Ralph –
Discussions about postural and positional triggers of arrhythmia must include the vagus nerve and the GI is definitely involved.
Numerous factors influence vagus nerve irritation. One consideration is to address your posture and sitting habits and the impact of sitting for hours at a time - as many do - working at a computer station…or your home desk or sitting scrunched on the couch with a laptop. Sitting continually, for long stretches, causes a myriad of problems aggravated by:
• Adiposity in the midsection.
• Weak Core muscles
• When heavy meals are eaten and the stomach is full or distended and then, followed by more sitting that scrunches the midsection
• Full stomach or one that becomes bloated with gas after eating and exerts pressure and displacement of surrounding organs and pushes upward on the diaphragm muscle.
When a nerve is pinched or trapped, it’s called ‘impingement.’ Impingement of the vagus is well-known and afibbers are typically very familiar with postural triggers of AF. Sometimes it’s bending over from the waist; other times lying down in a supine position allows for the positional shift of the stomach and diaphragm which pinches the vagus.
The check anatomy diagram at this link…showing organ placement and note how everything is neatly compressed into the abdominal cavity. It’s easy to see how the stomach could exert upwards pressure on the diaphragm which is the dividing muscle that between the chest cavity and the abdominal cavity In this illustration… only half the diaphragm is shown, but it covers both right and left sides in real life. Note that there are no abdominal fat accumulations fat added to the photo so you have to envision how fat accumulations affect the crowding of those organs… and then envision what poor posture, stomach gas, bloating and distension would exert pressure, push organs out of place and for this topic, cause the vagus nerve to be pinched and irritated. [
www.webmd.com]
The Vagus nerve is the Tenth Cranial Nerve and is called “The Wanderer” because of its extensive length and pathways to various organs. Wikipedia offers a particularly elaborate description complete with dissection photos. [ [
en.wikipedia.org] ] If you are prone to AF triggered by positional changes, it would be useful spend time looking at the medical diagrams of the path of the vagus and branches so you can envision what happens.
The vagus comes out of the brain, enters the body in the area of upper cervical spine area and is extremely vulnerable to subluxation or spinal misalignment. Starting in the area of the Atlas (bone) which is the first cervical vertebrae or C1, anything out of alignment there, affects everything downstream. [
en.wikipedia.org])
The vagus nerve directly innervates the heart, larynx bronchi and lungs, esophagus, stomach, small intestine, abdominal blood vessels, liver, gall bladder, pancreas, colon is the link between the vagus and pelvic parasympathic, rectum, kidney, bladder and external genitalia. Branches from the main nerve, when impinged or distorted by various pressures, cause problems in other areas (referred), but track directly back to the vagus. Example… a mal-aligned Temporomandibular joint (TMJ) causes impingement on the branch of the vagus that goes to the ear..causing not only TMJ pain but also ear involvement..(maybe tinnitus). So, it is with the vagus and all the vagal branches.
Impingement or pinching of the vagus nerve anywhere weakens the body.
The Vagus is a parasympathetic nerve and impingement alters the function of the vagus in its entirety and can affect the heart, lungs, liver, gallbladder, spleen, pancreas, small and large intestines, thyroid and primitive brain-stem medulla. (Baroody)
As this all relates to a true Hiatal Hernia or can be symptoms of the HH syndrome when movement the stomach up into the diaphragm pinches or crowds the vagus nerve. Symptoms are likely to be the result of postural changes… such as lying down or middle-of-the-night shifting that cause symptoms such as afib and shortness of breath, gastric distress. The vagus goes down beside the stomach and when the stomach is malpositioned or abnormally distended, the vagus can be pinched.
Those who address the vagus involvement in their clinical practices are typically chiropractic physicians, and acupuncturists who treat nerve pathway obstructions. Their world revolves around the body’s energy flow through meridian pathways and spinal alignment to ensure that the muscles and organs served by the Autonomic Nervous System (ANS) are not blocked or impeded. Blocked energy flow or electrical signals affect affect every cell and every organ in the body and interrupts communication with other cells and organs… so it makes sense that if afibbers have impingement on the vagus, all of the other pathways can be adversely affected to one degree or another.
No one discusses the function of the vagus nerve more completely than Steve Rochlitz, PhD who has written prolifically about his clinical experiences treating patients with vagus nerve involvement. Whether this involves a true hiatal hernia or the Hiatal Hernia Syndrome complex, or the crowding or impingement on the vagus, Dr. Rochlitz who is Physicist, Nutritionist and Kinesiologist addresses every aspect in his prolific writings much of which is found online..
Quote Clips of interest from Dr. Rochlitz’s articles on Hiatal Hernia/Vagus Nerve Impingement Syndrome
….”The Vagus Nerve, like the hiatal hernia itself, probably needs time to heal and for everything to be done right for a span of several months. Soda with the extra gas it contains should be avoided. Trapped gas makes this syndrome much worse. Indeed the sufferer may have episodes of feeling as if dying only to be relieved by belching or perhaps the gas passes down the other way unnoticeably. Likewise when the practitioner pulls the stomach down, much gurgling is often audible. One hundred years ago, medical schools taught Roemheld's, (or Gastro-Cardiac), Syndrome which described significant cardiac complaints arising from stomach problems. Unfortunately, this now seems to have disappeared from all but the homeopathic, medical literature.”
"The heart itself can be crowded, and pressed on, by the stomach being “where it doesn't belong.” These last factors and the direct hyperexcitability of the Vagus Nerve's connection to the heart, leads to many Emergency Room visits and “pseudo-heart attack” symptoms of chest pain, difficulty breathing and left arm numbness. (The reader, if experiencing these complaints, should seek emergency medical care, and not assume they are arising from the HHS.)"
"There is a remarkable similarity between Hiatal Hernia Syndrome and angina. Both can cause similar symptoms and both can occur after similar events such as overeating, exercise, and heavy lifting.(The appropriate) examination also looks for the potentially, dangerous pre-cancerous, esophageal condition called Barrett's Esophagus, which can occur after long-term GERD."
"From an imbalanced Vagus Nerve, any other organ can begin to malfunction depending on genetic weakness and various other factors. Of course, the diaphragm itself will directly be affected and breathing normally no longer occurs. Other openings in the diaphragm itself now stretched or torn allow the major blood vessels to and from the heart to pass through it. Thus spasms in the abdominal aorta and inferior vena cava can occur. Indeed, Baroody found kinesiological (muscle) tests for two separate “stuck diaphragm” conditions related to abdominal aorta and inferior vena cava imbalances4."
Dr. Rochlitz also details "Schatzki's ring which is a disorder of the Lower Esophageal Sphincter (LES). He also discusses the influence of the Longitudinal Muscle Contraction (LMC) of the esophagus and how relates that connection to trigger points, which may be created directly, or indirectly, by mercury or other heavy metals or other toxins. The active trigger points then could cause the Esophageal LMC as trigger points are deeply entwined with muscle spasm.”
Any and all of which could contribute to postural or positional triggers for AF.
Jackie
These are a few links to reports by Dr. Rochlitz:
Hiatal Hernia/Vagus Nerve Disorder: a leading cause of allergies & chronic illness
Letters to the Editor - Letter to the Editor
Townsend Letter for Doctors and Patients, Jan, 2004 by Steven Rochlitz
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