Wednesday, June 29, 2005

The paradox of no liability in clinical negligence for missing the diagnosis of disease with poor outcome ~ Gregg v Scott

The fact
  • Mr. Gregg was misdiagnosed by Dr. Scott to have lipoma at the axilla in November 1994.
  • He was in fact suffering from non-Hodgkin’s lymphoma, which was only found out by another doctor in August 1995, nine month after his first consultation with Dr. Scott.
  • Expert opinion pointed out that his chance of recovery, as defined by ten year survival, had been decreased from 42% to 27%.
  • His claim for damage for “lost of chance” was rejected by the court of first instance and then by the Court of Appeal. The House of Lords, by a narrow majority of 3 to 2, also disallowed the appeal on January 27, 2005.

The law
  • In the law of tort, negligence is established if actionable damage, which is not too remote, is caused by a breach in the duty of care owed by the defendant to the claimant. 
  • It is the claimant to prove all the four components, among which causation is the most difficult part as in clinical negligence.
  • The “but for” test is used in proving causation. The case is established if “but for” the defendant’s breach of his duty owed, the claimant would not suffer the actionable damage. It came to a point when the unfavorable outcome would “probably” happen anyway, as in this case that Mr. Gregg had a 58% chance of dying of the disease in ten years, there was by no means that the claimant could pass the “but for” test if the damage he was claiming was about the unfavorable outcome. This was because even without the defendant’s negligent act, there was a more than even chance that the damage would be there.
  • Compensation (damage) comes in an all-or-nothing manner. In Hotson v East Berkshire Area Health Authority , a 13 year old boy fell from a tree and sustained a traumatic fracture of the left femoral epiphysis. The doctor missed the diagnosis and delayed treatment for five days. He then suffered avascular necrosis of the epiphysis with consequential serious disability. Expert opinion suggested that the fate of avascular necrosis was determined at the time of injury and gave a figure of 25% chance of full recovery if diagnosed and treated promptly. The trial judge awarded a sum which reflected 25% of the total damage to the claimant, and this was affirmed by the Court of Appeal. However, the House of Lords reversed this decision and found that the claimant failed to prove his case on the balance of probability. He failed the “but for” test as even without the miss in diagnosis, he was more likely to develop avascular necrosis than not.
  • This time, Mr. Gregg put his case in terms of lost of chance of recovery as from 42% to 27%, which was a substantial reduction. This again failed.


The implication

  • Negligent act “causing” a reduction of chance of survival from 49% to 0% would fail the “but for” test, while negligent act reducing the claimant’s chance of survival from 51% to 49% could satisfy the test for causation.
  • The view that the “but for” test for causation should be loosen in order to do justice as expressed in the judgement of the recent controversial case Chester v Afhsar was not shared by the law lords in this case.
  • As long as the prognosis of the disease bears a less than even chance of recovery (such as many malignancies, extensive cardiovascular and cerebral vascular accidents), it would be paradoxically more diffucult to establish liability for a miss diagnosis with a more serious disease.

My observations
  • Judges and law lords needed some tutorials in statistic. 
  • I wonder why there wasn’t much discussion about the confident intervals of the risks and chances quoted, as these confident intervals were expected to be wide.
  • The cohort quoted for risk estimation in Gregg composed of around 100 patients with different ages and sexes. Whether these figures were applicable to Mr. Gregg as an individual would be highly questionable.
  • The most fallable concept was given in the judgement of Chester v Afhsar (the “informed consent” case with a neurosurgeon) by two law lords. The claimant frankly admitted that she would probably have the surgery on another day (and not refused to have the surgery altogether) if the surgeon had told her that there was a less than 1% chance of injury to the spine and caused paralysis. It was given in the judgement that “but for the surgeon’s negligent failure to warn the claimant of the small risk of serious injury, the actual injury would not have occurred … and the chance of it occurring on a subsequent occasion was very small.” That was comparing a rare event that had actually happened (a certainty) with the probability of that event happening again!
  • Legal reasoning is difficult to understand, unless you have the concept of “policy consideration” in you mind. And “policy consideration” means framing argument according to preset outcome.

