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Related Concept Videos

Pulmonary Function Tests01:25

Pulmonary Function Tests

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Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
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Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies01:27

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

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Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
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Respiratory Volumes01:15

Respiratory Volumes

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Respiratory volumes are crucial metrics, meticulously measured to quantify the air exchanged in and out of the lungs during various phases of the breathing cycle. These precise measurements are vital for assessing lung function, diagnosing respiratory conditions, and monitoring overall respiratory health. Each parameter provides specific insights into the mechanics of breathing and the functional capacity of the lungs.
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
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Factors Affecting Pulmonary Ventilation01:19

Factors Affecting Pulmonary Ventilation

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Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
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Mechanical Ventilation II: Invasive Ventilation01:23

Mechanical Ventilation II: Invasive Ventilation

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Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
Negative-Pressure Ventilators
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Respiratory Volumes and Capacities I01:26

Respiratory Volumes and Capacities I

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Assessing the respiratory rate and rhythm for a complete minute is crucial for evaluating the breathing pattern. Even a minor increase in the patient's average respiratory rate, by as little as three to five breaths per minute, is an early and vital indicator of respiratory distress. Patients with a respiratory rate exceeding twenty-four breaths per minute require close monitoring to determine the physiological alterations. This careful observation is essential for prompt recognition and...
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Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise
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Changes in Spirometry After Left Ventricular Assist Device Implantation.

Burhan Mohamedali1, Geetha Bhat2, Gardner Yost2

  • 1Department of Cardiology, Rush University, Chicago, IL, USA.

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|May 22, 2015
PubMed
Summary
This summary is machine-generated.

Left ventricular assist device (LVAD) implantation significantly reduces lung function, including forced expiratory volume and vital capacity. This decline may be linked to device type, warranting further investigation into LVAD impact on pulmonary health.

Keywords:
Diffusing capacity of the lungs for carbon monoxideLeft ventricular assist deviceMechanical assist devicePulmonary function testsSpirometryThoracic surgeryVentricular assist device

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Area of Science:

  • Cardiology
  • Pulmonology
  • Medical Devices

Background:

  • Left ventricular assist devices (LVADs) are critical for end-stage heart failure patients.
  • The impact of LVADs on pulmonary function remains largely uncharacterized.

Purpose of the Study:

  • To investigate long-term changes in spirometry after LVAD implantation.
  • To compare pulmonary function before and after LVAD placement.

Main Methods:

  • Retrospective study comparing preoperative and postoperative pulmonary function tests (PFTs).
  • Analysis included forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and diffusing capacity of the lungs for carbon monoxide (DLCO).

Main Results:

  • Significant reductions observed in FEV1, FVC, and DLCO post-LVAD implantation.
  • HeartMate II devices were associated with greater lung function impairment compared to HeartWare devices.

Conclusions:

  • LVAD placement leads to a significant decline in pulmonary function.
  • Device-specific differences in lung function impairment exist, potentially due to diaphragm restriction.
  • Further prospective studies are needed to confirm these findings.