What is basal metabolic rate?
Metabolism comprises the processes that the body needs to function. Basal metabolic rate is the amount of energy per unit time that a person needs to keep the body functioning at rest.
What is basal insulin and how does it work?
Your body needs insulin to function properly, and the right dose of basal insulin may be the answer to stabilizing your blood sugar and avoiding diabetes complications. Insulin is a hormone that everyone needs. It allows the body to use sugar (glucose) properly.
What is a vasovagal reaction?
Vasovagal reaction: A reflex of the involuntary nervous system that causes the heart to slow down (bradycardia) and that, at the same time, affects the nerves to the blood vessels in the legs permitting those vessels to dilate (widen).
What is basal area and why is it important?
Knowing the basal area of your land is going to be helpful for a number of reasons. For example, high basal area for pine trees means that there is greater canopy cover, which will in turn reduce the amount of sunlight that reaches the ground, preventing certain low-growing plants like grasses and shrubs from growing.
What causes a vasovagal response?
Vasovagal syncope is caused by a sudden drop in blood pressure, often triggered by a reaction to something. This causes your heart to slow down for a short time. As a result, your brain may not get enough oxygen-rich blood, which causes you to pass out. Vasovagal syncope is typically not a serious health condition.
What is it called when you pass out when you poop?
"Defecation syncope" is the official term for fainting while trying for No.
What is considered a vasovagal reaction?
Vasovagal syncope (vay-zoh-VAY-gul SING-kuh-pee) occurs when you faint because your body overreacts to certain triggers, such as the sight of blood or extreme emotional distress. It may also be called neurocardiogenic syncope. The vasovagal syncope trigger causes your heart rate and blood pressure to drop suddenly.
How do you prevent a vasovagal reaction?
These might include:Avoiding triggers, such as standing for a long time or the sight of blood.Moderate exercise training.Discontinuing medicines that lower blood pressure, like diuretics.Eating a higher salt diet, to help keep up blood volume.Drinking plenty of fluids, to maintain blood volume.More items...
Why do I get hot when I poop?
Thanks to Reader's Digest, there's an explanation for this phenomenon! According to RD, poop sweats are caused by the vagus nerve, which runs from your noggin down to your balloon knot. The sewer snakes you're birthing "stimulate" the nerve (yuck) causing what RD refers to as "poo-phoria."
Why do I sweat and feel sick when I poop?
Do you ever begin sweating and feeling like you are going to pass out while pooping, or do you feel like you will pass out at the sight of blood? It's possible that your vagus nerve is causing this sensation and triggering your body's vasovagal reflex, or vasovagal response.
Can anxiety cause vasovagal?
One of the most common reasons people faint is in reaction to an emotional trigger. For example, the sight of blood, or extreme excitement, anxiety or fear, may cause some people to faint. This condition is called vasovagal syncope.
Does your heart stop during vasovagal syncope?
For syncope to occur due to this problem, the heart usually has to stop for at least 6 to 10 seconds. This is known as a sinus "pause." Heart block — Sometimes, part of the conduction system between the sinus node and the rest of the heart becomes disrupted due to heart disease.
What nerve causes vasovagal syncope?
A: These patients experienced a very common reaction known as vasovagal syncope. When the vagus nerve is overstimulated, the body's blood vessels dilate, especially those in the lower extremities, and the heart temporarily slows down. The brain is deprived of oxygen, causing the patient to lose consciousness.
Is vasovagal syncope a heart condition?
Vasovagal syndrome is a heart condition that can cause a sudden, rapid drop in heart rate and blood pressure, which leads to fainting. The condition may also be described as a vasovagal or neurocardiogenic syncope, or vasovagal attack.
What medications can cause vasovagal syncope?
Which drugs may cause syncope?Agents that reduce blood pressure (eg, antihypertensive drugs, diuretics, nitrates)Agents that affect cardiac output (eg, beta blockers, digitalis, antiarrhythmics)Agents that prolong the QT interval (eg, tricyclic antidepressants, phenothiazines, quinidine, amiodarone)More items...•
Can lack of sleep cause vasovagal syncope?
Vasovagal Syncope It might be more likely to occur if the patient is relatively dehydrated, is exposed to extreme heat, has been standing for a long period of time, is sleep deprived or is under a lot of stress. After fainting due to a vasovagal episode, it is not uncommon for the person to have cold or clammy skin.
My 23 year old experiences fainting episodes (vaso vagal ) during movies showing operations, etc. how could he prevent this?
Vaso vagal: The only method of prevention is avoid the kind of stimuli that cause these episodes. There is no specific medication to prevent this.
What is a vagal surge?
Increased vagal act: When the vagus nerve is stimulated, it is called vagal surge, the response is often a reduction in heart-rate or breathing. In some cases, excessive s... Read More
What is a high vagal tone?
Prone to relax: High vagal tone refers to ease of excitement of the parasympathetic branch of autonomic nervous system, which functions to maintain homeostasis, decre... Read More
What is inferior basal ischemia?
Lack of blood: Flow to the basal bottom part of heart muscle during stress & usually amenable to medical therapy. Also may be artifactual on nuclear stress test due... Read More
How can you remove a basal cell?
