1/13. Left coronary artery anomaly: an often unsuspected cause of sudden death in the military athlete.More than 300,000 cases of sudden cardiac death (SCD) occur in the united states each year. Left coronary artery anomaly (LCAA), although rare, is second only to hypertrophic cardiomyopathy as the most common cause of SCD associated with structural cardiovascular abnormalities. This case illustrates SCD secondary to LCAA in a military athlete. A 19-year-old soldier collapsed after an 8-km run. On arrival at the emergency room, he was unresponsive and in asystole. Despite successful resuscitation and aggressive management, the patient died the next morning. autopsy revealed an anomalous left coronary artery. LCAA-associated SCD is rare and usually seen in young individuals who collapse (and/or die) while exercising. A substantial proportion of these individuals experience prodromal symptoms of exertional chest pain, syncope, and/or sudden collapse. Early recognition and intervention are key to survival. Rapid, early imaging and invasive therapeutic measures leading to surgical correction may be the difference between life and death.- - - - - - - - - - ranking = 1keywords = chest pain, chest (Clic here for more details about this article) |
2/13. hyperventilation: cause or effect?A young person presenting with shortness of breath is common to the accident and emergency department. Usually this hyperventilation is anxiety related or a panic attack, but sometimes it can be caused by a serious underlying condition like pulmonary embolus. Acute shortness of breath in any patient should never be dismissed lightly. It is important to realise that pulmonary embolus can present without chest pain and with shortness of breath as the major symptom. Such patients can be distinguished by close attention to history and examination, risk factors for thromboembolic disease and the use of basic investigations (electrocardiogram, chest radiography and arterial blood gas analysis). A serious cause for shortness of breath must be excluded before labelling it as "hysteria" or "panic".- - - - - - - - - - ranking = 1.0376925646395keywords = chest pain, chest (Clic here for more details about this article) |
3/13. Psychosomatic disorders in pediatrics.Psychosomatic symptoms are by definition clinical symptoms with no underlying organic pathology. Common symptoms seen in pediatric age group include abdominal pain, headaches, chest pain, fatigue, limb pain, back pain, worry about health and difficulty breathing. These, more frequently seen symptoms should be differentiated from somatoform or neurotic disorders seen mainly in adults. The prevalence of psychosomatic complaints in children and adolescents has been reported to be between 10 and 25%. These symptoms are theorized to be a response to stress. Potential sources of stress in children and adolescents include schoolwork, family problems, peer pressure, chronic disease or disability in parents, family moves, psychiatric disorder in parents and poor coping abilities. Characteristics that favour psychosomatic basis for symptoms include vagueness of symptoms, varying intensity, inconsistent nature and pattern of symptoms, presence of multiple symptoms at the same time, chronic course with apparent good health, delay in seeking medical care, and lack of concern on the part of the patient. A thorough medical and psychosocial history and physical examination are the most valuable aspects of diagnostic evaluation. Organic etiology for the symptoms must be ruled out. Appropriate mental health consultation should be considered for further evaluation and treatment.- - - - - - - - - - ranking = 1keywords = chest pain, chest (Clic here for more details about this article) |
4/13. Central neurogenic hyperventilation with primary cerebral lymphoma: a case report.We report a case of a bright, alert patient with central neurogenic hyperventilation (CNH) associated with cerebral malignant lymphoma. CNH is a syndrome comprising normal or elevated arterial oxygen tension, decreased arterial carbon dioxide tension, and respiratory alkalosis in the absence of cardiac or pulmonary disease that stimulates a compensatory hyperpnea. A-72-year-old man with recurrent central nervous system lymphoma presented with hyperpnea. showing a respiratory rate over 30 per minute. He was fully awake and conscious. Routine laboratory studies and chest X-ray were normal, but arterial blood gas examination on room air showed respiratory alkalosis, regardless of wakefulness or sleep. pulmonary infarction was denied by pulmonary flow scintigram. Rebreathing from a paper bag, intravenous administration of diazepam, and oxygen inhalation failed to alter the respiratory pattern. brain MRI demonstrated two mildly enhanced lesions within the left side of the medulla oblongata and right side of the pons. CNH is rare in patients with normal consciousness. It seems to be caused by brainstem injury that includes the respiratory center.- - - - - - - - - - ranking = 0.037692564639496keywords = chest (Clic here for more details about this article) |
5/13. Respiratory feedback for treating panic disorder.panic disorder patients often complain of shortness of breath or other respiratory complaints, which has been used as evidence for both hyperventilation and false suffocation alarm theories of panic. Training patients to change their breathing patterns is a common intervention, but breathing rarely has been measured objectively in assessing the patient or monitoring therapy results. We report a new breathing training method that makes use of respiratory biofeedback to teach individuals to modify four respiratory characteristics: increased ventilation (respiratory rate x tidal volume), breath-to-breath irregularity in rate and depth, and chest breathing. As illustrated by a composite case, feedback of respiratory rate and end-tidal pCO2 can facilitate voluntary control of respiration and reduce symptoms. Respiratory monitoring may provide relevant diagnostic, prognostic, and outcome information.- - - - - - - - - - ranking = 0.037692564639496keywords = chest (Clic here for more details about this article) |
6/13. Pulmonary hyperinflation and respiratory distress following solvent aspiration in a patient with asthma: expectoration of bronchial casts and clinical improvement with high-frequency chest wall oscillation.An 18-year-old student with a history of asthma accidentally inhaled organic solvent during a class, with immediate cough and dyspnea that worsened over several hours. He presented in severe respiratory distress, with hypoxemia and marked pulmonary hyperinflation. Administration of inhaled bronchodilator was ineffective because of agitation, and the patient could not be positioned for chest physiotherapy to treat presumed widespread mucus plugging. High-frequency chest wall oscillation (HFCWO) in the sitting position initially caused increased distress but was subsequently tolerated when noninvasive positive-pressure ventilation (NPPV) via nasal mask was initiated. Almost immediately, the patient began expectorating bronchial mucus casts, with concomitant clinical improvement. Endotracheal intubation was avoided, and with aggressive pharmacologic treatment for acute severe asthma and continuation of intermittent HFCWO-NPPV, the patient made a full recovery over the next several days. This case suggests that the combination of HFCWO and NPPV may be helpful in the presence of mucus plugging as a complication of acute inhalation injury or acute severe asthma.- - - - - - - - - - ranking = 0.22615538783698keywords = chest (Clic here for more details about this article) |
7/13. Left ventricular apical ballooning.Transient left ventricular apical ballooning is an acute cardiac syndrome characterised by an abrupt onset of chest pain and is usually associated with anterior electrocardiographic changes. The observed apical ballooning of the left ventricle is usually reversible and develops in the absence of significant atherosclerotic coronary artery disease. Here we present (to our knowledge) the first case of this syndrome in a negroid patient.- - - - - - - - - - ranking = 1keywords = chest pain, chest (Clic here for more details about this article) |
8/13. Behavioral treatment of angina-like chest pain in patients with hyperventilation syndrome.The hyperventilation syndrome is present in as many as 50% of patients with non-cardiac chest pain. This study evaluated a behavioral treatment of this disorder in three adult females. They had long histories of chest pain and were documented to be free of coronary artery disease. Each subject met the DSM-III-R diagnostic criteria for an anxiety disorder. Following treatment, all subjects showed a marked decrease in the frequency and intensity of chest pain episodes and in the frequency of shortness of breath episodes. Two subjects maintained their progress at one-year follow-up. The results lend support to the efficacy of controlled breathing and relaxation training for the treatment of hyperventilation-related chest pain and to the inclusion of a hyperventilation provocation test in the diagnosis of the syndrome as well as its role in changing cognitions regarding cardiac status. Also discussed is the rationale for treating hyperventilation related chest pain in a medical care setting.- - - - - - - - - - ranking = 9keywords = chest pain, chest (Clic here for more details about this article) |
9/13. Possible role of coronary spasm in acute myocardial infarction precipitated by hyperventilation.Acute myocardial infarction was precipitated by hyperventilation in a 65 year old man. His coronary arteriogram in the chronic phase showed almost normal coronary arteries. Injection of acetylcholine (50 micrograms) into the left coronary artery induced spasm of the circumflex artery with chest pain in association with ST-segment elevation in the inferior leads and ST-segment depression in the precordial leads. In this patient there may have been atherosclerosis of the coronary arteries with absent or dysfunctional endothelium, despite an almost normal angiographic appearance. In the absence of endothelium the response of the smooth muscle to acetylcholine is constriction.- - - - - - - - - - ranking = 1keywords = chest pain, chest (Clic here for more details about this article) |
10/13. hyperventilation and myocardial infarction.chest pain that is associated with hyperventilation is often considered to be benign and noncardiac in nature. While not commonly recognized, hyperventilation can provoke coronary vasospasm. We report a man who presented with hyperventilation and developed myocardial infarction. In the setting of hyperventilation, chest pain and ST segment elevation, coronary vasospasm must be considered.- - - - - - - - - - ranking = 1keywords = chest pain, chest (Clic here for more details about this article) |
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