Sunday, June 12, 2005

Case Review: North Glamorgan NHS v Walters [2003] Lloyd’s Rep. Med 49

The set of rules developed for policy reasons to limit the claims for psychiatric injury to secondary victims (the Alcock criteria) in the Hillsborough tragedy was hard to justify in terms of logic and morality . Lord Steyn in Frost v Chief Constable of South Yorkshire Poice described it as “a patchwork quilt of distinctions which are difficult to justify.” The Law Commision expressed the view in its report that the common law had in some respects “taken a wrong turn” . Here was another case concerning the interpretation of “sudden appreciation of a horrifying event” criterion of Alcock. It showed mallowing of the Alcock criteria by the court, but this also added more uncertainty to cases concerning psychiatric injury.

The material facts
This was an appeal by North Glamorgan NHS against the decision by Thomas J to hold Ms Walters entilted to damages for the pathological grief reaction resulting from negligent medical treatment of her ten month old son, Elliot. Elliot was admitted to the Prince Charles Hospital because of jaundice. He turned out to be suffering from acute hepatitis, which resulted in fulminant hepatic failure. One morning, Ms Walters woke up and found Elliot in convulsion. She was wrongly reassured about his condition, and only be told of the truth when Elliot was transferred to King’s College Hospital that he sufferred severe brain damage. Finally, Ms Walters had to come to a decision of turning off the life support machine and Elliot died in her arm, 36 hours after his convulsion.

The appellant’s case was as follows:
1. The 36 hour period could not be held in law to be one horrifying event
2. The claimant’s appreciation of the 36 hour period was not sudden but a more gradual assault of the mind over a period of time.
3. An incremental step had been taken advancing the frontiers of liability
4. They are to be constrained by policy condiserations to allow this appeal.

The court’s decision
1. The law permitted a realistic view being taken from case to case of what constituted the necessary "event". In this case there was a seamless tale with an obvious beginning and an equally obvious end. It was played out over 36 hours but was undoubtedly one drawn-out experience, and was horrifying.
2. The claimant’s appreciation was sudden in contradistinction to an accumulation of gradual assaults on her mind. The necessary proximity in space and time was satisfied.
3. The judge had not taken an incremental step advancing the frontiers of liability.
4. As no incremental step was involved and as the appeal was essentially against the judge's findings of fact, considerations of public policy did not apply.

Legal principles
For psychiatric injury resulting from negligence, the court had traditionally adopted a more restrictive approach. The claimant still needed to prove the breaching of a duty of care owed by the defendant towards him, causing actionable damage which was not too remote. There were in addition several “hurdles” set for the claimant before he could succeed in his case.The first hurdle was to satisfy that he had sustained a recognised psychiatric illness. The second point would be to classify whether he belonged to the group of primary or secondary victim. A claimant who did not come within the group of primary victim would be classed as a secondary victim and would be owed a duty of care only if he satisfied the policy hurdles set in Alcock as follows:

1. that psychiatric harm to a claimant of reasonable fortitude was reasonably foreseeable;
2. a close tie of love and a!ection between the claimant and a primary victim;
3. that the claimant was proximate in time and space to the incident or the immediate aftermath;
4. that the harm was triggered by the sudden appreciation of a horrifying event; and
5. that they perceived the event through their own unaided senses.

Application of principles
In this case, there was no dispute that:
Ms Walter suffered a recognised psychiatric illness (pathological grief reaction).
She was a secondary victim, and so she was subjected to the Alcock criteria.
The psychiatric illness that she suffered was reasonably foreseeable.
She had the necessary close relationship with the victim (mother and son).
She was proximate in time and space to the incident (she witnessed the fit and her son died in her arms)
She perceived the event through her own unaided senses (she witnessed the fit and her son died in her arms)

The main issue in dispute was the shock requirement for causation, whether Ms Walters’ psychiatric harm was due to “the sudden appreciation by sight or sound of a horrifying event”.

By referring to McLoughlin , Ward LJ analysed “the event” as “the fact and consequence of the defendant’s negligence…”. And that “event can constitute more than a single moment in time” . He also quoted Lord Ackner in Alcock that ““Shock”, in the context of this cause of action, involves the sudden appreciation by sight or sound of a horrifying event, which violently agitates the mind. It has yet to include psychiatric illness caused by the accumulation over a period of time of more gradual assaults on the nervous system.”

