Vehicle Cause of Stroke

February 24, 2009, Kitchener, Ontario

Posted by: Robert Deutschmann, Personal Injury Lawyer

Before: Arbitrator Denise Ashby
Decision Date: January 30, 2009

D.M. sustained impairments on November 20, 2004. He applied for and was denied statutory accident benefits from Dominion of Canada. The preliminary issue of the hearing was to determine if Mr. M.'s impairments were sustained as a result of an "accident" as defined in subsection 2(1) of the Schedule.

In the early hours of November 20, 2004, a neighbour found Mr. M. sitting on the street. He was straddling his truck's front tire on the passenger's side. At the time, the neighbour was investigating the damage caused by Mr. M.'s truck hitting his family's two vehicles.

Subsequent to being found, Mr. M. was transported to hospital where he was diagnosed with a large intraparenchymal bleed. A de-compressive craniotomy, to remove a blood clot in the left temporoparietal area of Mr. M.'s brain, was performed within hours of the incidents.

The parties disputed the cause of the intraparenchymal bleed (stroke.) Mr. M.'s Estate submitted that the impact of his truck striking the vehicles caused the stroke. In the alternative, Mr. M. had a transitory spike in blood pressure resulting in the stroke. Mr. M.'s Estate submitted the spike in blood pressure was caused by a panic reaction to being involved in a motor vehicle accident while having a blood alcohol level over the legal limit. As he was a professional truck driver and the main financial support for his family, a loss of his driver's license would have serious consequences.

Dominion submitted that Mr. M. suffered a spontaneous intracerebral haemorrhage (ICH) or stroke prior to the first incident. As a consequence, he struck the three vehicles. Dominion disputed that Mr. M.'s ability to drive was impaired at the time of the incidents.

Mr. M.'s wife, son, P.M., and stepson, D.P., each testified on behalf of Mr. M. As well, four neighbours testified. The arbitrator found all of the lay witnesses to be credible and each gave their evidence in an honest and forthright manner. The arbitrator accepted their evidence as facts unless otherwise specified. One of the investigating police officers and the two paramedics who transported Mr. M. to hospital by ambulance also testified.

For Mr. M.'s Estate to be successful in this case, they had to establish on a balance of probabilities that Mr. M.'s stroke and his resulting impairments were "directly caused by the use or operation" of his truck pursuant to subsection 2(1) of the Schedule.

On the afternoon of November 19, 2004, Ms. M. left for an over-night shopping trip. Following her departure, Mr. M. took his son to get a haircut. They had dinner with Mr. M.'s stepdaughter who subsequently left for the evening. Following dinner, Mr. M. and his son went to visit neighbours. P.M. testified that he thought his dad consumed 2 bottles of beer and 2 glasses of an orange drink while they were visiting. At about 10:30 p.m. they returned home. Mr. M. put his son to bed and went downstairs. He returned to his son's bedroom shortly after to retrieve his cigarettes. The son testified that his father's speech was normal, he had no trouble walking and he had no injuries to his face when he said good night.

On November 20, 2004, at approximately 4:30 a.m., a neighbour heard a bang. She went to her living room window and observed Mr. M.'s truck backing up after hitting a parked car. The truck then left the scene. She observed it weaving slowly down the street. The father, of the owner of that car, testified that the damage to the bumper was slight and was never repaired. He estimated the time between 4:30 a.m. and 5 a.m. The neighbour, who found Mr. M., testified his family's two vehicles were hit by Mr. M.'s truck. The second vehicle struck was his daughter's car. The third vehicle was his van. Both the car and the van required repairs.

The first paramedic to testify documented the call. They arrived at the scene at 5:23 a.m. and at the hospital at 5:58 a.m. On his initial examination of Mr. M., he noted the faint smell of alcohol. He found a bruise on the right side of Mr. M.'s skull and marked weakness on his right side. He took three blood pressure (b.p.) readings prior to transferring care to the hospital staff. At 5:36 a.m. Mr. M. had a b.p. of 150/80. At 5:41, his b.p. was 150/82 and at 5:55 a.m. he registered Mr. M.'s diastolic pressure as 142.

Ms. M. testified that her husband could not recall the events of the night prior to the incidents or of the incidents themselves. The neighbours, who were at the scene, the police officer who investigated and the ambulance attendants who took him to hospital, testified that Mr. M. did not speak. His only utterances were groans.

