Stress during surgery
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so…it seems if you are more stressed at the beginning of an operation your results are better.
Interestingly with age, I’m much more stressed than as a youngster. Because I know all too well what happens when things go south.
I think it’s like driving. Young drivers (not right when getting their drivers license but after a year or two on the road) tend to think they can handle anything. Experienced drivers are much more wary. Same with surgery. I went into operations years ago which now would give me great trepidation. I thought maybe I was getting chicken. But it’s not that. It’s just being more realistic.https://jamanetwork.com/journals/jamasurgery/article-abstract/2829133
, increased surgeon stress in the first 5 minutes of surgery was associated with a significant reduction in major surgical complications after controlling for patient, surgeon, and surgery characteristics.
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They measured heart rate variability. Is that a valid assessment of stress?
This is new to me. Thanks, ChatGPT:
Yes, the ratio of low-frequency (LF) to high-frequency (HF) heart rate variability (HRV) is often used as an indicator of stress in physiological and psychological research. Here's why:
Understanding HRV Components
- Low-Frequency (LF) HRV: Reflects a combination of both sympathetic (fight or flight) and parasympathetic (rest and digest) nervous system activity, though it is often more associated with sympathetic dominance.
- High-Frequency (HF) HRV: Directly linked to parasympathetic nervous system activity, especially vagal tone, which reflects relaxation and calm states.
LF/HF Ratio as a Stress Marker
- The LF/HF ratio represents the balance between the sympathetic and parasympathetic branches of the autonomic nervous system.
- Higher LF/HF ratios are generally associated with increased sympathetic activity (stress, anxiety, or arousal).
- Lower LF/HF ratios indicate a dominance of parasympathetic activity (relaxation, recovery, or calmness).
Validity of LF/HF as a Stress Measure
- Supportive Evidence: Numerous studies have shown that acute stress, anxiety, and emotional challenges correlate with an elevated LF/HF ratio, making it a useful proxy for stress.
- Limitations:
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- LF and HF components can vary due to factors other than stress, such as breathing rate, physical activity, age, and certain medical conditions.
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- LF/HF ratio interpretation can sometimes oversimplify the complexity of autonomic nervous system regulation.
Practical Use
The LF/HF ratio is commonly used in:
- Stress monitoring during work, exercise, or daily life.
- Biofeedback training to help individuals learn to regulate stress.
- Research studies on emotional and physiological responses.
In conclusion, while the LF/HF ratio is a valid and widely used measure of stress, it should ideally be used in combination with other physiological and psychological assessments for a more comprehensive evaluation.