Dr S Chapeikin and Dr J Sher v Loretta Charmaine Mini

Ms Loretta Charmaine Mini, a 53-year-old legal secretary, exhibited stroke symptoms on 17 April 2007 at approximately 16h00. She consulted Dr Chapeikin that evening at 19h15, who diagnosed hypertension and anxiety, prescribing Prexum and Mitil. The next day (18 April 2007), at 12h15, she consulted Dr Sher, who diagnosed her as having suffered a mild stroke that had completed. Neither doctor referred her to hospital. Her condition deteriorated rapidly, and she was admitted to hospital on 20 April 2007 with complete right-sided hemiplegia (paralysis). Despite intensive rehabilitation for almost two months, she remained permanently disabled and unfit to continue her career. Ms Mini sued both doctors for damages totaling R922,638, claiming they negligently failed to diagnose her condition correctly and refer her to hospital for specialist treatment. The high court found both doctors negligent and liable as joint wrongdoers. The doctors appealed.

• Whether the general practitioners' failure to correctly diagnose a stroke in evolution and refer the patient to hospital constituted negligence
• Whether the standard of care expected of a general practitioner was breached in the circumstances of a rare and unusual 'stroke in evolution'
• Whether factual causation was established - would hospital referral have prevented or reduced the patient's sequelae
• Whether the separation of merits from quantum was appropriate given the inextricable links between liability and extent of damage
• The application of the 'but-for' test in medical malpractice cases involving omissions

The appeal was upheld with costs. The order of the high court was set aside and replaced with: "The plaintiff's claim is dismissed with costs."

The binding legal principles established are: (1) In medical malpractice cases, the standard for general practitioners is that of a reasonable general practitioner, assessed against the skill, care and diligence possessed and exercised by members of that branch of the profession at the relevant time; (2) A wrong diagnosis or error in treatment choice does not constitute negligence unless it is "palpably wrong" - i.e., one that a reasonably competent practitioner in the field would not have made; (3) Where a medical condition can only be diagnosed retrospectively with hindsight (such as a 'stroke in evolution'), a practitioner cannot be held negligent for failing to diagnose it at the time of presentation; (4) In delictual claims based on omissions, causation requires proof on a balance of probabilities that, but for the defendant's failure to act, the plaintiff's harm would not have ensued; (5) In medical negligence cases, it is insufficient to prove that the defendant failed to provide certain treatment - the plaintiff must also prove that such treatment would likely have prevented or reduced the harm suffered; (6) Provided a medical practitioner acts in accordance with a reasonable and respectable body of medical opinion, the practitioner cannot be found negligent merely because another equally reasonable body of medical opinion would have acted differently; (7) Separation of issues under Rule 33(4) should only be ordered after careful consideration, and is inappropriate where issues of liability and quantum are inextricably linked, particularly where causation depends on proof of the extent to which the outcome would have differed.

The Court made several non-binding observations: (1) It noted that strokes are the leading cause of disability and fourth most common cause of death in South Africa, with approximately 360 people per day suffering strokes; (2) It observed that the National Guidelines on Stroke and TIA Management, while representing a clinical protocol, must be applied with recognition that unusual presentations may not fit standard patterns; (3) The Court commented critically on the quality of the high court's fact-finding, noting it made findings inconsistent with expert evidence and failed to properly weigh contradictory testimony; (4) It noted that thrombolytic therapy, while the only effective acute stroke treatment, produces modest results even in ideal circumstances (only 7% absolute improvement in the 3-4.5 hour window based on ECASS 3 trial); (5) The Court observed that even if Ms Mini had been referred to hospital immediately, logistical factors (travel time, scanning, specialist availability) would likely have placed her outside the therapeutic window for thrombolytic therapy; (6) It commented that the separation of merits from quantum often leads to confusion and inefficiency, contrary to the purpose of Rule 33(4), and courts should ensure issues are circumscribed with clarity and precision before ordering separation; (7) The Court noted that the reliance on Lee v Minister of Correctional Services was misplaced, as that case did not replace the traditional but-for test but rather provided an alternative approach in specific circumstances involving omissions closely connected to a duty to prevent harm.

This case is significant for several reasons in South African medical malpractice law: (1) It clarifies the standard of care for general practitioners when confronted with unusual and atypical medical presentations that can only be diagnosed retrospectively; (2) It affirms that a misdiagnosis does not constitute negligence unless it is "palpably wrong" - i.e., one that a reasonably competent practitioner could not have made; (3) It reinforces that in medical negligence cases, expert evidence must establish not only what treatment should have been given, but that such treatment would likely have prevented the harm suffered; (4) It emphasizes the strict application of the 'but-for' test in causation, requiring plaintiffs to prove on a balance of probabilities that the outcome would have been different but for the alleged negligence; (5) It provides important guidance on when separation of merits from quantum under Rule 33(4) is inappropriate, particularly where causation and extent of harm are inextricably linked; (6) It demonstrates judicial deference to established medical protocols and guidelines regarding treatment of acute stroke patients, particularly the contraindication of aggressive blood pressure reduction; (7) It illustrates that courts cannot find negligence merely because one body of medical opinion would have acted differently, where the defendant acted in accordance with a reasonable and respectable body of medical opinion.