/ehx393. PMID 28886621.

Template:WikiDoc Sources