Branching network of vessels that transports oxygenated blood to all body organs and tissues and then returns it to the heart for reoxygenation in the lungs
Peripheral-Vascular System
Delivers blood to all areas of the body
Blood flows through arteries, veins, and capillaries
Measured by pulse and pressure
Adequate perfusion to vital organs and extremities is essential to life
Disruption in the Peripheral-Vascular System
Can cause significant pain, loss of limb, or even death
Lymphatic System
Complements the function of the vascular system
Collects and drains excess tissue fluid that accumulates from the cardiovascular system and returns this fluid to the heart
Lymphatic System
Helps the heart and peripheral vasculature maintain adequate circulation
Lymphatic dysfunction may result in reduced range of motion, permanent disfigurement, and susceptibility to infection
Responsible for movement of lymph fluid, development and maintenance of the immune system, and reabsorption of fat and fat-soluble substances from the small intestine
Structures of the Lymphatic System
Lymph
Lymphatic Capillaries
Lymphatic Vessels
Lymph Nodes
Tonsils
Thymus
Spleen
Peyer's Patches
Functions of the Lymphatic System Structures
Lymph - Excessive fluid from body tissue that has drained into lymphatic capillaries
Lymphatic Capillaries - Collects fluid from interstitial space and surrounding tissue
Lymphatic Vessels - Drain lymph back to right lymphatic duct and thoracic duct
Lymph Nodes - Filter microorganisms and foreign substances from lymph
Tonsils - Destroy microorganisms and foreign substances at beginning of digestive and respiratory tracts
Thymus - Forms antibodies in newborn and developing immune system, secretes thymosin to help T-cell differentiation
Spleen - Filters blood and produces lymphocytes and monocytes
Peyer's Patches - Respond to antigens by producing antibody
Lymphatic System
Depends on the cardiovascular system, contraction of smooth muscles within lymphatic vessels, and skeletal muscle contraction to pump lymph throughout the body
Obstruction of lymphatic system flow
Lymph may diffuse into the vascular system or collateral channels (to provide alternate routes) may develop
Infection in the lymphatic system can occur at any age
When assessing the peripheral-vascular and lymphatic systems
Begin by asking for the person's chief complaint
You may need to ask which symptom is the most bothersome
Major vascular symptoms to watch for
Swelling
Limb pain
Changes in sensation of an extremity
Always ask about fever, fatigue, and lumps when evaluating the lymphatic system
The past health history can provide direct links to the patient's present health status
The family history identifies any causative factors that may lead to problems with the peripheral-vascular or lymphatic system
The cause of lymphomas, lymphosarcoma, and cancer of the lymph glands is unknown
A complete review of systems is an essential component of the assessment
The psychosocial profile reveals patterns in the patient's life that may affect the health of their peripheral-vascular and lymphatic systems
Before examining the peripheral-vascular and lymphatic systems, review the location of pulse sites, and remember that the lymphatic system drains toward the center of the body
Keep key history findings, especially the chief complaint, in mind as you assess
Tools for examination of the peripheral-vascular and lymphatic systems
Stethoscope
Sphygmo-manometer
Flashlight
Ruler
Non-stretchable tape measure
You may be able to combine the peripheral-vascular and cardiovascular physical assessments
Physical assessment of the lymphatic system is usually integrated into the assessment of other body systems
A head-to-toe approach is suggested to incorporate the peripheral-vascular and lymphatic systems
Be alert for signs of an acute illness or chronic problem when performing a general survey
Observe for edema, which is associated with peripheral-vascular or lymphatic disease
Abnormal posture, gait, and movements may signal an autoimmune disease
Elevated temperature may indicate an infection; changes in blood pressure and pulse may indicate a cardiovascular problem
Assessment techniques for upper extremities
Inspect color, lesions, edema
Test capillary refill
Normal variations for upper extremities
Skin color uniform
Fingernails of equal thickness
Positive brisk capillary refill less than 2 to 3 seconds
No edema, erythema, red streaks, or skin lesions
Abnormal findings for upper extremities
Delayed capillary refill time
Edema
Lymphedema secondary to mastectomy
Intermittent pallor and cyanosis of hands and fingers
Ischemic changes and gangrene of hands and fingers
Streaky redness, tenderness, warmth along course of a vein
Assessment techniques for abdomen
Inspect arterial pulsations over the abdominal aorta