The Emergency Medical Technician (EMT) credential has the following other requirements: 1  Candidates must be 18 years of age or older. 2  Candidate must have a current CPR-BLS for Healthcare Providers or equivalent credential.
Swelling in the extremities is often caused by idiopathic edema or excess salt consumption. Swollen hands and feet are commonly caused by idiopathic edema, which is usually not serious. Swollen hands may be a sign of heart disease. Prolonged periods of physical inactivity may cause swollen hands and feet. Reducing salt consumption, for example, eliminating salty snacks can aleviate swelling.
Other causes of numb hands may include: 1  Nutritional deficiencies, such as vitamin B1 deficiency. 2  Multiple sclerosis. 3  Stroke. 4  Disorders of the brain and spinal cord.