Related Experiment Video
Updated: Jun 29, 2025

Ultrasonographic Assessment During Cardiopulmonary Resuscitation
Published on: October 24, 2020
Hamman's Sign: Rediscovering Cardiac Auscultation Through a Pneumomediastinum
Mariana Pereira Santos1, Andreia Campinas1, Rui Coelho2
1Cardiology Department. Centro Hospitalar Universitário de Santo António (CHUdSA). Porto; Instituto de Ciências Biomédicas Abel Salazar (ICBAS). School of Medicine and Biomedical Sciences. Universidade do Porto. Porto. Portugal.
No abstract available in PubMed .
Related Concept Videos
Assessment of the Cardiovascular System IV: Auscultation
Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.
Cardiovascular System Abnormal Findings II: Auscultation
Abnormal Heart Sounds
Gallops:
Respiratory System Abnormal Finding II: Palpation and Auscultation
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
Respiratory System Abnormal Finding I: 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...
Physical Assessment of the Respiratory Tract III: Percussion
Percussion in Respiratory Assessment
Percussion evaluates underlying tissue composition with audible and tactile vibrations,...
Assessment of Respiration
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...

