Radiation therapy (RT) has improved life expectancy for many cancer patients. However, it is well known that RT has long-lasting side effects that can range from mild to severe. Breast cancer patients treated with RT are at risk of damage to any of the structures near to the breast. This includes the heart, lungs, […]
Radiation therapy (RT) has improved life expectancy for many cancer patients. However, it is well known that RT has long-lasting side effects that can range from mild to severe. Breast cancer patients treated with RT are at risk of damage to any of the structures near to the breast. This includes the heart, lungs, pericardium, skin, lymphatic vessels and nodes, and skeletal muscles. Today we are going to talk about the pericardium, what it is, how it may be affected/damaged in yoga therapy students, and how we can present a hatha yoga class to benefit and rehabilitate the pericardium.
What is the pericardium?
The pericardium is "a fibrous sac that attaches to the central tendon of the diaphragm and fuses with the adventitia of the great vessels superiorly." The great vessels are the large blood vessels that carry blood to a from the heart. The adventitia is the outermost layer of the wall of a blood vessel. So, the pericardium is:
A fibrous sac (two-walled, in fact, with fluid in the space between).
Attached to the central tendon of the diaphragm (the main muscle of breathing).
Fused with the outermost walls of the big blood vessels of the heart.
What does the pericardium do?
The pericardium has four functions.
It protects the heart from infections,
It protects the heart from knocks and jolts (this due to the fluid in the space between the two sacs),
It lubricates the heart and
It prevents excessive swelling of the heart in the case of a sudden increase in blood volume, which is usually associated with other illnesses or problems with sodium levels in the blood.
Unsurprisingly, given its roles, in Traditional Chinese Medicine, the pericardium is also referred to as the heart protector. The pericardium meridian runs down the inner arms, between the two tendons of the inner forearm, crosses the palm and then runs along the middle finger, terminating at its tip. Anyone who has treated secondary lymphoedema of breast cancer will observe that the affected areas coincide spectacularly with the pericardium meridian...
What happens to the pericardium during cancer treatment?
Spinal extensions, backbends, outwards arm rotations, held inhales, arm raises with inhales and basically anything that stretches the chest and moves the diaphragm will be therapeutic for the pericardium. However, as usual, there are limitations and contraindications that must be considered. A glance at this page is useful in that it demonstrates a number of poses that quite frankly could not be used in the classes that I give.
Firstly, recall that fibrosis is not reversible. It can be improved and loosened, but under normal circumstances, it is chronic. I mention this to help you pace your program and not expect miracles. I also warn strongly that overwork and tears are not desirable. So, work within your students' limits.
Referring back to the last page I mentioned, the "puppy dog pose" could be modified to a cat-cow sequence, breathing out with rounding the back and in when arching. Another typical viniyoga sequence is moving slowly between cat pose and child's pose.
Another typical sequence is alternating between standing on the tiptoes with the arms reaching up (keep to shoulder height in some cases, elbows may also need to bend, ideal is palms facing at the top) and a half-squat with a spinal twist. If you alternate sides and breathe in when you go up and out when you go down, you get a really nice loosening effect in the mid-trunk without really running risk of injury.
What can be interesting is using breath retentions to increase the lung volume and mobilise the intercostal and the serratus anterior muscles. Next week I will post a sequence that I use and love. Right now, I have to go. It's been a long post and I think that I have communicated what I set out to.
To yog is to live. Keep at it!!!