Age and rest-activity rhythm as predictors of survival in patients with newly diagnosed lung cancer
Wen-Pei Chang1,2, Robert Smith3, Chia-Chin Lin2,3,4
1a Department of Nursing , Taipei Medical University-Shuang Ho Hospital, Ministry of Health and Welfare , New Taipei City , Taiwan.
Abstract:
Disruption of the rest-activity rhythm in patients with lung cancer can accelerate cancer progression and affect survival. Rest-activity rhythm changes with age. Therefore, we investigated the effects of rest-activity rhythm and age on patients' survival. A total of 84 patients with lung cancer were recruited, then separated into two groups; younger patients aged under 65 years or elderly patients aged 65 and over. The dichotomy index (I < O) was used to estimate the rest-activity rhythm measured through the actigraphy motion detector. Cox proportional hazards models were adopted to investigate the effects of different variables on the patients' survival. After adjusting for confounding, the risk of earlier mortality in the younger patients with disrupted I < O were 2.52 (95%CI = 1.09-5.82) times higher than that in the younger patients with robust I < O (p = 0.03), the risk of earlier mortality in the elderly patients with disrupted I < O was 4.08 (95%CI = 1.91-8.68) times higher than that in the elderly patients with robust I < O (p < 0.001). Therefore, age and I < O influence the survival period of patients with lung cancer. Moreover, disrupted I < O has a substantial influence on elderly patients. In conclusion, aging and disrupted rest-activity rhythm negatively and jointly influenced the survival period of the patients with lung cancer and significantly increased their death risk.
Related Concept Videos
Assessment 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:
Assessment 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:
Cancer Survival Analysis
Respiratory Volumes and Capacities I
Assessment of Airway, Skin Color, and Use of Accessory Muscles
Introduction
The initial evaluation of a patient's respiratory system...
Actuarial Approach
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