Ward LJ also quoted Judge White in Tredget & Tredget v Bexley Health Authority in support of his analysis: “It is unrealistic to separate out and isolate the delivery as an event, from the other sequence of happening from the onsset of labour to Callum’s death two days later, as a whole. Although lasting for over forty-eight hours from the onset of labour to the death, this effectively was one event.”

Cases distinguished
This case was distinguished from Sion v Hampstead HA . In Sion, a father had looked after his son in an ICU for fourteen days before his death resulting from the negligent management of the hospital for a traffic accident. The father sufferred psychiatric injury but failed to claim damage as a secondary victim because of failing of the sudden shock criterion . The medical evidence showed that there was no sudden and unexpected shock to the father’s nervous system..

Taylorson v Shieldness Products Ltd was also distinguished. In this case the parents failed their claim for psychiatric damage after staying with their injured son in the ICU for 48 hours. The court held that it failed the shocking criterion because the mother had a dawning consciousness that they were going to lose their son. The court thus declined to extend the notion of proximity to this “elongated process”.

Impact of the case
There was an unanimous decision that a 36 hour period could be considered one horrifying event. There were cases in line with the decision in Walters.

In Froggatt v Chesterfield & North Derbyshire Royal Hospital NHSTrust , the hasband and son of Mrs Froggatt were awarded damages for their psychiatric injury because of a masectomy negligently done for Mrs Froggatt, in mistake that there was a malignant condition of her breast. The judge found that both the claimants did suffer a direct horrifying event and thus fully fulfilled the Alcock criteria.The horrifying event for Mr. Froggatt occurred “when he saw her undressed for the first time after the mastectomy. He was quite unprepared for what he saw and he was profoundly and lastingly shocked by it.” For the son, Dane, “the sudden appreciation came as a result of overhearing his mother’s telephone conversaton and his immediate belief,….,that she had cancer and was likely to die. He was completely unprepared for such a shock”

In Atkinson v Seghal , the judges decided that an aftermath could be made up of several components. In that case, the immediate aftermath extended from the moment of the accident until the moment that the appellant left the mortuary. The claimant heard of her daughter’s death from a traffic accident from a police cordon. She later saw the body of her daughter as confirmed by her husband at the morturay. Latham LJ decided that the claimant was proximate in time and space to the incident or the immediate aftermath

However, apart from Sion and Taylorson mentioned, there were cases not in line with the decision in the present case.
In Tan v East London and City HA , the claimant failed to claim psychiatric damage as secondary victim after being told over the phone of his son’s death in utero due to mismanagement, and travelled to witness the stillbirth of his child three and a half hours later. It was decided that the stillbirth was inevitable after a death in utero and it was thus the death itself which constitiuted the traumatic event. The phone call did not qualify as direct perception of the traumatic event.

In a recent case, Julia Ward v Leeds Teaching Hospitals NHS Trust , Walters was distinguished and the claimant failed in respect of causation. The claimant claimed damages for his post-tramatic stress disorder because of viewing his daughter’s death in hospital 48 hours after dental surgery. It was decided that the diagnostic criteria for a finding of post traumatic stress disorder required a shocking event of a particularly horrific nature. The death of a loved one in hospital did not meet that description unless also accompanied by circumstances that were wholly exceptional in some way so as to shock or horrify. Such shock was not identified: “Although the Claimant's case places great reliance upon the decision of the Court of Appeal in Walters v. South Glamorgan NHS Trust, that case proceeded upon an agreed basis of causation, namely that the claimant had suffered a pathological grief reaction as a result of witnessing, experiencing and participating in the events at the hospital and that without those events the pathological grief reaction would not have occurred. Psychiatric evidence was clear therefore that the Claimant's illness had been caused by shock. On my findings, despite every feeling of sympathy for the Claimant's loss, such a basis for liability does not exist.”

Comments
These cases involving the Alcock criterion of “the sudden appreciation by sight or sound of a horrifying event” were difficult to reconcile. The finding of the shocking events were artificial and arbitury. This case together with Froggatt and Atkinson, had been suggested to show mellowing of the application of Alcock criteria in medical cases. Although Ward LJ had specifically stated that “no incremental step had been taken advancing the frontiers of liability”, he would “unrepentantly prefer to do justice than to achieve fiscal expediency” . Clarke LJ in his judgement, said that the Alcock mechanisms should not be applied too rigidly or mechanistically. In the circumstances of this case, if he needed to, he would take that incremental step advancing the frontiers of liability.

