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Mansa Musa was the ruler of the Mali Empire in West Africa. Details recorded here should be sourced; unknown information is left blank.
MORE →Reflects the personal views, recollections, and perspective of the author, Mike Davis.
This is a personal recollection on the Move fire on May 13, 1985
In medicine, a contraindication is a condition (a situation or factor) that serves as a reason not to take a certain medical treatment due to the harm that it would cause the patient.[1][2] Contraindication is the opposite of indication, which is a reason to use a certain treatment.
Absolute contraindications are contraindications for which there are no reasonable circumstances for undertaking a course of action (that is, overriding the prohibition). For example:
Relative contraindications are contraindications for circumstances in which the patient is at higher risk of complications from treatment, but these risks may be outweighed by other considerations or mitigated by other measures. For example, pregnant individuals should normally avoid getting X-rays, but the risk from radiography may be outweighed by the benefit of diagnosing (and then treating) a serious condition such as tuberculosis.
Another principal pair of terms for relative contraindications versus absolute contraindications is cautions versus contraindications, or (similarly) precautions versus contraindications: these pairs of terms are respectively synonymous. Which pair is used depends on nomenclature enforced by each organization's style. For example, the British National Formulary uses the cautions versus contraindications pair, and various U.S. CDC webpages use precautions versus contraindications. The logic of the latter two styles is the idea that readers must never be confused: the word contraindication in that usage always is meant in its absolute sense, providing unmistakable word-sense disambiguation.
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Source: Wikipedia. Article content is retrieved live through the MediaWiki API.
In medicine, a contraindication is a condition (a situation or factor) that serves as a reason not to take a certain medical treatment due to the harm that it would cause the patient. Contraindication is the opposite of indication, which is a reason to use a certain treatment. Absolute contraindications are contraindications for which there are no reasonable circumstances for undertaking a course of action (that is, overriding the prohibition). For example: Children and teenagers with viral infections should not be given aspirin because of the risk of Reye syndrome. A person with an anaphylactic food allergy should never eat the food to which they are allergic. A person with hemochromatosis should not be administered iron preparations. Some medications are so teratogenic that they are absolutely contraindicated in pregnancy; examples include thalidomide and isotretinoin. Relative contraindications are contraindications for circumstances in which the patient is at higher risk of complications from treatment, but these risks may be outweighed by other considerations or mitigated by other measures. For example, pregnant individuals should normally avoid getting X-rays, but the risk from radiography may be outweighed by the benefit of diagnosing (and then treating) a serious condition such as tuberculosis. Another principal pair of terms for relative contraindications versus absolute contraindications is cautions versus contraindications, or (similarly) precautions versus contraindications: these pairs of terms are respectively synonymous. Which pair is used depends on nomenclature enforced by each organization's style. For example, the British National Formulary uses the cautions versus contraindications pair, and various U.S. CDC webpages use precautions versus contraindications. The logic of the latter two styles is the idea that readers must never be confused: the word contraindication in that usage always is meant in its absolute sense, providing unmistakable word-sense disambiguation.
