Wilsher v Essex Area Health Authority
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''Wilsher v Essex Area Health Authority'' 988AC 1074 is an
English tort law English tort law concerns the compensation for harm to people's rights to health and safety, a clean environment, property, their economic interests, or their reputations. A "tort" is a wrong in civil, rather than criminal law, that usually requ ...
case concerning the "material increase of risk" test for causation.


Facts

The defendant hospital, initially acting through an inexperienced junior doctor, negligently administered excessive oxygen during the post-natal care of a premature child who subsequently became blind. Excessive oxygen was, according to the medical evidence, one of five possible factors that could have led to blindness. On the "balance of probabilities" test, the hospital would not be liable, since it was more likely that one of the alternate risks had caused the injury. The Court of Appeal applied the "material increase of risk" test, first espoused in '' McGhee v National Coal Board''. The Court found that since the hospital breached its duty and thus increased the risk of harm, and that the plaintiff's injury fell within the ambit of that risk, the hospital was liable despite the fact the plaintiff had not proved the hospital's negligence had caused his injury.


Judgment

The House of Lords found that it was impossible to say that the defendant's negligence had caused, or materially contributed, to the injury and the claim was dismissed. It also stated that ''McGhee'' articulated no new rule of law, but was rather based upon a robust inference of fact (this understanding of ''McGhee'' was rejected in ''
Fairchild v Glenhaven Funeral Services Ltd ''Fairchild v Glenhaven Funeral Services Ltd'' 002UKHL 22is a leading case on causation in English tort law. It concerned malignant"> malignant mesothelioma, a deadly disease caused by breathing asbestos fibres. The House of Lords approved the t ...
''). In a minority view, Mustill LJ. argued that if it is established that conduct of a certain kind materially adds to the risk of injury, if the defendant engages in such conduct in breach of a common law duty, and if the injury is the kind to which the conduct related, then the defendant is taken to have caused the injury even though the existence and extent of the contribution made by the breach cannot be ascertained.


See also

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Negligence Negligence (Lat. ''negligentia'') is a failure to exercise appropriate and/or ethical ruled care expected to be exercised amongst specified circumstances. The area of tort law known as ''negligence'' involves harm caused by failing to act as a ...
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Causation in English law Causation in English law concerns the legal tests of remoteness, causation and foreseeability in the tort of negligence. It is also relevant for English criminal law and English contract law. In the English law of negligence, causation proves a ...
English tort case law English causation case law House of Lords cases 1988 in case law 1988 in British law 1980s in Essex {{UK-law-stub