Respiratory sounds

Chronic obstructive pulmonary disease (COPD) is a chronic respiratory disease that seriously threatens people’s health, with high morbidity and mortality worldwide. At present, the clinical diagnosis methods of COPD are time-consuming, invasive, and radioactive.

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Pulmonary acoustic parameters extracted from recorded respiratory sounds provide valuable information for the detection of respiratory pathologies. The automated analysis of pulmonary acoustic signals can serve as a differential diagnosis tool for medical professionals, a learning tool for medical students, and a self-management tool for patients.

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Accumulation of chyle in the thoracic cavity is called as chylothorax. A five year old male Rottweiler was presented to the Teaching Veterinary Clinical Complex, Maanuthy with the history of limb edema and labored breathing. On auscultation of lung crackles and high intensity sounds and muffled heart sounds were observed. Radiography confirms the presence of effusion in the thoracic cavity. Solitary Ventricular Premature Complexes were observed in the three-minute electrocardiographic examination. Thoracic ultrasonography revealed anechoic areas, which confirmed pleural effusions.

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A study was carried out in 24 buffaloes affected with Bovine Respiratory Disease (BRD) Complex, which were diagnosed based on the history and clinical findings of inappetance to anorexia, fever, nasal discharge, coughing, dyspnoea and abnormal lung sounds on auscultation of thoracic area. The affected animals were randomly categorized in three groups for treatment to evaluate the therapeutic efficacy of ceftiofur, levofloxacin and moxifloxacin. Based on remission of clinical signs and symptoms ceftiofur was found to be most effective antibiotic for treatment of BRD complex in buffaloes.

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After completing this chapter, you will be able to: Explain the functions of the respiratory system, explain the difference between internal respiration and external respiration, describe how the larynx produces voice sounds, list the structures contained within the lungs, describe the coverings of the lungs and chest cavity,...

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Several respiratory diseases are associated with specific respiratory sounds. In contrast to auscultation, computerized lung sound analysis is objective and can be performed continuously over an extended period. Moreover, audio recordings can be stored.

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Seven non-descript cats presented with signs of pyothorax were included for the study. Affected cats showed respiratory distress, oral breathing, extended head/neck, abducted elbow, dyspnoea and fever. Muffled heart sounds were appreciated on auscultation. Thoracocentesis was done at 7th intercostal space. Haematology revealed leukocytosis with neutrophilia. Radiography and echocardiography confirmed the pyothorax. Staphylococcus sp and/or Streptococcus sp were isolated from pleural fluid. All the affected cats were treated with amoxicillin+cloxacillin and furosemide.

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Chapter 24 - The respiratory system. After completing chapter 24, you will be able to: Explain the functions of the respiratory system, explain the difference between internal respiration and external respiration, describe how the larynx produces voice sounds, list the structures contained within the lungs, describe the coverings of the lungs and chest cavity,...

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Chapter 30 - The respiratory system. After completing Chapter 30, you will be able to: Explain the functions of the respiratory system, explain the difference between internal respiration and external respiration, describe how the larynx produces voice sounds, list the structures contained within the lungs,...

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Most flat-panel monitors use liquid crystal display (LCD) technology. Passive matrix LCD uses a transistor for each row and column of pixels: less expensive, narrow viewing angle, submarining (animated graphics blurry) Active matrix LCD uses a transistor for each pixel on the screen: expensive, wider viewing angle, faster refresh Thin-film transistor (TFT) displays use multiple transistors for each pixel.

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Age-related hearing loss or presbycusis is mainly caused by changes in the inner ear. However, your genes and loud noises (such as from rock concerts or music headphones) may play a large role. Initially there is difficulty in hearing high-frequency sounds, such as someone talking. As hearing gets worse, it may become difficult to hear sounds at lower pitches. Hearing aids Telephone amplifiers and other assistive devices may be helpful. A cochlear implant (Surgery) may be recommended for certain women with very severe hearing loss.

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Breath sounds have long been important indicators of respiratory health and disease. Acoustical monitoring of respiratory sounds has been used by researchers for various diagnostic purposes. A few decades ago, physicians relied on their hearing to detect any symptomatic signs in respiratory sounds of their patients. However, with the aid of computer technology and digital signal processing techniques in recent years, breath sound analysis has drawn much attention because of its diagnostic capabilities.

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Pertussis is an acute infection of the respiratory tract caused by Bordetella pertussis. The name pertussis means "violent cough," which aptly describes the most consistent and prominent feature of the illness. The inspiratory sound made at the end of an episode of paroxysmal coughing gives rise to the common name for the illness, "whooping cough"; however, this feature is variable: it is uncommon among infants ≤6 months of age and is frequently absent in older children and adults.

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Physical Findings Patients with pneumococcal pneumonia usually appear ill and have a grayish, anxious appearance that differs from that of persons with viral or mycoplasmal pneumonia. Temperature, pulse, and respiratory rate are typically elevated. Elderly patients may have only a slight temperature elevation or may be afebrile. Hypothermia may be documented instead of fever and is associated with increased morbidity and mortality. Pleuritic chest pain may cause diminished respiratory excursion (splinting) on the affected side.

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