8 The appellant, Dr David Freidin, who is an obstetrician and gynaecologist, appeals against the judgment for $32,000 entered in the Supreme Court in favour of the respondent, Marija St Laurent, in accordance with the jury's verdict given on 8 December 2005. After a trial that lasted six sitting days the jury found the appellant negligent in respect of personal injuries sustained by the respondent in the course of giving birth, and awarded her damages in the sum of $30,000. Damages in the nature of interest were agreed between the parties at $2,000. The appellant contends, essentially, that the learned judge erred in his directions to the jury on the issue of causation and that, in any event, no reasonable jury, properly instructed, could have reached the conclusion that the appellant was negligent or that his negligence caused the injury in question. He seeks an order that the judgment entered against him be set aside and consequential orders.
9 Before considering the issues raised on appeal it is necessary to set out briefly the relevant background circumstances. In the proceeding,[5] the respondent claimed damages in respect of an injury that she sustained in the course of giving birth to her child and subsequent recovery. The injury was described as a large right sided vulval haematoma, requiring evacuation of approximately 15 per cent of the respondent's total blood supply. It was said to have been caused by a shearing effect between the vaginal wall and paravaginal tissue that occurred during the delivery process. It was the respondent's case that the appellant was negligent in using Kielland forceps to deliver the baby on the evening of 24 December 1999 without performing an episiotomy and that this was a cause of her injury. In the event, the only issues at trial were whether the appellant was negligent in not performing an episiotomy and, if he was, whether the negligent omission was a cause of the respondent's injury.
10 The uncontentious facts were that the appellant was first consulted by the respondent, who was then aged 24 years, in August 1999. He continued to manage her throughout the course of her pregnancy which, it seems, progressed satisfactorily. On 23 December 1999, at approximately 7pm, the respondent went into labour and was admitted to hospital. The appellant examined her at 7.45am on the following morning and again at about 1.35pm on that day. The appellant gave evidence that he found that the position of the baby's head was right occipito-transverse, which meant that it had spontaneously rotated 45 degrees since the morning examination. This was said to be a promising sign indicating that, with continuing contractions, the head would continue to rotate to the anterior position. The baby's head continued to descend throughout that afternoon as the respondent was undergoing contractions. It was noted by the midwife that the head was palpable post anally, something that generally indicated, according to the appellant, that the head was low down in the pelvis. Shortly after 6pm, the midwife advised the appellant that the respondent had been pushing and that the baby's head had descended but that, in response to the respondent's contractions, there were decelerations in the foetal heart.
11 The appellant arrived to deliver the baby at approximately 6.35pm. He said that he found the baby's head well down in the lower part of the vagina but, upon examination, saw that that baby's head was not occipito-transverse as expected but in a posterior position. An attempt to rotate and deliver the baby by vacuum extraction was not successful. In the result, the appellant determined to rotate and deliver the baby using Keilland forceps. He said that he applied the forceps laterally on either side of the baby's head, dropped the blades of the handle down and rotated the blades. In the event, the baby was delivered in a healthy state. The appellant explained that, in the course of delivering the baby, he guarded the perineum with his right hand and, as the head came out of the vagina, he swept back the perineum over the baby's face and chin to release the head. He said that there was no need to perform an episiotomy because "the perineum was stretching and the vagina was stretching nicely". After the delivery the appellant sutured two superficial tears in the left and right wall of the respondent's vagina. He said that he presumed the cause of the tears to have been the passage of the baby's head through the introitus, although in cross-examination he agreed that it was possible that the tears may have been caused by the forceps as the baby's head was coming through or under the perineum. He was not able to say either way whether they could have been prevented had he performed an episiotomy. The appellant completed the sutures shortly after 7.00pm. Not long thereafter, however, the respondent commenced to feel pain on the right side of her vagina and her husband noted some swelling in that area. At about 8.20pm the midwife observed a large right labial haematoma. In the result, the appellant examined the respondent at 10.35pm. He observed a large right sided vulval haematoma that contained approximately 800mls of blood that had spread diffusely. The appellant evacuated the blood clot and sutured the defect which he estimated to be at least 10cm in length. Although the origin of the bleeding could not be identified precisely by the witnesses, it was apparent that it was from deep tissue "inside" and not from either of the two vaginal lacerations.
12 As I have said, at the trial, the respondent contended that the appellant was negligent in failing to perform an episiotomy during the course of the delivery and that this negligence was a cause of her injuries. The appellant, on the other hand, claimed that, in the circumstances, it was not negligent for him not to have performed an episiotomy and that, in any event, the respondent had failed to show that the omission was a cause of her injuries.
13 Both sides called expert evidence at the trial. The respondent called Dr John Richard Pogmore, an obstetrician and gynaecologist with considerable experience both in Australia and England. The respondent also called Professor Norman Albert Beischer AO, an experienced obstetrician and gynaecologist, who held a number of appointments at hospitals and had contributed extensively to the medical literature in this area, including having co-authored a widely used text book in the field of obstetrics in Australia.[6] The appellant, who gave evidence, called as independent experts Professors John Michael Holroyd Permezel and Alexander John Campbell, who are obstetricians and gynaecologists, and who have had extensive experience in this field. Unsurprisingly, none of the experts' qualifications was challenged during the trial.
14 The proceeding was heard, as I have said, over a period of six sitting days and, on the seventh day, 8 December 2005, the jury returned the verdict that I have summarised earlier. The appeal is limited to the claims that his Honour erred in directing the jury on the issue of causation and that the findings of negligence and causation were not open. There is no challenge to the quantum of the damages assessed by the jury. I now turn to consider each set of grounds on which the appellant relies.
Misdirection on causation - grounds 1 and 2
15 Before his Honour charged the jury on the issue of causation, he told counsel that he proposed to do so in accordance with what was said in that regard by Gaudron J,[7] in Naxakis v Western General Hospital[8], namely: