Cases reported "Carbon Monoxide Poisoning"

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1/22. Delayed transient loss of consciousness in acute carbon monoxide intoxication.

    In acute carbon monoxide intoxication the presence of altered consciousness, ranging from transient loss of consciousness to coma, represents a poor prognostic factor and modifies the approach to therapy. Transient loss of consciousness is, as a rule, contemporaneous to the exposure, generally occurring at the scene of the intoxication. We report an unusual case of delayed transient loss of consciousness, occurring in the absence of any other evident aetiology, in one member of an orchestra composed of 110 members after a mass carbon monoxide poisoning.
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2/22. Recognition of chronic carbon monoxide poisoning.

    Chronic exposure to low levels of carbon monoxide can cause vague symptoms that are easily mistaken for other common illnesses. During the past 5 years, three families have contacted the wisconsin Division of public health to report illnesses that may have been caused by chronic exposure to carbon monoxide. Members of these families were diagnosed with a variety of conditions including chronic fatigue syndrome, depression and influenza. Carbon monoxide exposure was not suspected as a cause of these illnesses until heating contractors discovered that gas appliances in these families' homes were not properly vented. These cases serve as reminders that carbon monoxide exposure should be considered in the differential diagnosis of patients who present with chronic symptoms of headache, fatigue, dizziness, nausea and mental confusion--especially when these symptoms onset during the winter heating season.
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ranking = 21.204539542144
keywords = headache
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3/22. Extracorporeal support in an adult with severe carbon monoxide poisoning and shock following smoke inhalation: a case report.

    The objective of this study was to discuss the case of a patient with severe smoke inhalation-related respiratory failure treated with extracorporeal support. The study was set in a 12-bed multi-trauma intensive care unit at a level one trauma center and hyperbaric medicine center. The patient under investigation had carbon monoxide poisoning, and developed acute respiratory distress syndrome and cardiovascular collapse following smoke inhalation. Rapid initiation of extracorporeal support, extreme inverse-ratio ventilation and intermittent prone positioning therapy were carried out. Admission and serial carboxyhemoglobin levels, blood gases, and computerized tomography of the chest were obtained. The patient developed severe hypoxia and progressed to cardiovascular collapse resistant to resuscitation and vasoactive infusions. Veno-venous extracorporeal support was initiated. Cardiovascular parameters of blood pressure, cardiac output, and oxygen delivery were maximized; oxygenation and ventilation were supported via the extracorporeal circuit. Airway pressure release ventilation and intermittent prone positioning therapy were instituted. Following 7 days of extracorporeal support, the patient was decannulated and subsequently discharged to a transitional care facility,neurologically intact. smoke inhalation and carbon monoxide poisoning may lead to life-threatening hypoxemia associated with resultant cardiovascular instability. When oxygenation and ventilation cannot be achieved via maximal ventilatory management, extracorporeal support may prevent death if initiated rapidly.
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4/22. Management of the moribund carbon monoxide victim.

    Carbon monoxide (CO) poisoning is the commonest single cause of fatal poisoning in the U.K. (Broome & Pearson, 1988). The clinical features are numerous and include headache, fatigue, dizziness, confusion, memory loss, paraesthesia, chest pain, abdominal pain, nausea, and diarrhoea as well as coma, convulsions and death. Without adequate treatment many patients develop neuropsychiatric sequelae including headaches, irritability, memory loss, confusion and personality changes. The diagnosis of CO poisoning is often suggested only by circumstances surrounding the victim, and remains a challenge to the A&E department. Hyperbaric oxygen therapy (HBO) is internationally accepted as the most powerful form of treatment in severe cases (Drug & therapeutics Bulletin, 1988; Lowe-Ponsford & Henry, 1989). However, in the U.K. treatment with HBO is often not considered due to lack of hyperbaric facilities (Meredith & Vale, 1988; Anand et al., 1988), and due to inadequate awareness on the part of hospital staff. We report a case of a patient deeply unconscious as a result of CO poisoning, in which serial treatments with HBO over a period of 14 days, produced dramatic results.
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ranking = 43.409079084287
keywords = headache, chest
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5/22. Partial recovery from cortical blindness following carbon monoxide intoxication.

    patients with carbon monoxide (CO) intoxication may show neurological signs such as headache, seizures, extrapyramidal findings, and coma. However, cortical blindness is rare in these cases. This study describes a woman exhibiting confusion and axial rigidity after CO intoxication. Ten days after intoxication, her pupils were isonormocoric and reactive to light. A fundoscopic examination was normal, but visual acuity was light-perception in both eyes. There were diffuse EEG slow waves. magnetic resonance imaging (MRI) demonstrated bilateral hyperintensity in the basal ganglia. The P100 latencies of visual evoked potentials (VEP) were increased and dispersed. One year later, the patient's visual acuity was almost normal and VEPs showed mild dispersion in P100 latencies. The authors found this case of interest because cortical blindness due to CO intoxication is only rarely seen with a relatively good outcome.
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ranking = 21.204539542144
keywords = headache
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6/22. carbon monoxide poisoning: a case report of reversible cardiormyopathy.