Contraindications to breastfeeding are those conditions that could compromise the health of the infant if breast milk from their mother is consumed. Examples include galactosemia, untreated HIV, untreated active tuberculosis, Human T-lymphotropic virus 1 or II, uses illicit drugs, or mothers undergoing chemotherapy or radiation treatment. Breastfeeding contraindication are situations where the mother has conditions such as an addiction or disease that would make it harmful to the baby, should the baby be breastfed. Breast milk contains many nutrients that formulas in store shelves do not have which makes breast feeding a healthier and ideal way to feed an infant.[3]
Ayahuasca is a South American psychoactive decoction prepared from Banisteriopsis caapi vine and a dimethyltryptamine (DMT)-containing plant, used by Indigenous cultures in the Amazon and Orinoco basins as part of traditional medicine and shamanism. The word ayahuasca, originating from Quechuan languages spoken in the Andes, refers both to the B. caapi vine and the psychoactive brew made from it, with its name meaning 'spirit rope' or 'liana of the soul'. Although often portrayed as ancient, ayahuasca likely spread across the western Amazon only within the past few centuries; the first clear written accounts appear in the 17th century. The specific ritual use of ayahuasca was widespread among Indigenous groups by the 19th century. Ayahuasca is traditionally prepared by macerating and boiling B. caapi with other plants like Psychotria viridis during a ritualistic, multi-day process. Ayahuasca has been used in diverse South American cultures for spiritual, social, and medicinal purposes, often guided by shamans in ceremonial contexts involving specific dietary and ritual practices, with the Shipibo-Konibo people playing a significant historical and cultural role in its use. Originally confined to regions of Peru, Brazil, Colombia, and Ecuador, ayahuasca became widespread in Brazil, expanding widely by the mid-20th century through syncretic religions in Brazil. In the late 20th century, ayahuasca use expanded beyond South America to Europe, North America, and elsewhere, leading to legal cases, non-religious adaptations, and the development of ayahuasca analogues (i.e., variants) using local or synthetic ingredients. While DMT is internationally classified as a controlled substance, the plants containing it—including those used to make ayahuasca—are not regulated under international law, leading to varied national policies that range from permitting religious use to imposing bans or decriminalization. The United States patent office controversially granted, challenged, revoked, reinstated, and ultimately allowed to expire a patent on the ayahuasca vine, sparking disputes over intellectual property rights and the cultural and religious significance of traditional Indigenous knowledge. Ayahuasca produces intense psychological and spiritual experiences. Ayahuasca's psychoactive effects primarily result from DMT, rendered orally active by harmala alkaloids in B. caapi, which act as reversible inhibitors of monamine oxidase; B. caapi and its β-carbolines also exhibit independent contributions to ayahuasca's effects, acting on serotonin and benzodiazepine receptors. Higher doses of ayahuasca or harmala alkaloids may increase risks.
Ketamine is a cyclohexanone-derived dissociative general anesthetic and NMDA receptor antagonist with analgesic and hallucinogenic properties, used medically for anesthesia, depression, and pain management. Ketamine exists as its two enantiomers, S- (esketamine) and R- (arketamine), and has antidepressant action likely involving NMDA antagonism as well as other mechanisms. At anesthetic doses, ketamine induces a state of dissociative anesthesia, a trance-like state providing pain relief, sedation, and amnesia. Its distinguishing features as an anesthetic are preserved breathing and airway reflexes, stimulated heart function with increased blood pressure, and moderate bronchodilation. As an anesthetic, it is used especially in trauma, emergency, and pediatric cases. At lower, sub-anesthetic doses, it is used as a treatment for pain and treatment-resistant depression. Ketamine is legally used in medicine but is also tightly controlled, as it is used as a recreational drug for its hallucinogenic and dissociative effects. When used recreationally, it is found both in crystalline, powder and liquid form, and is often referred to by users as "Ket", "Special K" or simply "K". The long-term effects of repeated use are largely unknown and are an area of active investigation. Liver and urinary toxicity have been reported among regular users of high doses of ketamine for recreational purposes. Ketamine can cause dissociation and nausea, and other adverse effects, and is contraindicated in severe heart or liver disease, and uncontrolled psychosis. Ketamine's clinical and antidepressant effects can be influenced by co-administration of other drugs, though these interactions are variable and not yet fully understood. Ketamine was first synthesized in 1962; it was derived from phencyclidine in pursuit of a safer anesthetic with fewer hallucinogenic effects. It was approved for use in the United States in 1970. It has been regularly used in veterinary medicine and was extensively used for surgical anesthesia in the Vietnam War. It later gained prominence for its rapid antidepressant effects discovered in 2000, marking a major breakthrough in depression treatment. Racemic ketamine, especially at higher doses, may be more effective and longer-lasting than esketamine in reducing depression severity. It is on the World Health Organization's List of Essential Medicines. It is available as a generic medication.
Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.
MORE →Mae Jemison, aboard Space Shuttle Endeavour in 1992.