Information: Dessication and curettage. Effudex or carac. Cautery, freezing or surgical excision. For invasive basal cells cancers excision is usually the best. A ... Read More
What's basal metabolic rate predicting?
Caloric burn at rest: Dependent on what you eat (prtein vs sugar and starch, your total muscle mass. Your muscle/fat ratio. Fat has very low metabolic activity. Muscle bu... Read More
What is a standard basal metabolic rate?
BMR: is the energy ( calories) required to keep your body functioning at rest.
What is vagal syncope?
Vasovagal Syncope. Treatment. The vagal response is an automatic response within our bodies that occurs as a result of stimulation of our vagus nerve. It gets its name from the fact that it involves an interplay between your vagus nerve and your blood vessels.
What is the experience of fainting due to a drop in blood pressure and a subsequent decrease in the flow of
Syncope is the experience of fainting due to a drop in blood pressure and a subsequent decrease in the flow of blood to the brain. 3 Thus vasovagal syncope is a loss of consciousness triggered by a vagal response. Vasovagal syncope can cause a person to pass out and drop to the ground.
What are the triggers of vagal response?
As you will see, some of these triggers are internal, while others come from the environment: 1 . Emotional stress. Blood being drawn or the sight of blood. Fear. Gastrointestinal illness. Having a bowel movement. Heat.
What happens when the vagus nerve is stimulated?
When the vagus nerve is suddenly stimulated, it sets off a chain of events within the body. These changes can result in a wide variety of unpleasant sensations and symptoms. The vagal response goes by a variety of names, including:
How to stop fainting from vasovagal?
Another option is to lower your head between your knees. Drinking some water may be of help as well. Whatever you do, do not stand up quickly as you put yourself at risk for fainting. If you experience vasovagal symptoms when having a bowel movement, as some people who have irritable bowel syndrome experience, you may want to try ...
What causes blood to pool in your legs?
2 When the reflex is triggered it causes an abrupt drop in blood pressure and a sudden reduction in heart rate. The blood vessels in your legs may widen, causing blood to pool in your legs.
What happens when you faint?
All of these changes can result in less blood flowing to your brain and trigger sensations that make you feel as if you might faint. At its worst, the reflex can result in an actual brief loss of consciousness, a condition known as vasovagal syncope.
What is the name of the condition that causes sudden and rapid drop in heart rate and blood pressure?
Vasovagal syndrome is a heart condition that can cause a sudden, rapid drop in heart rate and blood pressure, which leads to fainting. The condition may also be described as a vasovagal or neurocardiogenic syncope, or vasovagal attack.
What causes a vasovagal attack?
Vasovagal response syndrome can be caused by: Heat exposure. Standing for long periods of time. Seeing blood or having blood drawn. Straining to have a bowel movement. Running or other strenuous exercise. Extreme fear, panic or other situational stressors.
What are the symptoms of vasovagal syndrome?
Prior to fainting, other signs and symptoms of a vasovagal reaction may include: Going pale/loss of skin color. Lightheadedness.
How to prevent vasovagal attacks?
Reducing heat exposure, especially when engaged in strenuous activity, drinking plenty of fluids, not standing too long, and avoiding things that cause stress will help prevent vasovagal attacks associated with this heart condition.
What is Baptist Health?
Baptist Health is known for advanced, superior care for patients with heart disease and the diagnosis and treatment of heart conditions such as vasovagal syndrome. You will appreciate timely appointments and a professional, friendly atmosphere where we take time to listen to your concerns. At Baptist Health, you have access to ...
What is the procedure to check for heart disease?
Common diagnostic procedures can include: Echocardiogram: This ultrasound exam uses soundwaves to take moving pictures of the heart’s chambers and valves. Electrocardiogram (EKG): This test measures the electrical activity of the heart and can help determine if parts of the heart are enlarged, overworked or damaged.
Is vasovagal syndrome serious?
Vasovagal syndrome by itself is not a serious condition, but it could be indicative of a more serious condition. Those who experience frequent episodes of vasovagal fainting, or changes in the frequency of episodes, should see a doctor to determine if there are more serious underlying causes.
Why is basal area important?
For example, high basal area for pine trees means that there is greater canopy cover, which will in turn reduce the amount of sunlight that reaches the ground, preventing certain low-growing plants like grasses and shrubs from growing.
What tool is used to estimate basal area?
Basal area can also be estimated for an entire stand of trees, most efficiently with angle of sight tools such as an angle gauge or a wedge prism. Another important thing we learned about basal area is how important it is to management of forested land.
What does basal area tell you?
Different trees need different amounts of space, so knowing the basal area will tell you not only the diameter of your trees but also how dense they are. This information will help you plan for thinning or planting needs in order to maximize your timber profits. Lesson Summary.
How far off the ground is the basal area?
As it turns out, basal area, which for a given tree, is the cross-sectional area at 4.5 feet off the ground, is an important measurement in forestry practices, because it tells you about both the number and size of the trees instead of just one or the other.
What does TPA tell you about trees?