Ms. M. returned from her shopping trip the morning of November 20, 2004. Both she and Mr. M.'s stepson D.P examined the interior of his truck. Ms. M. examined it the evening of November 20 and D.P. on the morning of November 22, 2004. They testified that the truck's floor mats were soaked with coffee. They saw a Tim Hortons coffee cup on the floor. Both testified that Mr. M. loved Tim Hortons coffee. Ms. M. testified her husband routinely purchased coffee at the Tim Hortons outlet close by his workplace prior to starting work. On weekends, he would regularly go to the Tim Hortons outlet closest to their home. Mr. M. would usually use the drive-through window for his purchases. She described the outlet near their home as an obstacle course to drive. Ms. M. took pictures of the drive-through and made timed trips from the outlet to the site of the first impact. She testified that the drive from the Tim Hortons outlet to the incident scene took 1.5 minutes. There were two ways to approach the scene from the outlet and both took the same amount of time to drive. Ms. M. conducted these tests at 6 p.m. in the evening.

Although there was no direct evidence that Mr. M. was driving his truck at the time of the incidents, the parties accepted that he was. As well, it was accepted that Mr. M. was travelling northbound on a street when he collided with the first car. He then turned a corner and proceeded eastbound where his truck collided with the other car and the van. Mr. M. stopped his truck in front of his home. The arbitrator accepted the foregoing as fact and found that Mr. M. was driving his truck when it struck the three vehicles. I was also found that Mr. M. was returning from the Tim Hortons outlet where he customarily bought his weekend coffee when the incidents occurred. The arbitrator was satisfied that, having left his son alone, Mr. M. used the drive-through to make his purchase to save time. It was also accept that the outlet's drive through was narrow and required a sharp turn.

Dr. H., neurosurgeon, testified that Mr. M.'s stroke was caused by either a coupe contra coupe injury sustained in the first impact or a transient rise in blood pressure. He reasoned that a truck driver, whose employment was dependant on being able to drive, would have a spike in blood pressure when involved in an accident. It was more likely to occur if the person had been drinking. Dr. H. did not agree with Dr. Mo.'s opinion that the lack of a subdural or subarachnoid hemorrhage ruled out the possibility that the stroke was caused by trauma. Dr. H. testified that Mr. M.'s medical history ruled out the possibility that the stroke was caused by chronic hypertension.

Dr. R. was Mr. M.'s treating neurologist, in his opinion, Mr. M.'s stroke was caused by trauma to the head as a consequence of his truck colliding with the vehicles or as he exited his truck. Dr. R. agreed with Dr. H. that either a coupe contra coupe brain injury or a transient spike in blood pressure due to anxiety could have caused the stroke. As well, Dr. R. thought it possible that the effects of trauma and a transient spike in blood pressure could have acted in combination to cause the stroke. He disagreed that one could have a hypertensive stroke in the absence of hypertension as posited by Dr. S.

Dr. F.S., who was qualified as an expert in neurology, testified on behalf of Dominion. In his opinion, the location and size of the haemorrhage together with no significant head trauma led him to conclude that Mr. M. had suffered a spontaneous stroke. Mr. M.'s low platelet count, high INR levels and his history of excessive drinking and smoking contributed to his opinion that Mr. M. had a higher risk of stroke than most people. Dr. F.S. concluded that a stroke spontaneously occurred on November 24, 2004. Dr. F.S. noted that a possible cause of stroke, in the absence of chronic hypertension, was a sudden surge in blood pressure. He also referred to studies which have attributed an increased risk of stroke to alcohol consumption and binge drinking. But he testified that there was no evidence that Mr. M. suffered a surge in blood pressure.

Dr. Mo., who was also qualified as an expert in neurology, testified on behalf of Dominion. In his opinion the more likely cause was hypertension or alcohol abuse. He held a similar opinion to Dr. F.S. that Mr. M. was at increased risk for stroke due to his history of alcohol consumption and smoking. He too agreed that strokes may be caused by extreme physical exertion. However, he did not agree that a transient spike in blood pressure caused by emotional stress could cause the stroke experienced by Mr. M.

