PMID: 8586136Oct 1, 1995Paper

Acoustic properties of the normal chest

The European Respiratory Journal
F DalmayR Menier

Abstract

Laënnec invented the stethoscope in 1816 and published a treatise on auscultation in 1819. We then had to wait until the 1950s to observe development of modern devices and methods of recording and signal-processing, which allowed objective studies of lung sounds in time and frequency fields. Tracheobronchial sounds generated by ventilation originate in the upper airways, the frequency content of these sounds has led to extensive research. Consolidated lungs act as more efficient sound conductors to the chest wall (bronchial breathing murmur). Tracheobronchial sounds contain higher frequency components compared to vesicular lung sounds. The origin of vesicular lung sounds has been becoming progressively clear for about 10 yrs. It is at least partly produced locally, deep, and probably intralobular. Clearly, further studies need to be performed in order to elucidate the true mechanisms involved in generating vesicular lung sounds, the redistribution of intrapulmonary gas or vibrations caused by the stretching of lung tissue. The devices developed are already useful for monitoring the state of patients in intensive care. Sooner or later, real time analysis and automated diagnosis will become available.

Citations

Nov 28, 2002·Medical & Biological Engineering & Computing·H A MansyR H Sandler
May 4, 2005·Medical & Biological Engineering & Computing·H A MansyR H Sandler
May 1, 1997·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·J W McIntyre
Oct 20, 2011·Annals of Biomedical Engineering·Miško SubotićSlobodan T Jovičić
Aug 2, 2002·Biomedizinische Technik. Biomedical Engineering·V GrossC Vogelmeier
Sep 10, 2014·Sensors·Bersain A ReyesKi H Chon
Feb 23, 2010·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Atul C MehtaJ Mark Madison
Jan 13, 2009·Pediatric Clinics of North America·Craig Mellis
May 20, 2015·Internal Medicine·Akiko IshimatsuTomoaki Hoshino
Nov 16, 2005·IEEE Transactions on Bio-medical Engineering·Eugenijus KaniusasBernd Saletu
Nov 15, 2000·IEEE Transactions on Bio-medical Engineering·M OudJ S van der Zee
Jun 23, 2012·Allergology International : Official Journal of the Japanese Society of Allergology·Yukio Nagasaka
Dec 20, 2003·Respiratory Medicine·I Sánchez, C Vizcaya
Dec 10, 2015·The European Respiratory Journal·Hans PasterkampKostas N Priftis
Sep 12, 2020·Sensors·Gürkan YilmazOlivier Chételat

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.