Related Experiment Video
Updated: Feb 22, 2026
08:12
Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
20.6K
Effect of high-frequency jet ventilation on heart rate variability
Junken Koh1, Masahide Shinzawa2, Yoshihiro Kosaka2
1Department of Anesthesia, Kure National Hospital, 3-1 Aoyama-cho, Kure, 737, Hiroshima, Japan.
Journal of Anesthesia
|September 19, 2017
Summary
High-frequency jet ventilation (HFJV) during fentanyl anesthesia did not alter low-frequency heart rate variability. However, HFJV eliminated high-frequency variability and increased stress hormones, suggesting altered breathing patterns and sympathetic activity.
Area of Science:
- Anesthesiology
- Cardiovascular Physiology
- Respiratory Physiology
Background:
- Heart rate variability (HRV) reflects autonomic nervous system activity.
- High-frequency jet ventilation (HFJV) is an alternative mechanical ventilation strategy.
- Understanding HFJV's impact on cardiovascular regulation during anesthesia is crucial.
Purpose of the Study:
- To investigate the effects of HFJV on HRV during fentanyl anesthesia.
- To compare HRV parameters between HFJV and intermittent positive pressure ventilation (IPPV).
Main Methods:
- Power spectral density analysis of R-R interval time series.
- ECG and arterial pressure monitoring in nine patients under fentanyl anesthesia.
- Comparison of HRV (LF and HF power) between IPPV and HFJV.
Main Results:
- Low-frequency (LF) power of HRV remained unchanged between IPPV and HFJV.
- High-frequency (HF) power of HRV was detected during IPPV but not during HFJV.
- Plasma norepinephrine and epinephrine levels were significantly higher during HFJV compared to IPPV.
Conclusions:
- HFJV primarily affects the respiratory frequency component of HRV during fentanyl anesthesia.
- Altered breathing patterns and increased sympathetic neural outflow may contribute to observed HRV changes.
- HFJV's influence on cardiovascular autonomic regulation warrants further investigation.
More Related Videos
Related Concept Videos
01:30Factors Influencing Heart Rate
7.0K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
7.0K
01:19Cardiac Output I:Effect of Heart Rate on Cardiac Output
2.9K
Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
2.9K
01:19Factors Affecting Pulmonary Ventilation
3.4K
Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
3.4K
01:20Assessment of Ventilation I: Respiratory Rate
2.4K
Assessment of Ventilation
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:
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:
2.4K
01:31Regulation of Heart Rates
4.2K
The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
4.2K
01:23Mechanical Ventilation III: Noninvasive Ventilation
639
Noninvasive positive-pressure ventilation (NIPPV), continuous positive airway pressure (CPAP), and bilevel positive airway pressure (BiPAP) are essential methods in respiratory care. These ventilation techniques offer unique benefits for patients with various respiratory conditions, providing adequate support without requiring intubation. Let's explore how each method is crucial in improving patient outcomes and enhancing respiratory therapy.
Noninvasive Positive-Pressure Ventilation...
Noninvasive Positive-Pressure Ventilation...
639