Tag Archives: Quentin Stone

Retro Report Nails the Nanny Story

Louise Woodward, 1997

Louise Woodward, 1997

Retro Report producer Miriam Weintraub, in her recent documentary looking back at the story of “Boston nanny” Louise Woodward, has identified the key fact about news coverage of the case in the 1990s: In its fixation on working parents and teenage nannies, the press missed the real story, the actual medical debate about shaken baby theory.

“But today the shaken baby diagnosis is under increasing scrutiny,” the narrator informs us, cutting to a quote from Dr. Patrick Barnes:

“There is no doubt that errors have been made and injustices have resulted.”

Dr. Barnes, a pediatric neuroradiologist, testified for the prosecution at the Woodward trial but later began doubting what he’d learned from his mentors and peers about infant head injury, as he explains on camera:

“Particularly when I started going to the literature outside of the box I was in, in the child abuse literature box, and looking at the science of traumatic head injury written by true specialists and experts in those fields. Then I began to be concerned that for the prior 15-20 years I may be wrong.”

Prosecutor Martha Coakley, however, stands by the conviction and the diagnosis:

We knew that the injuries this child had suffered, given that he was fine that morning and by the time he was in the emergency room he was on death’s door, those had been inflicted injuries. They were severe, they were acute and they were not accidental.

And Dr. Robert Block, past president of the American Academy of Pediatrics (AAP), says there has been no change in thinking among child abuse experts:

There are a few people who have generated opposing points of view for whatever reason. But, if you talk to child abuse pediatricians who work with these clinical cases all the time you will find that opinion about the presence of shaken baby syndrome or abusive head trauma has not shifted one iota.

At the time of the Woodward trial, the official name of the diagnosis was still Shaken Baby Syndrome (SBS), as described in both the 1993 AAP position statement and the 2001 AAP technical report. By the time Dr. Block was interviewed by Retro Report in 2015, the AAP had issued its 2009 update, changing the name to Abusive Head Trauma (AHT) with this explanation:

“The term ‘shaken baby syndrome’ has become synonymous in public discourse with AHT in all its forms.17 The term is sometimes used inaccurately to describe infants with impact injury alone or with multiple mechanisms of head and brain injury and focuses on a specific mechanism of injury rather than the abusive event that was perpetrated against a helpless victim. Legal challenges to the term ‘shaken baby syndrome’ can distract from the more important questions of accountability of the perpetrator and/or the safety of the victim.”

I recommend following the link from this quote to the abstract for footnote 17, Lazoritz and Baldwin (1997), “The whiplash shaken infant syndrome: Has Caffey’s syndrome changed, or have we changed his syndrome?,” which documents how far the diagnosis had strayed in 1997 from Caffey’s first definitions. Following some of the further links on that page, to the abstracts for Bandak 2005 (“Shaken baby syndrome, a biomechanics analysis of injury mechanisms”), for example, and Talbert 2009  (“The nature of shaken baby syndrome injuries and the significance of the ‘lucid interval’), illustrates some of the unresolved questions about the condition.

The Retro Report narration identifies the traditional triad as the defining features of shaken baby syndrome at the time of the Woodward trial:

“For decades, when doctors saw a child with a particular set of symptoms known as the triad—bleeding behind the eyes, bleeding on the brain, and brain swelling—they would conclude there was only one possible cause: shaking.”

But Dr. Block says doctors do not rely on the triad:

“Nobody looks at a baby with those three things and says, ah ha, shaken baby syndrome… We go through a very intensive history taking, which involves looking at the last 24 to 48 hours of this baby’s life. And then we do what’s called a differential diagnosis after doing a bunch of laboratory tests. Our job is to make sure that we’ve looked at every other possibility.”

As this blog has reported before, however, in 1998 several dozen child abuse experts signed a letter about the Woodward case that took this position:

The shaken baby syndrome (with or without evidence of impact) is now a well-characterized clinical and pathological entity with diagnostic features in severe cases virtually unique to this type of injury—swelling of the brain (cerebral edema) secondary to severe brain injury, bleeding within the head (subdural  hemorrhage), and bleeding in the interior linings of the eyes (retinal hemorrhages). Let those who would challenge the specificity of these diagnostic features first do so in the peer-reviewed literature, before speculating on other causes in court.

Dr. Block’s parting quote explains his priority in the shaken baby debate:

I think it’s reasonable to worry and be as careful as we can to make sure that people who are convicted are appropriately convicted. But to talk about their conviction negates the fact that we really need to be talking about the children. It’s the children who are affected in each and every case. It’s the children who are devastated or killed.

Quentin Stone

Quentin Stone

The Retro Report documentary also features the case of Quentin Stone in Yolo County, California, who was found innocent by a jury in May of 2014 but is still fighting in family court for reunification with his wife and two surviving sons. “I don’t think there’s really a way to explain what it feels like to lose your entire family,” Stone tells the interviewer.

