Sudden infant death with periventricular leukomalacia

Periventricular leukomalacia (PVL) is a form of cerebral infarction occurring in neonates, particularly in low-weight and premature infants. PVL is well-known to neonatologists, but generally considered nonfatal. Many infants with PVL die in the hospital with multiple medical problems. Those infants with PVL who survive because of intensive care will have serious motor and sensory deficits, but these problems are rarely recognized before one year of age. When infants with PVL die at home, death seems sudden and unexpected. However, it is important to distinguish death caused by PVL from the Sudden Infant Death Syndrome because the implications for the family are quite different. This case report emphasizes that PVL may be fatal.     

Sudden infant death with congenital cytomegalic inclusion disease

Cytomegalic inclusion disease was found in a 5-week-old infant who died unexpectedly. Myocarditis was observed; it was believed to be the cause of this unexpected death.     

Sudden infant death syndrome in Japan

Two autopsied cases are presented, one involving a 5-month-old infant, and a 6-month-old infant both of whom died suddenly and unexpectedly. The incidence of sudden infant death syndrome in Japan is 1.2 per 1,000 babies live births. Among all cases autopsied in the departments of legal or forensic medicine in 78 universities or colleges of Japan, the incidence was 15 (0.5%) per 3,329 in 1984 and 20 (0.6%) per 3,150 in 1985.     

Sudden death in an 8-week-old infant with Beckwith-Wiedemann syndrome

The authors report a case of a 2-month-old girl diagnosed with Beckwith-Wiedemann syndrome (BWS) who was born prematurely and died suddenly in the hospital just before being discharged. BWS is a malformation syndrome associated with an increased risk of childhood tumors. The major features of BWS are macroglossia, abdominal wall defects, and visceromegaly, frequently leading to premature birth. Due to complex inheritance patterns, a predominance of nonfamilial cases, and the variability in expression of the features (termed incomplete penetrance), the risk of delayed diagnosis is evident. Secondary to hyperplastic pancreatic islands, hypoglycemia occurs frequently, and if not anticipated, adequate measures for prevention of hypoglycemic episodes may be delayed, resulting in possible intellectual deficits. The infant presented here died of natural causes: immaturity of the lungs resulting in marginal respiratory function and compounded by increased risk for asphyxia secondary to the enlarged tongue. The clinical history and findings in this infant are discussed in respect to the genetic syndrome with their relevance to medicolegal examination and the causes and manner of death.     

Sudden infant death--focus subject of medico-legal research

The compilation of research activities concerning SID in the field of legal medicine could only choose those out of a great abundance of high-quality examinations which represent applied research. By this they have contributed either to the clarifying of the aetiology which has not been cleared up or to the prophylaxis. For this looking through in a widest sense the basic approach was to consider SID being the result of an intrinsic and/or extrinsic disturbance of the modulation of respiratory regulation of the infant. This namely means a metabolic disturbance of respiratory neurons. One must not share this opinion even if it is given a certain plausibility by newer physiological examinations. But this also means that some examinations did not receive the acknowledgement which they would have received if there had been an immunological approach. The compilation was completely done without a presentation of the primary crisis intervention and the long-term care as being a fundamental medico-legal approach. Altogether may be summarized that legal medicine has completely fulfilled its duty to take care of the problem SID and that the examinations did not remain without success.     

Sudden infant death due to asplenia syndrome

An apparently healthy 80-day-old boy died suddenly for no apparent reason. The autopsy revealed that the patient had had congenital asplenia, extensive cardiovascular anomalies, and other organ malformations, including trisegmented lungs, hypoplasia of the corpus callosum and cranial bones, a symmetrical liver, accessory hepatic tissue in the adrenal glands, malrotation of the intestine, and hypoplasia of the greater omentum.     

Sudden death of an infant with 'an early epileptic encephalopathy'.

This article reports an autopsy case of sudden death of an infant with an infrequent encephalopathy involving epileptic episodes. The infant was a 1-year and 10-month-old boy, who had a history of the first convulsive seizures in the third month after birth. The clinical diagnosis was described as 'an early infantile epileptic encephalopathy with suppression-bursts' (Ohtahara syndrome). On a winter day, he was collapsed following a high fever and was already dead on the arrival at a hospital. The body was small for the age and poorly nourished. The autopsy and postmortem magnetic resonance imaging scan (MRI) of formalin-fixed brain revealed advanced unsymmetric brain atrophy with cortical dysplasia, which were prominent in the left temporal and right occipital lobes, and sclerotic atrophy of the parahippocampal gyri, additionally showing a feature of the olivo-ponto-cerebellar atrophy. However, the cause of death was pathologically and microbiologically determined as bacterial bronchopneumonia following pulmonary infection of the influenza A virus. In sudden death cases of physically handicapped infants, the investigation of viral infection in consideration of an epidemiological survey is important even when the death can be pathomorphologically explained.     

