Related Experiment Video
Updated: Jan 8, 2026
Method to Obtain Pattern of Breathing in Senescent Mice through Unrestrained Barometric Plethysmography
Published on: April 28, 2020
[Analysis of Respiratory Variables During Sleep in a Sample of Women in Perimenopause: a retrospective
Sofia Caporale1, Marcela Ponce de Leon1, Mariela Tanzi1
1Hospital Italiano de Buenos Aires.
Abstract:
Our objective was to analyze some obstructive respiratory variables during sleep in women considering the perimenopausal age range, between 40 to 58 years old.
Materials And Methods:
A retrospective cross-sectional study, consisting of analysis of reports of polysomnographies performed in women. The studies were divided by age into three groups: Group G1, G2, and G3. Data from the general series and intergroup differences were analyzed. Respiratory variables evaluated were the obstructive apneas-hypopneas index per hour of sleep (AHI) in total and REM, as well as the minimum and mean oxygen saturation. Continuous variables were expressed as mean and standard deviation (SD). Nominal variables were expressed as percentages with contingency for each analyzed variable. Significant p-value <0.5.
Results:
The total number of polysomnography reports analyzed in women in perimenopause was 145. Age in G1 was 40-46, G2=47-52, and G3=53-58. The total AHI was G1=5±6 events/hour, G2=8±13 events/hour, and G3=12±18 events/hour, with p=0.001. The AHI in REM phase was G1=15±6, G2=17±23, and G3=14±6 events/hour. The mean minimum saturation was G1=89±5%, G2=82±15%, and G3=84±8%, p=0.05.
Conclusions:
We found a statistically significant difference in the total AHI, and also a trend toward a decrease in the minimum oxygen saturation as women age. This is the first national study considering this period of a woman's life to analyze obstructive events during sleep.
Related Concept Videos
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:
01:20Assessment 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:
01:28Menopause
01:24Factors Affecting Respiration
01:26Respiratory Volumes and Capacities I