1/13. "homicide by heart attack" revisited.The sudden death of a person caused by an arrhythmia that is induced by physical and/or emotional stress provoked by the criminal activity of another person is sometimes referred to as "homicide by heart attack." Published criteria for such an event relate to situations where no physical contact occurs between the perpetrator and the victim. Situations involving physical contact, but with absence of lethal injuries, are frequently treated is a similar fashion by forensic pathologists. Herein, we propose a set of modified criteria, which include cases where physical contact has occurred. Five examples of so-called "homicide by heart attack" are presented, including a 40-year-old man who was struck in the head with a wooden statue, a 74-year-old man who was punched in the jaw by a robber, a 66-year-old woman who was started awake by a home-intruder, a 67-year-old woman who struggled with a would-be purse-snatcher in a parking lot, and a 52-year-old man who was in a physical altercation with a younger man. In each instance, autopsy revealed the presence of severe, underlying heart disease, as well as absence of lethal injuries. In each case, investigative information was such that the emotional and/or physical stress associated with the criminal activity of another individual was deemed contributory to the death. The presumed mechanism of death in each case was a cardiac dysrhythmia related to underlying heart disease, but initiated by the emotional and/or physical stress.- - - - - - - - - - ranking = 1keywords = motion (Clic here for more details about this article) |
2/13. A cognitive neuropsychological and psychophysiological investigation of a patient who exhibited an acute exacerbated behavioural response during innocuous somatosensory stimulation and movement.We report findings from a cognitive neuropsychological and psychophysiological investigation of a patient who displayed an exacerbated acute emotional expression during movement, innocuous, and aversive somatosensory stimulation. The condition developed in the context of non-specific white matter ischaemia along with abnormalities in the cortical white matter of the left anterior parietal lobe, and subcortical white matter of the left Sylvian cortex. Cognitive neuropsychological assessment revealed a pronounced deficiency in executive function, relative to IQ, memory, attention, language and visual processing. Compared to a normal control group, the patient [EQ] displayed a significantly elevated skin conductance level during both innocuous and aversive somatosensory stimulation. His pain tolerance was also significantly reduced. Despite this, EQ remained able to accurately describe the form of stimulation taking place, and to rate the levels of pain intensity and pain affect. These results suggest that EQ's exaggerated behavioural response and reduced pain tolerance to somatosensory stimulation may be linked to cognitive changes, possibly related to increased apprehension and fear, rather than altered pain intensity or pain affect per se.- - - - - - - - - - ranking = 0.33333333333333keywords = motion (Clic here for more details about this article) |
3/13. Cardiac arrest: abdominal CT imaging features.We report computed tomographic findings of two unusual cases of sudden cardiac arrest. The imaging features documented include reflux of contrast into the abdomen as indicated by opacification of renal veins, hepatic veins, inferior vena cava, and hepatic and renal parenchyma. The reflux of contrast into the portal vein in one patient has not been described in the literature. The thoracic findings were reflux of contrast into the coronary sinus, nonopacificaton of the left ventricle with intravenous contrast, and lack of cardiac motion artifact.- - - - - - - - - - ranking = 0.33333333333333keywords = motion (Clic here for more details about this article) |
4/13. Surviving sudden loss: when life, death, and technology collide.patients who survive sudden cardiac arrest are at risk for anxiety, depression, and other psychosocial difficulties. By exploring the impact of surviving sudden cardiac arrest as it relates to the expectations and emotions of patients and their families, nurses can promote realistic and readily usable processes for facilitation of healthy grieving, adaptive coping, and reinvestment in life.- - - - - - - - - - ranking = 0.33333333333333keywords = motion (Clic here for more details about this article) |
5/13. Differential impact of parvocellular and magnocellular pathways on visual impairment in apperceptive agnosia?The term "visual form agnosia" describes a disorder characterized by problems recognizing objects, poor copying,and distinguishing between simple geometric shapes despite normal intellectual abilities. Visual agnosia has been interpreted as a disorder of the magnocellular visual system, caused by an inability to separate figure from ground by sampling information from extended regions of space and to integrate it with fine-grain local information. However,this interpretation has hardly been tested with neuropsychological or functional brain imaging methods, mainly because the magnocellular and parvocellular structures are highly interconnected in the visual system.We studied a patient (AM) who had suffered a sudden heart arrest, causing hypoxic brain damage. He was/is severely