Dr. S., was qualified as an expert in neurosurgery and testified for Dominion. In his first report, Dr. S. stated that he reviewed the ambulance call report, the emergency room records and the initial history. He found no references to blood pressure recordings and no indications of trauma in either the ambulance call report or the emergency room records. Dr. S. also stated he did not have the benefit of Mr. M.'s medical history. Notwithstanding, Dr. S. concluded that Mr. M.'s stroke was a result of hypertension rather than trauma. He went on to author 5 addendums to his report after he was provided with additional information. Dr. S.' opinion, that Mr. M. suffered a stroke caused by hypertension, was not altered. Dr. S. testified that his reference to hypertension in his reports referred to acute hypertension. He continued to be of the opinion that Mr. M.'s stroke could not have been caused by trauma as a result of the impact.In his opinion, it was possible to have a hypertensive stroke in the presence of a normal blood pressure reading.

All the doctors agreed that Mr. M. did not have a history of chronic hypertension.

Dr. S. erred in stating there were no blood pressure readings in the ambulance call report and no note of head trauma. There were 3 blood pressure readings and a description of a ½ inch contusion to the right temporal lobe of the skull. The emergency room triage note indicated "a right zygomatic hematoma." The arbitrator found that Dr. S.’ initial report was based on erroneous information and therefore his conclusion was flawed. Further, the arbitrator did not accept that a hypertensive stroke was possible where there was a normal blood pressure reading. Therefore, the arbitrator placed no weight on his evidence.

The arbitrator accepted that severe emotional stress could cause a precipitous rise in blood pressure resulting in a stroke. The arbitrator found that Mr. M.'s alcohol consumption, smoking and reduced clotting ability put him at greater risk of stroke than other men of his age. As well, the arbitrator found that the blood pressure readings taken at the scene were significantly higher than those found in Mr. M.'s pre-accident medical records and were evidence of a surge in blood pressure. Further, there was a decrease in Mr. M's blood pressure, from 150/80 to 142, between 5:36 a.m. and 5:55 a.m. the arbitrator inferred that there was a similar decrease in his blood pressure in the 50 minutes between the time of the impact and the first reading.

Mr. M. had been drinking prior to going for coffee in the early morning hours when it was dark and raining. Minutes prior to the impact Mr. M. had negotiated a challenging driveway to purchase his coffee. There was no evidence that Mr. M. complained of headache or illness prior to being found. There was no evidence that he was driving erratically prior to the first impact. On a balance of probabilities it was more likely that Mr. M. was momentarily distracted. His truck struck the first car. The impact caused Mr. M. to panic. He knew he had been drinking. He knew he could lose his driver's license and thereby his livelihood. He knew that a loss of his job as a truck driver would have serious financial repercussions for his family. He knew that his nine year old son was alone. Mr. M.'s actions after bringing his truck to a stop led the arbitrator to conclude that he was in fear of being charged with impaired driving. He removed the keys from the ignition. He dropped them on the floor. He got out of the vehicle and positioned himself at the front passenger side of the truck. All of this was done when Mr. M. was experiencing diminishing cognitive and physical capacity. His actions had the desired effect, causing the constable to abandon his impaired driving investigation because he could not establish that Mr. M. was the driver of the vehicle.

The medical testimony and Mr. M.'s medical records established that he had various risk factors for stroke. He was vulnerable to a stroke caused by a sudden fear induced surge of blood pressure. The arbitrator found that the primary cause of the stroke was a panic reaction to his truck's impact with the first vehicle. His panic caused a precipitous rise in blood pressure which interacted with Mr. M.'s susceptibility to stroke causing the large intraparenchymal bleed or intracerebral haemorrhage or stroke. As well, the arbitrator accepted that the impact with the first vehicle and a resulting coupe contra coupe movement of the brain may have acted in concert with the increased blood pressure to cause the stroke.

Events were described as spontaneous or idiopathic when there was no other explanation. In the circumstances of this case, the logical inference to be drawn was the first impact caused the stroke. The second and third impacts were caused by Mr. M.'s deteriorating cognitive abilities resulting from the stroke.

On the basis of the foregoing, the arbitrator found that Mr. M.'s impairments were "directly caused by the use or operation" of his truck pursuant to subsection 2(1) of the Schedule.

Posted under Accident Benefit News, Automobile Accident Benefits, Brain Injury, Car Accidents, Drunk Driving Accidents, Slip and Fall Injury, Truck Accidents

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Deutschmann Law serves South-Western Ontario with offices in Kitchener-Waterloo, Cambridge, Woodstock, Brantford, Stratford and Ayr. The law practice of Robert Deutschmann focuses almost exclusively in personal injury and disability insurance matters. For more information, please visit or call us toll-free at 1-866-414-4878.

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