Page 163 - JSOM Summer 2020
P. 163

(photo left) The West African Green Mamba (Dendroaspis viridis) is one of the most feared
                                       snakes in the region and is responsible for a large number of fatalities each year in countries like
                                       Guinea and Sierra Leone where they are commonly found. Green mambas are an arboreal species
                                       and prefer to live several meters above the ground in large trees with dense green foliage. Green
                                       mambas cause a severe and rapidly progressive neurotoxic syndrome that kills most victims
                                       within the first 2–6 hours from complete respiratory muscle paralysis. Many victims are bitten
                                       while climbing mango or palm trees to harvest fruit or collect jugs of palm wine.
                                       Photo compliments of Jordan Benjamin, Asclepius Snakebite Foundation.

                                                                                    (photo left) The leg of a young man
                                                                                    who arrived at the ASF Guinea clinic
                                                                                    18 hours after suffering a Rhinoceros
                                                                                    Viper (Bitis nasicornis) bite to his left
                                                                                    foot. Signs of the cytotoxic syndrome
                                                                                    (swelling, blistering, extensive tissue
                                                                                    destruction) and hemotoxic syndrome
                                                                                    (persistent bleeding and bruising along
                                                                                    the bitten limb) are clearly visible. This
                                                                                    patient was critically ill upon arrival but
                                                                                    ultimately made a full recovery after
                                                                                    receiving antivenom and aggressive
                                                                                    supportive care.
                                                                                    Photo compliments of Dr Nick Brandehoff,
                                                                                    Asclepius Snakebite Foundation.











      (photo above) Dried venom samples collected from hundreds of
      snakes over the years by Dr. Mamadou Cellou Baldé, founder and
      director of the ASF Guinea clinic.
      Photo compliments of Dr Nick Brandehoff, Asclepius Snakebite Foundation.
                                                                 (photos above) The patient above was bitten by a Rhinoceros Viper
                                                                 (Bitis nasicornis). These snakes rarely exceed 1 meter in length
                                                                 but have wide heads with large venom glands that enable them to
                                                                 inject massive doses of a potent cytotoxic and hemotoxic venom.
                                                                 Rhinoceros Viper venom can induce a profound hypotension and
                                                                 many patients die of cardiovascular collapse in the first hours after
                                                                 a bite.
                                                                 Photos compliments of Jordan Benjamin, Asclepius Snakebite Foundation.




      (photo top left) Another photo of the West African Green Mamba (Dendroaspis viridis), showing the typical coffin-shaped head that is
      characteristic of all mambas.
      (photo top right) Mount Kenya Bush Viper (Atheris desaixi). African bush vipers are small, seldom encountered arboreal vipers with a wide
      distribution throughout the tropical forests of equatorial Africa. Bush viper bites cause a cytotoxic syndrome +/– hemotoxicity. While there is
      no specific antivenom for bush vipers, they are closely related to the African carpet vipers (Echis spp.) and patients typically respond well to
      antivenoms that provide coverage against those species.
      Photos compliments of Jordan Benjamin, Asclepius Snakebite Foundation.


                                            (photo left) Dr Nick                                   (photo left)
                                            Brandehoff hands a                                     ASF founder
                                            syringe containing 2                                   Jordan Benjamin
                                            vials of reconstituted                                 administers a dose
                                            antivenom to Jordan                                    of reconstituted
                                            Benjamin at the ASF                                    polyvalent
                                            snakebite clinic in                                    antivenom by slow
                                            Kindia, Guinea.                                        intravenous push to
                                            Photo compliments of                                   a woman.
                                            Aziz Baldé, Asclepius                                  Photo compliments of
                                            Snakebite Foundation.                                  Aziz Baldé, Asclepius
                                                                                                   Snakebite Foundation.
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