How to manage Scombroid Poisoning
Cause
Scombroid poisoning follows eating contaminated fish of the scombroid family and includes mackerel, tuna, albacore, swordfish and bonito. The muscle of all these fish is rich in the amino acid histidine. Contamination due to improper preservation or canning allows bacteria entrance to the flesh of the fish. These bacteria break the histidine down to a poisonous amine called saurine, which has many of the properties of histamine.
Presentation
Scombroid poisoning follows eating contaminated fish of the scombroid family and includes mackerel, tuna, albacore, swordfish and bonito. The muscle of all these fish is rich in the amino acid histidine. Contamination due to improper preservation or canning allows bacteria entrance to the flesh of the fish. These bacteria break the histidine down to a poisonous amine called saurine, which has many of the properties of histamine.
Presentation
- The affected fish has a characteristic sharp, peppery taste and must be discarded immediately.
- A mixture of allergic-type reactions occurs following ingestion:
~ Migraine
~ Urticaria
~Asthma
~ Gut irritation
- The victim develops an intense headache, with nausea and vomiting, an intensely itchy spreading rash, tightness of the chest with wheezing, palpitations, abdominal pain and diarrhoea; and circulatory shock can occur.
Prevention
The condition can be avoided by prompt freezing or eating the fish after catching it. Do not allow your mackerel or tuna catch to stand in the sun all day.
Treatment
TIP
Do not inject adrenalin directly into the bloodstream.
NOTE
Adrenaline and hydrocortisone are emergency life-saving drugs and may only be considered when it is impossible to obtain any trained help. These medications are being given without expert opinion and offer only a hope of success in extreme circumstances.
The condition can be avoided by prompt freezing or eating the fish after catching it. Do not allow your mackerel or tuna catch to stand in the sun all day.
Treatment
- Induce vomiting as soon as possible unless the diver has already vomited or is very agitated by severe breathing difficulty. Emetics include ipecacuanha, drinking a glass of strong salt water or simply using a finger in the throat. Vomiting will reduce the amount of toxin absorbed.
- Obtain medical help urgently.
- Antihistamines must be given, preferably by injection.
- Acute breathing difficulties due to sudden severe asthma or sudden circulatory collapse and shock are medical emergencies. A doctor or emergency paramedic service must be summoned.
- If the diver is in a remote place with no recourse to any medical help: inject adrenaline 1:1 000 subcutaneously at a dose of 0.1 m/kg body mass, very slowly over five minutes. Draw back on the syringe before injecting to ensure that a blood vessel has not been entered by the needle. Do not inject adrenaline directly into a blood vessel! Automatic adrenaline injection kits are available (e.g. Epipen).
- Monitor the pulse continuously. It will become forceful and accelerate as the injection is given. If it rises above 120 beats per minute, stop injecting and wait until the pulse settles.
- Watch the diver’s face. It will become extremely pale due to the vasoconstrictive effect of adrenaline.
- Monitor respiration continuously. Be prepared for CPR.
- Inject 2 000 mg of hydrocortisone intramuscularly into the upper outer quadrant of the buttock muscle.
- Administer CPR if breathing and heart function fail.
TIP
Do not inject adrenalin directly into the bloodstream.
NOTE
Adrenaline and hydrocortisone are emergency life-saving drugs and may only be considered when it is impossible to obtain any trained help. These medications are being given without expert opinion and offer only a hope of success in extreme circumstances.
Posted in Dive Safety Tips
Posted in health, Scombroid Poisoning, histidine, Amino acids, Gutt irritations
Posted in health, Scombroid Poisoning, histidine, Amino acids, Gutt irritations
Categories
2024
February
March
April
May
October
My name is Rosanne… DAN was there for me?My name is Pam… DAN was there for me?My name is Nadia… DAN was there for me?My name is Morgan… DAN was there for me?My name is Mark… DAN was there for me?My name is Julika… DAN was there for me?My name is James Lewis… DAN was there for me?My name is Jack… DAN was there for me?My name is Mrs. Du Toit… DAN was there for me?My name is Sean… DAN was there for me?My name is Clayton… DAN was there for me?My name is Claire… DAN was there for me?My name is Lauren… DAN was there for me?My name is Amos… DAN was there for me?My name is Kelly… DAN was there for me?Get to Know DAN Instructor: Mauro JijeGet to know DAN Instructor: Sinda da GraçaGet to know DAN Instructor: JP BarnardGet to know DAN instructor: Gregory DriesselGet to know DAN instructor Trainer: Christo van JaarsveldGet to Know DAN Instructor: Beto Vambiane
November
Get to know DAN Instructor: Dylan BowlesGet to know DAN instructor: Ryan CapazorioGet to know DAN Instructor: Tyrone LubbeGet to know DAN Instructor: Caitlyn MonahanScience Saves SharksSafety AngelsDiving Anilao with Adam SokolskiUnderstanding Dive Equipment RegulationsDiving With A PFOUnderwater NavigationFinding My PassionDiving Deep with DSLRDebunking Freediving MythsCryptic FishImmersion Pulmonary OedemaSwimmer's EarMEMBER PROFILE: RAY DALIOAdventure Auntie: Yvette OosthuizenClean Our OceansWhat to Look for in a Dive Boat
2023
January
March
Terrific Freedive ModeKaboom!....The Big Oxygen Safety IssueScuba Nudi ClothingThe Benefits of Being BaldDive into Freedive InstructionCape Marine Research and Diver DevelopmentThe Inhaca Ocean Alliance.“LIGHTS, Film, Action!”Demo DiversSpecial Forces DiverWhat Dive Computers Don\'t Know | PART 2Toughing It Out Is Dangerous
April
July
August