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.

Toxic Effects, Organophosphate and Carbamate Pesticides


Related Terms

  • Carbaryl Exposure
  • Dichlorvos Exposure
  • Malathion Exposure
  • Parathion Exposure
  • Phorate Exposure
  • Phosdrin Exposure

Differential Diagnosis

Specialists

  • Medical Toxicologist
  • Pharmacologist
  • Preventive Medicine Specialist

Factors Influencing Duration

Absorbed dose is the primary determinant of the severity of toxic effects and therefore the severity and duration of disability. Absorbed dose depends on environmental levels, routes of exposure (skin contact, inhalation, ingestion), and duration of exposure.
The period of observation can vary from several hours for the asymptomatic individual to at least 48 hours of hospitalization in symptomatic cases. Recovery periods can vary from a few days to almost a year.
Other factors influencing disability include pre-existing disease, age, pregnancy, and allergy, all of which affect individual susceptibility to the toxic effect of chemical exposures and the individual's ability to recover functional capacity and return to work. Psychological and emotional factors may also play a role in the extent and duration of disability.

Medical Codes

ICD-9-CM:
989.3 - Toxic Effects, Organophosphate and Carbamate Pesticides

Treatment

There are four steps in the effective treatment of organophosphate/carbamate poisoning. First, emergency personnel should support respiration with suction, oxygen, and intubation as indicated.

Second, medical workers should decontaminate the individual by removing clothing and washing the skin, hair, and fingernails with soap and water (mild intoxication has progressed to life-threatening disease because of continued absorption from clothes or skin). If ingestion is the route of exposure, induced vomiting (only before onset of significant symptoms), gastric lavage, and administration of charcoal/saline cathartic may be indicated. Health care personnel should be careful to avoid contamination from the patient.

Third, specific antidotes may be administered. Poisoning with these chemicals is one of the few situations in which antidote therapy can be lifesaving. Two different drugs are effective and can be used in combination: atropine and 2-PAM (pralidoxime). Massive doses of atropine may be required and may help confirm the diagnosis. The use of 50 mg in 24 hours is not unusual. The goal is to titrate the dose versus the individual's signs until a mild "atropinization" is observed (flushing of the skin, dilated pupils, drying of secretions, and rapid heartbeat). Use of 2-PAM (pralidoxime) is indicated in all significant organophosphate poisonings (it is usually unnecessary in cases of carbamate poisoning). To be effective, it must be given within the first 12 to 24 hours after exposure.

Fourth, continued observation of the poisoned individual is vital. Symptoms may progress during the first 24 to 48 hours due to delayed absorption from the skin or GI tract.

Source: Medical Disability Advisor






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