However, cases liked Sion, Taylorson and Tan were still referred to and relied upon. Case like Julia Ward reflected the difficulties in the application of the Alcock mechanism. Certainty was sacrified in doing justice by the judges.

Reforms
It had been proposed in the Law Commission Report that in relation to secondary victims, all of the Alcock control mechanism should be abolished except that of “close ties of love and affection” criterion. This criterion together with the requirement for proof of known psychiatric illness, could control the floodgate of litigation. There is no need to show that the claimant was proximate in time and space to the incident or the immediate aftermath; or that the harm be triggered by the sudden appreciation of a horrifying event; or that they perceived the event through their own unaided senses.
Conclusion
This was a case in which the judge circumvented the “sudden appreciation by sight or sound of a horrifying event” criterion in Alcock by adjudcating that an event could be made up of several events in a span of 36 hours. Although justice was done, it introduced more uncertainty in the case law for secondary victims in psychiatric shock. Reform in the direction of the proposal by the Law Commission would be welcome.

Biblography

Books
Tort, Paula Giliker & Silas Beckwith, Sweet & Maxwell Textbook Series, 2001.
Textbook on Torts, Michael A Jones, Oxford University Press, 8th Edition

Articles
1. A Remedy for Nervous Shock or Psychiatric Harm – Who Pays? Nicholas N Chin; Murdoch University School of Law; Torts Australia (Other articles), Volume 9, Number 4 (December 2002)
2. Case Comment: Ceri Ann Walters v North Glamorgan NHS Trust (2002), Rosalind English One Crown Office Row,14/3/2002
3. Damages for Nervous Shock Following Medical Negligence; Howard Watson; 2003, http://www.lawinabox.net/
4. Deaths in hospital and psychiatric injury, Nigel Spencer Ley, personal injury and clinical negligence specialist, of Farrar’s Building, 27/9/2004
5. Discussion Paper on Damages for Psychiatric Injury; Scottish Law Commision, Discussion Paper No 120
6. Discussion Paper on Liability for Negligently Inflicted Psychiatric Illness, Assoc Professor Tan Keng Feng, National University of Singapore, Prepared for the Law Reform Committee, Singapore Academy of Law, 22 August, 2000
7. Liability for Psychiatric Illness, The Law Commision Report 249
8. Report on Damages for Psychiatric Injury; SCOT LAW COM No 196, SE/2004/129
9. Secondary Iatrogenic Harm: Claims for Psychiatric Damage Following a Death Caused by Medical Error; Paula Case, Institute of Medicine, Law& Bioethics,University of Liverpool; Medico-Legal Issues Arising Out of Death, a conference of the Association for Victims of Medical Accidents (London, 20May 2003).

Cases
1. Alcock v Chief Constable of South Yorkshire Police; sub nom. Jones v Wright [1992] 1 AC 310; [1991] 3 WLR 1057, HL
2. Atkinson v Seghal 2003 WL 21047373
3. Froggatt v Chesterfield & North Derbyshire Royal Hospital NHSTrust [2002] All ER (D) 218 (Dec)
4. Frost v Chief Constable of South Yorkshire Poice [1999] 2 AC 455
5. Julia Ward v Leeds Teaching Hospitals NHS Trust [2004] Lloyd's Rep Med 530
6. McLoughlin v O’ Brian [1982] 2 All ER 298, per Lord Bridge
7. Page v Smith [1995] 2 All ER 736
8. Sion v Hampstead HA [1994] 5 Med LR 170
9. Tan v East London and City HA [1999] Lloyd’s Rep Med 389
10. Taylorson v Shieldness Products Ltd [1994] PIQR 329
11. Tredget & Tredget v Bexley Health Authority [1994] 5 Med LR 178

Friday, June 10, 2005

Safe Dispensing
A system of safe dispensing is very important. The doctor should be in charge of the system and be able to supervise all clinic staff to adhere to the system. The system should be updated regularly and the importance of adherence be monitered and stressed regularly. The following serves to provide some general guidance and each user should review his own system according to individual setting with his staff.