agnosic, as apparent in both the Birmingham Object Recognition Battery and the Visual Object and Space Battery. First- and especially second-order motion perception was also impaired, but AM experienced no problems in grasping and navigating through space. The patient revealed a normal P100 in visual evoked potentials both with colored and fine-grained achromatic checkerboards. But the amplitude of the P100 was clearly decreased if a coarse achromatic checkerboard was presented.The physiological and neuropsychological findings indicate that AM experienced problems integrating information over extended regions of space and in detecting second-order motion. This may be interpreted as a disorder of the magnocellular system, with intact parvocellular system and therefore preserved ability to detect both local features and colors.- - - - - - - - - - ranking = 0.66666666666667keywords = motion (Clic here for more details about this article) |
6/13. Evidence for the 'cardiac pump theory' in cardiopulmonary resuscitation in man by transesophageal echocardiography.There are two theories to explain the mechanism of blood flow during cardiopulmonary resuscitation: The 'Cardiac Pump Theory' and the 'Thoracic Pump Theory'. We have performed transesophageal echocardiography during the resuscitation of a patient with cardiopulmonary arrest. By this method we could study the motion of the aortic, mitral and tricuspid valves and the changes in ventricular size during cardiopulmonary resuscitation in man. We demonstrated an opening of the aortic valve during thoracic compression with simultaneous closure of the mitral and tricuspid valves. During relaxation of the chest, a rapid opening of the atrioventricular valves and closure of the aortic valve was noted. Short interruption of cardiopulmonary resuscitation to test for spontaneous heart action lead to echocontrast in all four heart chambers through stasis of blood, which resolved on continuation of cardiopulmonary resuscitation. This 'washing out' phenomenon enables visualization of blood flow through the aortic valve during compression, and through the mitral valve during relaxation. These observations favour the Cardiac Pump Theory as the predominant hemodynamic principle of blood flow during cardiopulmonary resuscitation in man.- - - - - - - - - - ranking = 0.33333333333333keywords = motion (Clic here for more details about this article) |
7/13. Emotion-triggered cardiac asystole-inducing neurocardiogenic syncope.The pathophysiology of neurocardiogenic syncope (NCS) is multifactorial. Recurrent syncopal episodes can result in injury and can provoke substantial anxiety among patients. Although an abundance of descriptions of various forms of syncope have been reported in the literature, few articles to date address a documented case due to emotional stress or sound. This is a report of a 31-year-old woman who fainted after being startled by someone sneezing. review of the episode on her event recorder revealed a transient cardiac asystole of 10 seconds. We discuss the incidence of NCS and the proposed mechanism by which this syncopal event occurred.- - - - - - - - - - ranking = 1.6666666666667keywords = motion (Clic here for more details about this article) |
8/13. Management of life-threatening bradycardia in spinal cord injury.A 19-year-old man with SCI at C5 suffered recurrent life-threatening bradycardia and asystole. We detail his course, which included continual movement in a motion bed and propantheline-bromide (Pro-Banthine) therapy, over 3 1/2 months. Possible causes of bradycardia and autonomic dysfunction in this setting are discussed.- - - - - - - - - - ranking = 0.33333333333333keywords = motion (Clic here for more details about this article) |
9/13. Complete maternal and fetal recovery after prolonged cardiac arrest.A case of complete maternal and fetal recovery after prolonged cardiac arrest from massive lidocaine overdose is presented. A 27-year-old woman at 15 weeks gestation had a complete neurologic recovery after 22 minutes of CPR, including 19 minutes of electromechanical dissociation and asystole, with normal fetal heart function and fetal motion confirmed by ultrasound immediately after resuscitation. The patient delivered a healthy and neurologically normal infant at 40 weeks gestation. This is the longest cardiac arrest in early pregnancy reported in the medical literature with normal maternal and fetal outcome.- - - - - - - - - - ranking = 0.33333333333333keywords = motion (Clic here for more details about this article) |
10/13. Constitutional predisposition to vasovagal syncope: an additional risk factor in patients exposed to electrical injuries?An hour after a 220 V electric shock a patient who was susceptible to mild vasovagal symptoms in response to emotional stress had a severe episode of cardiac arrest in response to insertion of a cannula. No myocardial damage or conduction abnormalities were detected by serial 12 lead electrocardiograms. patients with a history of vasovagal reactions may be at high risk of developing lethal sinus node or conduction disturbances after electrical injuries. Psychological stresses should be avoided in the management of such patients.- - - - - - - - - - ranking = 0.33333333333333keywords = motion (Clic here for more details about this article) |
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