Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Acute Respiratory Failure-III01:30

Acute Respiratory Failure-III

728
Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without...
728
Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

981
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:
981
Acute Respiratory Failure-I01:21

Acute Respiratory Failure-I

791
Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
791
Acute Respiratory Failure-IV01:23

Acute Respiratory Failure-IV

490
Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
490
Acute Respiratory Failure-V01:29

Acute Respiratory Failure-V

421
The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
Ensure that patients are monitored continuously for their response to therapy, including changes in...
421
Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

407
Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
407

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Ozzy Osbourne and Parkinson's disease: from darkness to awareness.

Arquivos de neuro-psiquiatria·2026
Same author

Longitudinally extensive myelitis in neurosarcoidosis.

Practical neurology·2026
Same author

SCA27B in Brazil: frequency, phenotype and genotype-phenotype correlations.

Journal of neurology·2026
Same author

Adult-onset spontaneous periodic hypothermia with hyperhidrosis: three cases of a Shapiro syndrome variant.

Clinical autonomic research : official journal of the Clinical Autonomic Research Society·2026
Same author

Reply to: "Drinking-Induced Orolingual Tremor: Report of Two Cases with a Novel Response to Propranolol".

Movement disorders clinical practice·2026
Same author

Arts Syndrome and Involuntary Eye Movements.

Movement disorders clinical practice·2026

Video Experimental Relacionado

Updated: Jan 8, 2026

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle
09:40

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle

Published on: January 19, 2017

12.1K

Función Respiratoria en la Ataxia de Friedreich

Celiana Figueiredo Viana1, Cristina Saade Jaques1, Marcio Luiz Escorcio Bezerra1

  • 1Division of General Neurology and Ataxia Unit, Department of Neurology, Universidade Federal de São Paulo-Escola Paulista de Medicina, São Paulo, Brazil.

Movement disorders : official journal of the Movement Disorder Society
|December 19, 2025
PubMed
Resumen

Los pacientes con ataxia de Friedreich (AF) muestran una reducción de la función pulmonar y la fuerza de los músculos respiratorios, lo que indica un deterioro respiratorio subclínico. La evaluación e intervención tempranas son cruciales para el manejo de los problemas pulmonares en la AF.

Palabras clave:
Ataxia de Friedreichdisfagiaconducción del nervio frénicoparámetros respiratoriosespirometría

Más Videos Relacionados

Repeated Measurement of Respiratory Muscle Activity and Ventilation in Mouse Models of Neuromuscular Disease
09:24

Repeated Measurement of Respiratory Muscle Activity and Ventilation in Mouse Models of Neuromuscular Disease

Published on: April 17, 2017

13.5K
Functional and Morphological Assessment of Diaphragm Innervation by Phrenic Motor Neurons
09:43

Functional and Morphological Assessment of Diaphragm Innervation by Phrenic Motor Neurons

Published on: May 25, 2015

18.1K

Videos de Experimentos Relacionados

Last Updated: Jan 8, 2026

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle
09:40

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle

Published on: January 19, 2017

12.1K
Repeated Measurement of Respiratory Muscle Activity and Ventilation in Mouse Models of Neuromuscular Disease
09:24

Repeated Measurement of Respiratory Muscle Activity and Ventilation in Mouse Models of Neuromuscular Disease

Published on: April 17, 2017

13.5K
Functional and Morphological Assessment of Diaphragm Innervation by Phrenic Motor Neurons
09:43

Functional and Morphological Assessment of Diaphragm Innervation by Phrenic Motor Neurons

Published on: May 25, 2015

18.1K

Área de la Ciencia:

  • Neurología
  • Neumología
  • Genética

Sus antecedentes:

  • La ataxia de Friedreich (AF) es un trastorno neurodegenerativo raro.
  • La disfunción respiratoria es una complicación común pero poco estudiada en pacientes con AF.

Objetivo del estudio:

  • Evaluar de manera integral la función pulmonar y la fuerza de los músculos respiratorios en individuos con AF.
  • Comparar los parámetros respiratorios entre pacientes con AF y controles sanos.

Principales métodos:

  • Dieciséis pacientes con AF y 20 controles sanos se sometieron a espirometría, mediciones de presiones respiratorias máximas, presión inspiratoria nasal de olfateo (SNIP), estudio de conducción del nervio frénico, SpO2 y ETCO2.
  • El análisis estadístico incluyó pruebas t, pruebas de Mann-Whitney y modelos de regresión ajustados por el índice de masa corporal (IMC) y el estado de fumador.
  • La gravedad de la ataxia se cuantificó utilizando la Escala de Evaluación y Calificación de la Ataxia (SARA).

Principales resultados:

  • Los pacientes con AF demostraron una capacidad vital forzada (CVF) y un volumen espiratorio forzado en 1s (VEF1) significativamente reducidos.
  • Se observó una disminución de las presiones respiratorias máximas y un patrón ventilatorio restrictivo predominante en el grupo de AF.
  • Se observó una menor saturación periférica de oxígeno (SpO2) en los pacientes con AF en comparación con los controles.

Conclusiones:

  • El deterioro respiratorio en la AF es a menudo subclínico, lo que supone riesgos de infecciones pulmonares y insuficiencia ventilatoria.
  • La debilidad neuromuscular y la alteración de la coordinación respiratoria probablemente contribuyen a la disfunción observada.
  • Se recomiendan evaluaciones respiratorias regulares y atención multidisciplinaria integrada para mejorar los resultados en la AF.