Checking

  • Number of types of medication
  • type (make sure all parties can recognise each medication. If in doubt, open a new bottle for confirmation, or contact the drug company.)
  • dosage (how many tabs each time? How much syrup each time?)
  • frequency of dosing
  • number of tablets/volume of syrup in each pack
  • name of patient
  • drug allergy
  • checked by the one who prepared the medications, then by the doctor, and then by the one who give the medications to the patient

Medication

  • check medication by doctor after receiving from drug company
  • supervise and check by another person when changing from large container to smaller container
  • write the name of the medication clearly on all containers
  • make sure that the labels/lids/covers of the containers will not be mixed up, and check this regularly
  • do not give fancy names or similar names to medication
  • make sure assistants know both the generic and brand name of each medication, and provide a list where they can confirm
  • do not order medications which look too similar
  • use more individually packed medications
  • before pre-packing, have another person to check the medication from the large container, make sure that each pack is clearly and correctly labelled. Containers of pre-packed medications should be labelled clearly.
  • Do not put medications which look similar together
  • Shelf long term medications (especially dangerous ones: DM, HT, psychotrophic, NSAID) separate with short term medications
  • Attach tags to containers of medications which are used in daily or BD dosage instead of more frequent dosing

Doctor
  • Leader of the team, must understand the importance of risk management and be able to carry out routine strictly
  • Stress the importance of adhering to the system regularly to staff
  • Write clearly, do not use abbreviatons difficult to understand or easily confused
  • Give enough time for assistants to carry out the checking
  • Check system regularly: stock, containers, labels, lids, pre-packed medications….


Clinic assistants

  • Understand the importance of adhering strictly to the system
  • Give feedback to doctor if encounter occasion where there is a chance of mixing up
  • Ask and check if in doubt, and be encouraged to do so
  • Report immediately if anything go wrong

The system
  • Review according to individual setting with own staff
  • Update regularly
  • Reiterate the importance regularly
  • Peer review

Wednesday, June 01, 2005

北京行記

  • 五月十五日,一行三十人,包括醫生及牙醫,應中聯辦邀請,以獨立人士身份,參加三天「香港醫學界人士北京訪問團」。
  • 交流內容、跟進項目等大道理自有會長及主編等跟進。我且記錄此行流水賬和一些花絮。
  • 此行三十人包括立法會議員和十五個專業團體:香港醫學會、牙醫學會、公共醫療醫生協會、醫療論壇、公共顧問醫生協會、牙醫管理委員會、執照醫生協會、西醫工會、政府醫生協會、兒科醫學院基金、公共屋村執業西醫協會、專科醫生學會、香港中華醫學會、公立醫院衛生署及大學醫生協會、前線醫生聯盟。
  • 行程十分緊密,其實就只有「拜訪」和「宴請」兩項。此行亦由中聯辦五月十一日於中聯辦三十八樓宴會廳宴請作序幕。會中推舉蔡堅為此行團長,陳建強及黃德祥為副團長,郭家麒及阮中鎏為顧問。
  • 「拜訪」部門包括:國務院港澳辦、衛生部、中華醫學會、中央統戰部、北京大學第三醫院、北京大學醫學部、中國疾病預防控制中心及國家愛滋病防治中心。
  • 因了解自己的普通話早已註冊為「有限公司」,所以急召老婆的普通話老師惡補三課。最後問及「臨急抱佛腳」普通話怎麼說,得到的教導是一句京話:「上陣磨鎗,不快也亮。」
  • 到達北京,剛下飛機,發覺鼻子一酸,眼睛一熱。正奇怪自己怎麼這麼眼淺,還未看到國旗昇起,先便流起淚來。不過隨之而來的咳嗽,使我知道這是敏感反應。原來北京五月已很熱,到處都飄着木棉花的種子。
  • 「宴請」時發現我們比國內更「大陸」,不停的敬酒,忙過不亦樂乎,倒也熱鬧。
  • 早上六時半「叫醒」,晚飯後並沒有安排節目。不知道有沒有團友外出見識北京的酒吧文化,留下一些難忘的回憶?
  • 雖云走馬看花,大部份題目都未能深入討論,但此行獲益良多。其中一項是能夠對國內官員和學者近距離觀察,領略他們的談吐、學養和風采。
  • 最後一點,是我發現原來自己的普通話也不是太差……