The Retro Report posting was published in conjunction with a New York Times article by Clyde Haberman that includes two additional short videos, a “mini-doc” featuring professor Adele Bernhard from the Pace Law School Post-Conviction Project talking about the René Bailey case, and an interview with pioneering pediatric neurosurgeon Dr. A. Norman Guthkelch, the first person to propose in print that shaking an infant could cause subdural hematoma.

Melissa Calusinski

Melissa Calusinski

In other shaken baby news, the lawyer for convicted day care worker Melissa Calusinski in Illinois has made a small step toward a possible appeal. According to the Chicago Tribune, a judge is considering attorney Kathleen Zellner’s motion for a hearing on what she says is new x-ray evidence in the case. Earlier this week, the judge gave the state 90 days to respond to Zellner’s request. Calusinski’s case moved to the national stage this past winter, when a 48 Hours report, “Blaming Melissa,” raised questions about the evidence and the interrogation that led to a confession she later recanted. Tribune reporter Lisa Black published this article in June about the current motion and the possible new evidence.

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Filed under abusive head trauma, AHT, SBS, shaken baby syndrome

A Yolo County Jury Believes the Father

SamStone

Sam Stone, 2012

A jury in Yolo County, California, has found 40-year-old Quentin Stone not guilty of child endangerment and abuse, in a case that highlights the limitations of the common knowledge about both the potential danger of short falls and the timing of symptoms following infant head injury.

The story begins in early September of 2012, when Stone brought his son Sam, then two months old, to the Kaiser clinic with a report that the boy had fallen from a bed onto a hardwood floor. Sam showed no symptoms at the time, and doctors found nothing alarming during their examination. The boy was brought in again the next day with a report of projectile vomiting, and again he was examined and sent home. A series of emails and another in-person visit document his parents’ ongoing concern with Sam’s continued vomiting and episodes of “breath holding” over the following days and weeks.

Sam Stone had both a twin and an older brother.

Sam Stone had both a twin and an older brother.

Then on October 3, Sam collapsed and his father rushed the unconscious boy to the hospital, where scans revealed both fresh and chronic subdural hematomas.  Doctors diagnosed Sam as the victim of abusive head trauma. According to trial coverage by Sarah Dowling at the Democrat News, prosecutor Steven Mount dismissed Stone’s claim that his son had fallen off a bed in September:

Mount said except for Stone’s testimony, there is no evidence that a fall even happened. Instead, Stone could have gotten angry with the child or simply wanted to stop him from crying. Regardless of the motivation, Mount said that Stone could have shaken the child, coming up with the “fall story” to cover it up.

Stone had said he wasn’t in the room when the boy fell. He had left Sam in the middle of a king-sized bed and gone briefly out to the garage. When he returned, Sam was on the floor. Sam’s twin brother Henry was asleep in a swing, but Stone thought their other son Jack, two-and-a-half at the time, might have pulled the boy off the bed.

Public defender Monica Brushia said she was sure from the beginning that her client was innocent. “Just reading the police report, I knew the doctors had misdiagnosed Sam, which led to his death… This was a very difficult and emotional case.” Both she and co-counsel Martha Sequeira cried real tears while preparing for trial, Brushia reports, and again when the verdict was read.

Brushia shared a Facebook posting from one of the jurors, whose account of the trial included this paragraph:

Today, an innocent man was set free of blame and accusation of the death of his son. Mr Stone didn’t abuse his child, he did everything he could do to save him. The sad fact is Dr’s make mistakes, sometimes they miss things, sometimes they are wrong. The death of this child really was at the hands of 2 Kaiser Dr’s, who went against what another Kaiser specialist had warned.

OnTheCouchMr. Stone is now trying to regain custody of his surviving sons, with whom he is allowed only weekly supervised visits.

The prosecution relied on expert testimony from Dr. Kevin Coulter, pediatrics division chief at the University of California, Davis, Medical Center, and forensic pathologist Dr. Bennet Omalu, also on the UCD Medical Center faculty and chief medical examiner of San Joaquin County. The defense called forensic pathologist Dr. John Plunkett, pediatric neuroradiologist Dr. Pat Barnes, and ER physician Dr. Steven Gabaeff.