    Acute carbon monoxide poisoning is the most common cause of poison-related deaths in the U.S. A 21-year-old white woman was referred to Ruby Memorial Hospital after exposure to carbon monoxide (CO) from a faulty furnace. She developed acute weakness, dyspnea, nausea and vomiting. An electrocardiogram revealed sinus tachycardia, non-specific ST-T wave abnormalities, and a prolonged QTc interval. The chest X-ray revealed pulmonary edema and the 2-D echocardiography revealed decreased left ventricular systolic function with an ejection fraction of 25%. She was treated with high-flow oxygen and supportive medical therapy with complete resolution of the left ventricular dysfunction six weeks later. She has been followed for over one year without medical therapy and without recurrence of her symptoms. This case illustrates that the depressant effect of CO poisoning on the myocardium can be reversed in the short term with supportive medical therapy and recovery sustained in the long term without medical therapy.
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7/22. Tension pneumothorax associated with hyperbaric oxygen therapy.

    The authors present three patients who developed a tension pneumothorax while receiving emergent hyperbaric oxygen therapy for acute carbon monoxide poisoning. Each patient was intubated and received closed chest compressions for cardiac arrest prior to hyperbaric oxygenation. Despite the apparent absence of pneumothorax prior to hyperbaric therapy, tension pneumothorax was detected soon after decompression. These cases illustrate the need for vigilance in detecting and addressing pneumothorax prior to hyperbaric decompression in obtunded patients. Serial physical examinations, arterial blood gas determinations, properly positioned chest radiographs, and a high index of suspicion for pneumothorax in the setting of emergent hyperbaric therapy are recommended.
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8/22. carbon monoxide poisoning: the rest of the story.

    There is more to the story of CO poisoning than anemic hypoxia and more to its treatment than breathing 100% oxygen. For moderate to severe poisoning, hyperbaric oxygen therapy is the treatment of choice. Hyperbaric oxygen can bypass bound hemoglobin and can oxygenate tissues by dissolving oxygen in plasma. In addition, HBO appears to retard encephalopathic sequelae. Recent studies have indicated that the mechanism for that is prevention of the rise of brain lipid peroxides in CO victims. HBO therapy also drastically reduces the time it takes to eliminate CO by respirations.
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ranking = 170.00795005203
keywords = breathing
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9/22. A case of transient choreoathetosis with amnesic syndrome after acute monoxide poisoning.

    We report a case of acute CO poisoning, followed after 9 days by the onset of choreoathetosis in the upper limbs and face, in a 24 year old man. The patient also showed memory disturbances that tended to clear gradually within about six months. CT scan and NMR revealed symmetrical bilateral lesions in the globus pallidus.
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ranking = 0.29020811654527
keywords = upper
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10/22. Myonecrosis in carbon monoxide poisoning.

    Myonecrosis is an unusual sequelae to carbon monoxide poisoning with only 16 cases having been reported in the English-language literature. At the University of illinois Hospital, we encountered a 25-year-old fire academy student who presented to our Emergency Department with a carboxyhemoglobin level of 16% following a training exercise in a smoke-filled room. The patient was not wearing a self-contained breathing apparatus and his duration of exposure was 7-8 min, by which time he had blacked out for about 1 min. Upon arrival, the patient was lethargic, with a moderate inhalation burn. The patient was treated with hyperbaric oxygen at 2 1/2 ATA. Following 90 min of hyperbaric oxygen, slight flexor compartment weakness, along with tenderness of the proximal lower extremities was noted. CPK was elevated to 65,998 (100% mm) with urine dipstick being positive for blood and only occasional rbc's seen in the urine sediment. The patient did well with forced diuresis and alkalinization of the urine. No oliguria was noted and the CPK fell to 893 five days later. This is the only case in the English-language literature who developed myonecrosis from carbon monoxide, despite hyperbaric oxygen treatment. We believe that this case demonstrates that hyperbaric oxygen cannot prevent the development of myonecrosis induced by carbon monoxide.
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ranking = 170.00795005203
keywords = breathing
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