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Related Concept Videos

Pneumonia III: Complications and Assessment01:30

Pneumonia III: Complications and Assessment

Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:
COPD: Management Using Bronchodilators and Corticosteroids01:26

COPD: Management Using Bronchodilators and Corticosteroids

Chronic obstructive pulmonary isease (COPD) involves a group of progressive lung disorders characterized by persistent airflow limitation and chronic respiratory symptoms. Asthma-COPD Overlap Syndrome (ACOS), encompassing features of both asthma and Chronic obstructive pulmonary disease (COPD), is a group of progressive lung disorders that includes chronic bronchitis, emphysema, and refractory (non-reversible) asthma. ACOS leads to complex clinical presentations that combine the inflammatory...
Pneumothorax II: Pathophysiology01:08

Pneumothorax II: Pathophysiology

Pneumothorax means the presence of air in the pleural space — the thin potential gap between the visceral and parietal pleura. This condition disrupts the normal pressure balance that keeps the lungs inflated, leading to partial or complete collapse of the affected lung.Normal physiologyUnder normal conditions, the pleural space maintains a slightly negative intrapleural pressure, which keeps the lungs expanded against the chest wall. This negative pressure creates a delicate balance between...
Pneumonia I: Introduction01:30

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
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:
Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:

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Related Experiment Videos

PneumoScore: Risk Prediction Model for 90-Day Mortality After Lung Resection.

Renata Matheus Faccioli1,2, Luisa Mendes Heise3, Leticia Leone Lauricella1

  • 1Department of Thoracic Surgery, Clinics Hospital, University of São Paulo Medical School, São Paulo, Brazil.

Annals of Surgical Oncology
|May 7, 2026
PubMed
Summary
This summary is machine-generated.

A new model, PneumoScore, accurately predicts 90-day mortality after lung cancer resection. This tool aids surgeons in preoperative risk assessment for thoracic surgery patients.

Keywords:
90-day mortalityLung cancerLung resectionMachine learningRisk prediction

Related Experiment Videos

Area of Science:

  • Thoracic Surgery
  • Oncology
  • Medical Informatics

Background:

  • Lung resection is standard for early lung cancer but has high mortality.
  • Accurate preoperative risk prediction is crucial for patient outcomes.
  • Existing models may not fully capture mortality risk after lung cancer surgery.

Purpose of the Study:

  • To develop and validate a novel model for predicting 90-day mortality after lung cancer resection.
  • To compare the performance of the novel model against established risk prediction tools.
  • To improve preoperative risk stratification in patients undergoing lung cancer surgery.

Main Methods:

  • Data from 2001 patients undergoing lung resection were analyzed from the Brazilian Lung Cancer Registry.
  • A logistic regression model (PneumoScore) was developed using training data (70%) and validated on testing data (30%).
  • Model performance was evaluated using AUROC, AUPR, Brier Score, BSS, calibration slope, and intercept.

Main Results:

  • PneumoScore, incorporating factors like age, comorbidities, and surgical approach, achieved an AUROC of 0.84.
  • The model demonstrated strong predictive accuracy with an AUPR of 0.99 and a Brier Skill Score of 0.256.
  • PneumoScore showed excellent calibration with a slope of 1.067.

Conclusions:

  • PneumoScore exhibits excellent performance in predicting critical 90-day postoperative mortality after lung cancer resection.
  • The model has the potential to significantly enhance preoperative evaluation and decision-making in thoracic surgery.
  • This novel tool addresses an underexplored but vital outcome in lung cancer treatment.