Scopolamine-dextroamphetamine is a combination of oral scopolamine and oral dextroamphetamine, and it has been studied for use in the space program.Alcohol and similar drugs accentuate the sedative effects of promethazine. The drug may impair the mental and physical abilities required to perform potentially hazardous tasks. Drowsiness is a prominent side effect, and it can be used as a sedative-hypnotic. Phenergan ® (promethazine) is a prescription drug chemically related to tranquilizers, and it also has antihistamine properties.A common side effect of this group is drowsiness, which might seriously impair a diver’s ability to perform safely. These medications include Dramamine ® (dimenhydrinate), Bonine ® (meclizine), Benadryl ® (diphenhydramine) and Marezine ® (cyclizine). The most commonly used medications are antihistamines, which are available without a prescription and share common side effects.Before taking a medication, read the information provided to understand potential side effects. There are a variety of medications that a diver could take to minimize symptoms and reduce risk. If visual contact is not possible, try keeping your eyes closed. Stay as low as possible while maintaining eye contact slightly above the horizon. To manage motion sickness, find the part of the vessel with the least up and down movement and stay there - usually that will be in the center of the vessel. The abrupt change can produce the same symptoms originally experienced upon going to sea. The brain becomes accustomed to the new input from increased motion, and upon returning to land the motion is no longer present. “Land sickness,” or mal de débarquement, occurs when you return to dry land after becoming adapted to an environment in constant motion. Other symptoms include dizziness, fatigue, burping, sweating, vomiting, excessive salivation and headaches.
If you have experienced motion sickness, you probably think of nausea as the primary symptom. Other possible factors include the role of Coriolis forces (forces due to the earth’s rotation), other nonphysiological stimuli, cerebrospinal fluid and the cerebellum. There is more to motion sickness than a mismatch of sensory inputs. These are often followed by nausea and vomiting.
Anxiety, confusion and dismay can result, leading to symptoms of yawning, pallor (paleness) and headache. The sensors of body position, however, send a different signal, and the brain may struggle to resolve the conflict. If you are below decks or have otherwise lost visual contact with the water/horizon, your eyes signal the brain that there is no motion. The vestibular balance apparatus of the ears detects motion and is stimulated by the repeated angular acceleration that occurs on a moving boat. There are people who are resistant to motion sickness, but sufficient angular acceleration will induce motion sickness in anyone in nearly any means of travel.Įven astronauts are annoyed by this problem: Approximately 70 percent of all crew members experienced some degree of motion sickness during the first 72 hours of orbital flight in the space shuttle. A lot is known about motion sickness, but our understanding of the cause is not perfect.
Everyone is susceptible it can happen to anyone if the circumstances are right. Motion sickness, or seasickness, ruins diving trips, vacations and travel for many.
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