Bailey v The Ministry of Defence [2008] EWCA Civ 883 (29 July 2008)

The claimant suffered brain damage after aspirating vomit while hospitalised. The negligent failure to properly resuscitate her after a procedure contributed to her weakened state alongside non-negligent pancreatitis. The Court of Appeal held that where cumulative causes contribute to injury, a claimant need only prove the negligent cause made a material contribution, not that it was the sole cause.

Facts

The claimant, Grannia Bailey, was admitted to Royal Haslar Hospital on 9th January 2001 where she underwent an ERCP procedure on 11th January. Following the procedure, there was admitted negligence in her post-operative care, specifically a failure to properly resuscitate her overnight. She also developed pancreatitis, a recognised non-negligent complication. Her condition deteriorated significantly, requiring transfer to intensive care on 14th January and multiple emergency procedures between 15th and 19th January. On 26th January, having been transferred to a renal ward at St Mary’s Hospital Portsmouth, she aspirated her vomit causing cardiac arrest and hypoxic brain damage.

The Negligence

The Ministry of Defence admitted negligence in failing to properly resuscitate the claimant during approximately 20 hours on 11th/12th January 2001. The judge found that had she been properly resuscitated, a further intervention would have taken place on 12th January, avoiding the traumatic procedures she had to endure from 15th January onwards.

Issues

The central issue was causation. The claimant’s brain damage resulted from her inability to protect her airway when she vomited. Two factors contributed to her weakened state: the non-negligent pancreatitis and the negligent failure to provide proper care. The key questions were:

• Whether the negligence caused or materially contributed to the claimant’s weakened condition
• Whether the ‘but for’ test of causation applied, or whether proving a material contribution was sufficient
• Whether Wilsher v Essex Area Health Authority precluded recovery where there were multiple possible causes

Judgment

The Court of Appeal dismissed the appeal. Lord Justice Waller delivered the leading judgment, with Lord Justice Sedley and Lady Justice Smith agreeing.

Ground One: Earlier Intervention

The court upheld the trial judge’s finding that, had the claimant been properly resuscitated, she would have undergone a further procedure on 12th January, saving her from the traumatic period from 15th January onwards.

Ground Two: Causal Link

The court accepted the trial judge’s ‘common sense assumption’ that the claimant’s generally weakened and debilitated condition caused her inability to respond naturally to her vomit. While rejecting the specific catabolism mechanism proposed by Dr Ryan, the judge was entitled to find that weakness caused the aspiration.

Ground Three: The Legal Test

Lord Justice Waller summarised the position on cumulative cause cases:

If the evidence demonstrates on a balance of probabilities that the injury would have occurred as a result of the non-tortious cause or causes in any event, the claimant will have failed to establish that the tortious cause contributed. Hotson exemplifies such a situation. If the evidence demonstrates that ‘but for’ the contribution of the tortious cause the injury would probably not have occurred, the claimant will (obviously) have discharged the burden. In a case where medical science cannot establish the probability that ‘but for’ an act of negligence the injury would not have happened but can establish that the contribution of the negligent cause was more than negligible, the ‘but for’ test is modified, and the claimant will succeed.

The court distinguished Wilsher, which involved different distinct causes operating in different ways, from the present case involving cumulative causes acting together to create weakness.

Implications

This case is significant for medical negligence claims involving multiple contributing causes. It confirms that:

• In cumulative cause cases, the strict ‘but for’ test is modified
• A claimant succeeds by proving the negligent cause made a material contribution (more than negligible) to the injury
• The Wardlaw principle applies in medical negligence cases as in industrial disease cases
• Wilsher is confined to cases involving distinct causes operating differently, not cumulative causes

The decision provides important guidance on the application of causation principles where medical science cannot precisely determine the relative contributions of negligent and non-negligent factors to a patient’s injury.

Verdict: Appeal dismissed. The Ministry of Defence was held liable. The trial judge correctly applied the material contribution test and was entitled to find that the negligence materially contributed to the claimant’s weakened condition which caused her to aspirate.

Source: Bailey v The Ministry of Defence [2008] EWCA Civ 883 (29 July 2008)