types of chronic pain, including back pain, neck pain, joint pain, and fibromyalgia. The benefits of physiotherapy for chronic pain management are numerous, including reduced pain intensity, improved mobility, and increased flexibility.
The Benefits Of Physiotherapy for chronic pain management
types of chronic pain, including back pain, neck pain, joint pain, and fibromyalgia. The benefits of physiotherapy for chronic pain management are numerous, including reduced pain intensity, improved mobility, and increased flexibility.
physiotherapist role
Health benefits of apple
Cardiac Cycle
Cardiac Cycle
The cardiac cycle consists of two interrelated phases: systole, the contraction phase, and diastole, the filling phase. During diastole, the ventricles fill with blood from the atria via open atrioventricular valves. he 526 SECTION II Intervention Strategies for Rehabilitation Coronary circulation. (A) left main (LM); (B) left anterior descending (LAD); (C) left circumlex (CX); (D) right coronary (RCA); (E) posterior descending (PDA).
The branches of the LAD are known as diagonals; the branches of the CX are known as marginals. atrioventricular valves lie between the atria and the ventricles and include the tricuspid valve on the right and mitral valve on the left. he first two-thirds of ventricular filling is passive; during the last one-third the atria contract and push the blood into the ventricles. his contraction is known as the atrial kick. After the atrial kick, diastole ends and the atrioventricular valves close. Systole begins with both the atrioventricular and semilunar valves closed. An initial isovolumetric contraction, similar to an isometric contraction of striated muscle, increases the pressure within the ventricles, and the semilunar valve opens. he LV then undergoes a concentric contraction, causing a volume to be ejected, termed the stroke volume (SV). After the SV is ejected, the aortic valve closes and systole is complete. he cardiac cycle is defined by the presence of normal heart sounds, S1 and S2. Heart sounds are associated with valvular closings; S1 is associated with atrioventricular valve closure, and S2 is associated with semilunar valve closure. Systole occurs between S1 and S2, and diastole occurs between S2 and S1
EPIDEMIOLOGY AND ETIOLOGY OF STROKE
Stroke is the fourth leading cause of death and the leading cause of long-term disability among adults in the United States. An estimated 7,000,000 Americans older than 20 years of age have experienced a stroke. Each year approximately 795,000 individuals experience a stroke; approximately 610,000 are first attacks and 185,000 are recurrent strokes.
WHAT IS STROKE ?
Stroke (cerebrovascular accident [CVA]) is the sudden loss of neurological function caused by an interruption of the blood flow to the brain. Ischemic stroke is the most common type, affecting about 80% of individuals with stroke, and results when a clot blocks or impairs blood flow, depriving the brain of essential oxygen and nutrients.
Hemorrhagic stroke occurs when blood vessels rupture, causing leakage of blood in or around the brain. Clinically, a variety of focal deficits are possible, including changes in the level of consciousness and impairments of sensory, motor, cognitive, perceptual, and language functions. To be classified as stroke, neurological deficits must persist for at least 24 hours. Motor deficits are characterized by paralysis (hemiplegia) or weakness (hemiparesis), typically on the side of the body opposite the side of the lesion. he term hemiplegia is often used generically to refer to the wide variety of motor problems that result from stroke. he location and extent of brain injury, the amount of collateral blood flow, and early acute care management determine the severity of neurological deficits in an individual patient. Impairments may resolve spontaneously as brain swelling subsides (reversible ischemic neurological deficit), generally within 3 weeks. Residual neurological impairments are those that persist longer than 3 weeks and may lead to lasting disability. Strokes are classified by etiological categories (thrombosis, embolus, or hemorrhage), specific vascular territory (anterior cerebral artery syndrome, middle cerebral artery syndrome, and so forth), and management categories (transient ischemic attack, minor stroke, major stroke, deteriorating stroke, young stroke)Heart Valves
HEART DISEASE
CARDIAC ANATOMY AND PHYSIOLOGY OF HEART
HEART TISSUE
CORONARY ARTERIES
Heart Valves ;
Four heart valves ensure one-way blood flow through the heart. Two atrioventricular valves are located between the atria and ventricle. The atrioventricular valve, positioned between the RA and RV, is termed the tricuspid valve; the left atrioventricular valve is the mitral valve (also known as the bicuspid valve), located between the left atrium and ventricle. he semilunar valves lie between the ventricles and arteries and are named based on their corresponding vessels (i.e., pulmonic valve on the right in association with the pulmonary artery, and aortic valve on the left relating to the aorta).
Flaps of tissue called leaflets or cusps guard the heart valve openings. he right atrioventricular valve has three cusps and is therefore termed tricuspid, whereas the left atrioventricular valve has only two cusps and hence is termed bicuspid. These leaflets are attached to the papillary muscles of the myocardium by chordae tendineae. the primary function of the atrioventricular valves is to prevent backflow of blood into the atria during ventricular contraction or systole, while the semilunar valves prevent backflow of blood from the aorta and pulmonary artery into the ventricles during diastole. Opening and closing of each valve depends on pressure gradient changes within the heart created during each cardiac cycle.
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