Sudden infant death and liver phosphoenolpyruvate carboxykinase analysis

In an effort to substantiate the impaired gluconeogenesis-terminal hypoglycemia hypothesis of sudden infant death syndrome (SIDS), 52 infants ranging from 3 weeks to 7 months of age which had been brought to autopsy were studied. The stomach contents, vitreous humor glucose concentrations, hepatic glycogen content and hepatic phospho-enolpyruvate carboxykinase (PEPCK) activity were measured as part of the laboratory component of the postmortem investigation. The stomach contents, vitreous humor glucose concentrations and liver glycogen content were similar in SIDS/and non-SIDS victims. PEPCK activity was, however, significantly lower in SIDS (p < 0.001) victims and in SIDS with other findings (p < 0.01) victims when compared to non-SIDS victims. Despite the fact that SIDS victims had lower hepatic PEPCK activity and hence potentially lower gluconeogenic capacity, terminal hypoglycemia could not be demonstrated in this group as compared to the SIDS with other findings and the non-SIDS infants. The impaired gluconeogenesis-terminal hypoglycemia hypothesis thus could not be substantiated.     

Sudden infant death due to neurofibromatosis type I

Sudden infant death syndrome (SIDS) is the unexpected death of an infant under the age of 1 year, where a complete autopsy, including scene investigation, fails to reveal a cause of death. Although the frequency of SIDS has decreased almost 50% over the past 10 years, it remains the leading cause of death in infants aged 1 to 6 months. SIDS is a diagnosis of exclusion and requires the elimination of a wide range of possible causes, including asphyxia, poisoning, abuse, occult heart disease, and other natural disease processes. In this report, we describe the case of an infant death initially suspected to be a SIDS death in which autopsy revealed an optic pathway glioma (optic glioma or hypothalamic glioma) and other stigmata of neurofibromatosis type I.     

Sudden infant death with anomalous origin of the left coronary artery.

Autopsy of a 3-month-old girl, an apparent case of sudden infant death syndrome, revealed anomalous origin of the left coronary artery from the right aortic sinus. Acute angulation of the left coronary artery along the aortic root, as well as a focal intramyocardial course within the ventricular septum, may have contributed to episodic luminal narrowing. Anomalous coronary origins of similar type have been associated with sudden death in children, teenagers, and young adults, but have not necessarily been associated with sudden death in older adults. Somewhat similar malformations have been reported in sudden infant death; two cases involved the left coronary artery and six involved the right.     

Sudden infant death in a tropical environment: Singapore's experience

A total of 206 cases of sudden infant deaths examined at the Institute of Science and Forensic Medicine, Singapore, over a 5 year period (1989–1993) were identified to assess the pattern of sudden death in this age group, which was subdivided into the neonatal and post-neonatal periods. A total of 34% (70) of infant deaths occurred in neonatal life and the remaining 66% (136) in the post-neonatal period; 90% of the neonatal deaths were natural, of which over half were due to congenital heart disease and complications of prematurity. Unnatural deaths in this period were uncommon, there being only seven such deaths. In the post-neonatal period, unnatural deaths constituted 25% of the total with trauma and aspiration heading the list. Natural deaths in the post-neonatal period are predominantly due to infections (34%) and a group of sudden natural deaths with minimal findings (31%). The latter group may arguably represent cases of Sudden Infant Death Syndrome (SIDS). The yearly incidence of this group in our study varied between 0.08 to 0.2 per 1000 live births, which is considerably lower than the incidence quoted for Western populations. The criteria for the classification and the impact of sudden infant deaths in Asian countries are discussed.     

Sudden infant death syndrome: a subject of medicolegal research

During the last decade, much attention has been paid to the risk factors of sudden infant death syndrome (SIDS). Many researchers have demonstrated that infant-care practices are linked to the risk of SIDS. Prone sleeping, bed sharing, maternal substance abuse, and cigarette smoking have been reported to be significant potentially modifiable risk factors for SIDS. Despite the reports that the incidence of SIDS has decreased by 38% in the United States, it remains the leading cause of death in the first year of life. Deaths resulting from child abuse or neglect inflicted or permitted by their caretakers being second only to SIDS in infant mortalities and some recommendations regarding the differentiation of SIDS and child abuse have generated speculation that some cases of infanticide were misdiagnosed as SIDS. To reach a proper conclusion as to the cause and manner of death of an infant who died suddenly and unexpectedly, investigation must be thorough and professional.     

Sudden unexpected infant death due to fibroma of the heart

A 7-month-old previously healthy female infant was found dead in her crib by her mother shortly after having been laid down to sleep following the noontime feeding. Because the child did not suffer from an acute illness and no other evidence pointed to a cause of death, it was initially assumed by the police that she had died of sudden infant death syndrome. At autopsy, however, the cause of death was determined to be cardiac arrhythmia secondary to fibroma of the heart.     

Sudden infant death from atelectasis due to amniotic fluid aspiration

An infant girl, whose hands showed lobster-claw deformity, was found dead in her bed at 17 days of age. Macroscopic and microscopic examination of the lungs showed fatal atelectasis. The alveolar spaces were filled with fluid, epithelial cells, and squamous debris. These were the constituents of amniotic fluid aspirated before birth. The present case suggested that some sudden unexpected deaths in early infancy are delayed deaths caused by amniotic fluid aspiration.     

Sudden infant death syndrome. Morphology update for forensic pathologists--1985

Herein presented are current concepts regarding the sudden infant death syndrome (SIDS) including a definition of the phenomenon and a discussion of its present role in post-neonatal mortality in this country, a few of the recently published results (both clinical and morphological) of the NICHD Cooperative Epidemiologic Study, a report on the status of the so-called "Tissue-Markers for Hypoxia" and a summary of other recent morphologic observations.