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Related Concept Videos

Factors Affecting Pulmonary Ventilation01:19

Factors Affecting Pulmonary Ventilation

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...
Pulmonary Function Tests01:25

Pulmonary Function Tests

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...
Factors Affecting Respiration01:24

Factors Affecting Respiration

Respiration is a crucial physiological function involving exchanging oxygen (O2) and carbon dioxide (CO2) between an organism and its environment. Various factors can impact this essential process:
Pneumothorax-II01:27

Pneumothorax-II

Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
Clinical Manifestations:
Atelectasis II: Pathophysiology01:10

Atelectasis II: Pathophysiology

Atelectasis develops when alveoli lose their air and collapse inward. Because lung tissue is naturally elastic, these air sacs shrink rather than remaining open. Collapsed alveoli are no longer ventilated, reducing their role in gas exchange. Blood flow may continue in these regions, creating a ventilation–perfusion mismatch. Clinical findings include decreased breath sounds, dullness to percussion, reduced chest expansion, and decreased tactile fremitus as sound transmission through collapsed...
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...

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Related Experiment Video

Updated: Jun 25, 2026

A Mouse Tumor Model of Surgical Stress to Explore the Mechanisms of Postoperative Immunosuppression and Evaluate Novel Perioperative Immunotherapies
13:37

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Published on: March 12, 2014

Which factors affect pulmonary function after lung metastasectomy?

Francesco Petrella1, Pasquale Chieco, Piergiorgio Solli

  • 1Division of Thoracic Surgery, European Institute of Oncology, Milan, Italy. francesco.petrella@ieo.it

European Journal of Cardio-Thoracic Surgery : Official Journal of the European Association for Cardio-Thoracic Surgery
|February 24, 2009
PubMed
Summary
This summary is machine-generated.

Pulmonary metastasectomy impacts lung function, with extensive resections causing significant, yet temporary, loss. The total volume of lung tissue removed within 90 days is the key factor influencing these changes.

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Area of Science:

  • Thoracic surgery
  • Pulmonary function testing
  • Oncology

Background:

  • Pulmonary metastasectomy is a common procedure for selected patients.
  • Multiple non-anatomical resections are often required.
  • The relationship between resection extent and functional lung loss is not well-established.

Purpose of the Study:

  • To investigate the impact of pulmonary metastasectomy on lung function.
  • To correlate changes in spirometry with the number and extent of resections.
  • To determine the influence of surgical intervals on pulmonary function post-metastasectomy.

Main Methods:

  • Retrospective review of pulmonary function tests (spirometry) before and after lung metastasectomy.
  • Correlation analysis of spirometric changes with the number of resections, extent of resection, and time intervals between surgeries.
  • Inclusion of 66 patients with detailed pre- and post-operative data.

Main Results:

  • Mean changes observed: FEV1 -13.4%, FVC -12.4%, DLCO/AV +1.2%.
  • Three or more non-anatomical resections resulted in functional loss comparable to lobectomy.
  • Extent of resection (>11 cm) and interval between surgeries (>90 days) significantly impacted FEV1 and FVC.
  • All functional changes resolved by three months post-surgery.
  • No significant impact from sex, age, operation side, or primary tumor histology.

Conclusions:

  • Spirometric changes post-pulmonary metastasectomy are primarily influenced by the total resected lung volume within 90 days.
  • Multiple non-anatomical resections (≥3) lead to functional deficits similar to lobectomy.
  • Lung function recovers within three months, irrespective of resection characteristics.