Kai Chen Ph.D. in Chinese Medicine

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Stroke (Cerebrovascular Accident)

Introduction                 

Stroke is a focal neurological deficit due to a vascular lesion resulting from intracerebral hemorrhage (20%) and ischemic diseases (thrombosis, embolism, or vascular insufficiency), which is most common reason (80%).  Thrombosis is the most common cause of stroke in middle-aged and elderly, among whom there is a higher incidence of atherosclerosis, diabetes, and hypertension.  Thrombosis causes ischemia in brain tissue supplied by the affected vessel as well as congestion and edema.  Hemorrhage results from chronic hypertension or aneurysms, which cause sudden rupture of a cerebral artery.  The rupture diminishes blood supply to the area served by this artery and the hematoma further compresses neural tissue.  Thrombosis the onset usually occurs more gradually -- over minutes to hours; on rare occasions it progresses over days to weeks. The symptoms for an ischemic stroke are extremely variable depending on the area of the brain that has been affected. The most common symptom is weakness or paralysis of one side of the body or the other. There may be partial or complete loss of voluntary movement of and/or sensation in a leg and/or arm. A stroke can result in speech problems and weak muscles of the face, which can cause drooling. Numbness or tingling is very common. Other symptoms include dizziness, vomiting, loss of muscle tone, major seizures, and possibly coma. Hemorrhage typically begin very suddenly and evolve over several hours and include headache, nausea and vomiting, and altered mental states. When the hemorrhage is a subarachnoid type, warning signs (abrupt headaches, nausea and vomiting, sensitivity to light, and various neurologic abnormalities) can occur from the leaky blood vessel a few days to a month before the aneurysm fully develops and ruptures. When the aneurysm ruptures, the stroke victim may experience a terrible headache, neck stiffness, vomiting, confusion, and altered states of consciousness. The eyes may become fixed in one direction or lose vision. Stupor, rigidity, and coma can result. Diagnosis of stroke is based on observation of clinical features, a history of risk factors, and results of diagnostic test, such as CT, MRI and lumber puncture, etc.  

TCM etiology and Pathology

In TCM, both of hemorrhage and ischemic diseases is diagnosed as Zhong Feng (Wind stroking) and the treatments are similar, therefore they are discussed together.  In the acute stage, based on the symptoms, it can be divided two types: Zhong Zang Fu (wind attacking visceral) and Zhong Jing Luo (wind attacking channels and collaterals), the former is severe, often loss consciousness, the later is not serious, perhaps hemiplegia but not loss consciousness.

1. Emotion changes

 2. Diet disorders

 3. Deficient constitutions 

4. Weather changes

 In the acute or middle-aged patients, the illness often is excessive and in the chronic or senior often is deficient with excessive syndromes.  The excessive may be fire, internal wind that is hyperactivity liver yang, phlegm or blood stasis.  The deficient may be qi or yin deficiency.  Blood stasis is basic pathological change in the late stage, because any reason finally causes blood circulation disorder.

TCM differentiation and treatment

1. Acute stage

1. 1. Wind-stroke attacking the visceral

1.1.1.  Obstructive type

Clinical manifestation: Sudden onset, loss consciousness, clenched jaws, flushed face, coarse breathing, or rattling in the throat, red tongue with yellow fur, taut and forceful pulse

Treatment principle: Bring back resuscitation, quenching the wind, removing phlegm

Herbal prescription: Ling Jiao Gou Teng Tang (Decoction of Antelope horn and Uncaria stem)

Acupuncture Renzhong (DU 26), Laogong (PC 8), Taichong (LR 3), Yangquan (K1), Fenglong (ST 40), 12 channels Jing (well) points

1.1.2 Collapsing type

Clinical manifestation: Sudden onset, loss consciousness, incontinence of urine and loose, cold and flaccid paralysis limbs, shallow and weak breath, flaccid tongue, weak and deep pulse

Treatment principle: Reinforcing yang and qi, bring back resuscitation  

Herbal prescription: Shenfu Tang (Decoction of ginseng and aconite) and Shengmaiyin (Pulse-activating powder)

Acupuncture: Shenque (RN 8), Qihai (RN 6), Guanyuan (RN 4)  

1. 2. Wind-stroke attacking the channels and collaterals

Compared with wind attacking the organs, this type is mild.  The main symptoms are hemiplegia, or limbs numbness and weak, or slurring speaking, etc, but not loss consciousness, most is thrombosis, some hemorrhage.

1.2.1 Hyperactivity yang with yin deficiency

Clinical manifestation: Often headache, or vertigo, or tinnitus, sudden onset, but not loss consciousness, hemiplegia, numbness or weak of limbs, deviated tongue, slurring of speech, and red tongue with white or yellow fur, taut and slippery pulse  

Treatment principle: Tonifying Kidney yin and subduing liver yang

Herbal prescription: Tianma Gouteng Yin (Decoction of Gastrodia and Uncaria)

Acupuncture: Fengchi (BL20), Waiguan (SJ5), Taichong (Liv2),Taixi (KI3)

1.2.2 Wind mixed with phlegm blocking channels  

Clinical manifestation: Sudden onset, but not loss consciousness, hemiplegia, numbness or weak of limbs, deviated tongue, slurring of speech, or headache and dizziness, or profuse sticky phlegm, or constipation, red tongue with yellow greasy fur, taut and slippery pulse

Treatment principle: Draining phlegm and subduing liver wind

Herbal prescription: Modified Xingluo Chengqi Tang (Decoction for purging down digestive qi with arisaema tuber with bile and trichosanthes fruit)

Acupuncture: Baihui (DU20), Hegu (LI4), Quchi (LI11), Yanglingquan (GB34), Fenglong (ST40)

2. Recovery and sequela stages

In the clinic, those two stages diagnosis and treatment are similar. The pathological changes mainly are two: long term illness leading qi deficiency, showed as body weak and fatigue, and blood stasis in the channels, manifested as hemiplegia and other function disability, also might be phlegm blocking or liver yang hyperactivity or kidney deficiency.

 2.1 Hemiplegia

Clinical manifestation: Hemiplegia, numbness or weak of limbs, deviated tongue, slurring of speech, pale tongue with white fur, weak and thin pulse in the ill side arm

Treatment principle: Tonifying qi and promoting blood circulation to open the channels  

Herbal prescription Buyang Huanwu Tang (Decoction of Invigorating Yang for Recuperation)

Acupuncture:

Upper limb: Jianyu (LI 15), Quchi (LI 11), Waiguan (SJ 5), Hegu (LI 4), Waiguan (SJ5), Neiguan (PC6), Daling (PC7)

Lower limb: Huantiao (GB 30), Yanglingquan (GB 34), Fengshi (GB 31), Zusanli (ST 34), Sanyinjiao (SP6), Fengshi (GB31), Yinlingquan (SP9), Weizhong (BL40)

Deviation of the eye and mouth : Jaiche (ST 6), Dicang (ST 4), Xiaguan (ST 7), Hegu (LI 4) and Taichong (LR 3)

2.2 Speaking ability damaged

Clinical manifestation: Remarkable slurring speech or dyslalia, or hemiplegia, or numbness or weak of limbs, or deviated tongue, light red tongue with white greasy fur, taut pulse     

Treatment principle: Dispersing wind-phlegm and opening the orifice    

Herbal prescription Jieyu Dan (Pill of relieving aphasia)

Acupuncture: Lianquan (RN 23), Yamen (DU15), Tongli (HT5), Hegu (LI4)

Copyright by Kai Chen Ph.D. in Chinese Medicine