Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Job Classification

In most duration tables, five job classifications are displayed. These job classifications are based on the amount of physical effort required to perform the work. The classifications correspond to the Strength Factor classifications described in the United States Department of Labor's Dictionary of Occupational Titles. The following definitions are quoted directly from that publication.

Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Colon Resection


How Procedure is Performed

A colon resection or colectomy is performed in the hospital as an inpatient procedure using general anesthesia. Preoperative examination includes assessing the cardiovascular, pulmonary, and renal function of the patient as well as routine laboratory studies. A colonoscopy is performed preoperatively to confirm the presence and location of polyps and malignant lesions. Computed tomography (CT) of the abdomen and pelvis usually is done. Colon lesions that are found on colonoscopy are biopsied either pre-operatively or during colectomy to stage possible malignancy.

Colectomies are classified according to the portion of the colon to be removed as well as the type of procedure used. If the right side of the colon is to be removed, the procedure is called a right hemicolectomy. If the part of the colon on the individual's left side is to be removed, it is known as a left hemicolectomy. A transverse colectomy is performed when the part of the colon that crosses from the right to the left side (transverse colon) is removed. In an anterior resection of the sigmoid colon, the part of the colon next to the rectum (sigmoid colon) is removed.

Two types of colon resection procedures are performed regularly, open and laparoscopic. The patient is placed lying face upward (supine), and a tube is inserted through the nose into the stomach (nasogastric tube) to remove gastric secretions. A Foley catheter is inserted into the bladder to divert urine during the surgery. In either procedure, the abdomen is cleansed with an antibacterial surgical scrub solution. In open procedures, an incision is made in the middle of the abdomen (midline). The small bowel is moved to the side of the abdomen and held in place with retractors. The colectomy needed is then performed through the midline incision. After removal of the diseased portion of the colon, the intestine is reconnected (anastomosed). The anastomosis may be either hand-sewn or stapled.

In laparoscopic colon resections, surgeons create four or five small openings, each about 0.5inch (1.5 cm) long in the abdomen. The laparoscope and ancillary equipment (camera, dissection tools) are inserted through the wounds, and the procedure is performed with visual guidance on a television monitor. In some cases, one of the small openings may be lengthened to 2 to 3 inches (5 to 7.5 cm) in order to complete the procedure.

With either procedure, the surgeon works down through abdominal tissues to the segment of the colon to be removed. It is loosened from surrounding tissues (dissected and mobilized), and the blood vessels that supply that part of the colon are identified and sealed off with electrocautery. Vessels that supply the remaining segments of the colon are closed off to prevent bleeding during the surgery. The diseased portion of the colon is removed. The healthy ends of the colon that remain usually are reconnected. (anastomosed). Sometimes the colon cannot be reconnected, and an artificial opening (colostomy) is required to divert the passage of waste outside the body. The colostomy can be temporary or permanent depending on the extent of the colon resection. Drain tubes may be placed to allow drainage of any secretions that accumulate. The incision is sutured closed, and dressings are placed over the incision.

Source: Medical Disability Advisor