Related Experiment Video
Updated: Jul 26, 2025
07:44
A Porcine Model of Acute Autologous Pulmonary Embolism
Published on: September 6, 2024
456
Reverse McConnell's: A Sign of Acute Pulmonary Embolism
Andrew Sagalov1, Mukul Bhattarai1, Ashley Eggert1
1Southern Illinois University School of Medicine, Springfield, IL, USA.
Clinical Medicine Insights. Cardiology
|June 14, 2023
Summary
McConnell
Area of Science:
- Cardiology
- Echocardiography
- Pulmonary Embolism
Background:
- Pulmonary embolism (PE) can cause right ventricular (RV) dysfunction.
- McConnell's sign, characterized by RV mid-free wall akinesia with normal apical motion, is an under-recognized echocardiographic finding in PE.
Observation:
- This study describes 2 cases of PE presenting with reverse McConnell's sign.
- Reverse McConnell's sign involves normal RV mid-free wall motion with apical akinesia.
Findings:
- The literature review confirms McConnell's sign is associated with PE.
- The described cases highlight the existence and potential diagnostic utility of reverse McConnell's sign in PE.
Implications:
- Recognizing McConnell's sign and its reverse variant on echocardiography can aid in the diagnosis of PE.
- Further research is warranted to understand the prevalence and prognostic significance of reverse McConnell's sign in pulmonary embolism.
Related Concept Videos
01:29Pulmonary Embolism I: Introduction
10
Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...
10
01:29Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
15
Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
15
01:27Pulmonary Embolism III: Nursing Management
17
A pulmonary embolism occurs when a thrombus, amniotic fluid, tumor tissue, fat, or air embolus blocks one or more pulmonary arteries. Effective nursing management and patient education are crucial for improving outcomes and preventing recurrence.Nursing management starts with obtaining a comprehensive patient history, particularly noting any history of deep vein thrombosis (DVT). Assess for clinical manifestations, including dyspnea, chest pain, crackles, heart murmurs, and signs of right-sided...
17
01:23Acute Respiratory Failure-IV
181
Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
181
01:23Mitral Regurgitation II: Clinical Features and Diagnostic Tests
26
Mitral regurgitation (MR) is a valvular heart disorder in which the mitral valve fails to close tightly, allowing blood to leak backward into the heart. Understanding the clinical manifestations, assessment, diagnostic findings, and medical management of MR is crucial to effectively managing affected patients.Clinical Manifestations of Mitral RegurgitationMitral regurgitation can be acute or chronic, each presenting differently and requiring different approaches:1. Acute Mitral...
26
01:30Respiratory System Abnormal Finding I: Inspection and Percussion
323
Respiratory system abnormalities are a significant concern in healthcare due to their potential to indicate underlying severe conditions like Chronic Obstructive Pulmonary Disease (COPD), asthma, and pneumonia. These abnormalities can often be detected through physical examination methods like inspection and percussion.
Inspection Findings
During an inspection, several findings may suggest the presence of respiratory distress or disease. Pursed-lip breathing, where exhalation is slowed by...
Inspection Findings
During an inspection, several findings may suggest the presence of respiratory distress or disease. Pursed-lip breathing, where exhalation is slowed by...
323