Something like trees per acre (T PA) tells you how dense the trees are , but it doesn't tell you about the trees themselves. This is really important information, because if you have a lot of really skinny trees that's a totally different story than a few fat trees, though both could have a similar density. 5:49.
Who is Elizabeth a massage therapist?
Elizabeth, a Licensed Massage Therapist, has a Master's in Zoology from North Carolina State, one in GIS from Florida State University, and a Bachelor's in Biology from Eastern Michigan University. She has taught college level Physical Science and Biology.
Overview
Vasovagal syncope (vay-zoh-VAY-gul SING-kuh-pee) occurs when you faint because your body overreacts to certain triggers, such as the sight of blood or extreme emotional distress. It may also be called neurocardiogenic syncope.
Symptoms
Before you faint due to vasovagal syncope, you may experience some of the following:
Causes
Vasovagal syncope occurs when the part of your nervous system that regulates heart rate and blood pressure malfunctions in response to a trigger, such as the sight of blood.
Prevention
You may not always be able to avoid a vasovagal syncope episode. If you feel like you might faint, lie down and lift your legs. This allows gravity to keep blood flowing to your brain. If you can't lie down, sit down and put your head between your knees until you feel better.
What is BMR in birds?
BMR is a flexible trait (it can be reversibly adjusted within individuals), with, for example, lower temperatures generally resulting in higher basal metabolic rates for both birds and rodents. There are two models to explain how BMR changes in response to temperature: the variable maximum model (VMM) and variable fraction model (VFM). The VMM states that the summit metabolism (or the maximum metabolic rate in response to the cold) increases during the winter, and that the sustained metabolism (or the metabolic rate that can be indefinitely sustained) remains a constant fraction of the former. The VFM says that the summit metabolism does not change, but that the sustained metabolism is a larger fraction of it. The VMM is supported in mammals, and, when using whole-body rates, passerine birds. The VFM is supported in studies of passerine birds using mass-specific metabolic rates (or metabolic rates per unit of mass). This latter measurement has been criticized by Eric Liknes, Sarah Scott, and David Swanson, who say that mass-specific metabolic rates are inconsistent seasonally.
How is BMR measured?
BMR may be measured by gas analysis through either direct or indirect calorimetry, though a rough estimation can be acquired through an equation using age, sex, height, and weight.
What is the metabolic rate of the body?
Basal metabolic rate is the amount of energy per unit of time that a person needs to keep the body functioning at rest. Some of those processes are breathing, blood circulation, controlling body temperature, cell growth, brain and nerve function, and contraction of muscles.
How does basal metabolic rate affect the rate that a person burns calories?
Basal metabolic rate affects the rate that a person burns calories and ultimately whether that individual maintains, gains, or loses weight. The basal metabolic rate accounts for about 60 to 75% of the daily calorie expenditure by individuals. It is influenced by several factors.
What is the SMR in animal science?
In bradymetabolic animals, such as fish and reptiles, the equivalent term standard metabolic rate ( SMR) is used.
Why is heart rate important for basal metabolic rate?
Heart rate is important for basal metabolic rate and resting metabolic rate because it drives the blood supply, stimulating the Krebs cycle. During exercise that achieves the anaerobic threshold, it is possible to deliver substrates that are desired for optimal energy utilization.
What are the functions of the autonomic nervous system?
control and integration of activities of the autonomic nervous system (ANS)#N#The ANS regulates contraction of smooth muscle and cardiac muscle, along with secretions of many endocrine organs such as the thyroid gland (associated with many metabolic disorders).#N#Through the ANS, the hypothalamus is the main regulator of visceral activities, such as heart rate, movement of food through the gastrointestinal tract, and contraction of the urinary bladder. 1 The ANS regulates contraction of smooth muscle and cardiac muscle, along with secretions of many endocrine organs such as the thyroid gland (associated with many metabolic disorders). 2 Through the ANS, the hypothalamus is the main regulator of visceral activities, such as heart rate, movement of food through the gastrointestinal tract, and contraction of the urinary bladder.
Causes
Symptoms
- Once a vasovagal reflex has been triggered, a variety of physical symptoms may be experienced. These include:
Terminology
- No discussion of the vagal response is complete without bringing attention to the term vasovagal syncope. Syncope is the experience of fainting due to a drop in blood pressure and a subsequent decrease in the flow of blood to the brain. Thus vasovagal syncope is a loss of consciousness triggered by a vagal response.
Treatment
- A vasovagal episode can be frightening, but is usually not a sign of a health emergency. The best thing to do is to lie down for approximately 10 minutes or so. Another option is to lower your head between your knees. Drinking some water may be of help as well. Whatever you do, do not stand up quickly as you put yourself at risk for fainting.
Prevention
- You may be able to prevent such episodes by getting good sleep, keeping yourself well-hydrated, and avoiding standing for extended periods of time. If you experience vasovagal symptoms when having a bowel movement, as some people who have irritable bowel syndrome experience, you may want to try to keep yourself relaxed, with your head down and your legs crossed as you sit o…
Diagnosis
- Although the vagal response can be experienced by a person in fine health, it is always a good idea to let your physician know if this has happened to you. Based on your symptoms and your medical history, your doctor will decide if further investigation is warranted.