Dr. Plunkett’s report included a few paragraphs that might be educational for anyone working on one of these cases. On the subject of chronic subdural hematoma, for example, Plunkett wrote:

Sam had a large chronic SDH and a small acute left-sided SDH when Woodland and Davis’ personnel evaluated him. A chronic SDH, sometimes referred to as an hygroma, must begin either as an acute SDH or as an intradural effusion. A predominance of blood or blood products typifies a hematoma. A high protein-content fluid with medical imaging signal features similar to cerebral spinal fluid (CSF) characterizes an effusion. It is often not possible (clinically or radiographically) to determine whether a chronic SDH began as intradural bleeding or as an effusion. If the chronic SDH started as acute bleeding, the acute SDH may be large and require surgical evacuation, may resolve and heal with no apparent signs and symptoms, or may become “chronic”. If the acute hematoma does not resolve, it develops a membrane that is extremely fragile and has many new, immature blood vessels. These blood vessels may rupture, causing “new” bleeding and an increase in the size of the initial SDH. There have been a number of studies to determine why some acute hematomas become chronic. The best explanation appears to be that the unique characteristics of the clotting system in the hematoma itself allow the bleeding to persist rather than to heal. The Medical Imaging literature has documented this phenomenon in studies following hospitalized SDH patients with serial CT and MR scans, which show new bleeding in established hematomas in the absence of trauma. “New” trauma is not required for this progression.

And regarding the origin of subdural bleeds, which can be caused by impact but also by a number of non-traumatic circumstances:

Impact may cause dural compartment bleeding in an infant. The infant skull is not rigid, and may deform significantly during an impact, even without fracture. This deformation, or inbending, distorts the underlying brain, and may stretch the bridging veins, may physically alter the dural venous plexuses, and/or may activate the trigeminal (“V”) cranial nerve. If these changes exceed the tensile failure threshold for the veins or the plexuses, they rupture and bleed into the dural border cell layer (“the subdural space”). If the rupture involves relatively large vessels, the bleeding may be significant and lead to rapid compromise of brain function and death, even with timely and appropriate surgical intervention. Alternatively, the bleeding may be relatively slow and even asymptomatic for a considerable time, and only lead to clinical signs if there is an increase in head circumference or an increase in intracranial pressure, the latter triggering vomiting, seizures, and/or compromise of respiratory function. The impact may be apparently innocuous and extremely low velocity. Scientific studies using adult human volunteers (scaled to the infant), cadavers, non-human primates, and other experimental animals; accident reconstruction; computer modeling; and finite element analysis have established and validated infant human brain injury g and Head Injury Criterion (HIC) thresholds. The current federal head-injury standard for a 6-month-old infant represented by the CRABI-6 dummy is a Head Injury Criterion threshold of 390 and a peak g threshold of 50 (50 times the acceleration due to gravity). The researchers have not established thresholds for a 3-month-old infant. However, they are lower than for a 6-month-old infant. A simple headfirst impact to a non- yielding surface from as little as a two-foot fall will usually exceed these thresholds. Fatal impact head injury in an infant does not require a motor vehicle accident or a fall from a two- story building.

These thresholds imply an “all” (risk of severe injury or death) or “none” (no risk of severe injury or death) event. However, biological systems including human beings are seldom “all” or “none”. Further, underlying conditions such as an abnormality of the blood coagulation system, individual cerebral vascular anatomy, cerebral atrophy or increased extra-axial fluid, and an individual’s unique metabolic pathways may alter the threshold and outcome for impact trauma.

Sam had a history of a significant impact event, but I will discuss briefly non-impact causes of dural bleeding for completeness. I do not think that any of these conditions caused or contributed to Sam’s initial acute bleeding with the possible exception of birth or an increase in extra-axial subarachnoid space (so-called “benign” expansion of the subarachnoid space, or BESS).

A number of “natural diseases” and metabolic abnormalities predispose to, or are associated with, SDH. However, anatomical research suggests that damage to the dural venous plexuses rather than traumatic stretching of the bridging veins causes the SDH in these cases. Examples include but are not limited to:

  • The birth process itself, including C-section delivery;
  • Lumbar puncture resulting in intracranial hypotension;
  • A variety of infections caused by bacteria and viruses;
  • Breakthrough bleeding associated with cortical venous thrombosis (CVT), or sagittal sinus thrombosis (SST) or other large-sinus thrombosis;
  • Inborn errors of metabolism such as glutaric aciduria and Menkes Disease;
  • Inherited or acquired coagulation abnormalities, such as hypofibrinogenemia, Vitamin K deficiency, or thrombocytosis;
  • Structural abnormities such as an arachnoid cyst, increased extra-axial fluid, or subdural hygromas;
  • V ascular malformations such as, but not limited to, A V malformations;
  • Poorly understood inflammatory processes such as hemophagocytic lymphohistiocytosis and post-vaccination reactions; and
  • Spontaneous, in which the bleeding develops with no recognizable cause.
Finally, hypoxia or anoxia may cause subdural hemorrhage either as a primary or as a secondary event. For example, hypoxic damage to the dural venous plexuses rather than mechanical trauma is the most likely cause for intradural hemorrhage that may lead to subdural hemorrhage when hypoxia is associated with an increase in intracranial pressure.

 

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Filed under abusive head trauma, AHT, Dr. John Plunkett, Falsely accused, parents accused, SBS, shaken baby syndrome