Related Experiment Video
Updated: Oct 8, 2025
A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
Epidemiology of Respiration with Mandibular Movement in Advanced Cancer Patients: A Multicenter Prospective Cohort
Keisuke Kaneishi1, Tatsuya Morita2, Hiroyuki Kohara3
1Department of Palliative Care Unit, JCHO Tokyo Shinjuku Medical Center, Tokyo, Japan.
Abstract:
Respiration with mandibular movement (RMM) is one of the important clinical signs of impending death. However, there is very limited data on its natural course. This study was conducted in 23 inpatient palliative care units in Japan. It aimed to explore the natural course of RMM. Among a total of 1526 cancer patients included, 1065 patients (69.8%) had RMM. A total of 14.8% patients experienced respiratory arrest within 30 minutes from RMM onset, 14.3% within 30-60 minutes, 34.4% within 1-4 hours, 17.5% within 4-12 hours, 8.9% within 12-24 hours, and 10.4%> 24 hours. Mean oxygen saturation and percentage of patients with SpO2 ≥90% at RMM onset were found to be significantly higher in patients with longer durations from RMM onset to death (p < 0.001). RMM occurred in a majority (80%) of dying patients within 12 hours. A minority of the patients survived >24 hours.
Related Concept Videos
01:20Assessment of Ventilation I: Respiratory Rate
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
01:23Assessment of Respiration
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
01:29Assessment of Ventilation II: Respiratory Depth and Rhythm
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
01:30Alterations in Respiration II
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
01:17Other Pulmonary Disorders
01:27Physical Assessment of the Respiratory Tract II: Inspection
Chest Configuration
The chest configuration...