![]() ![]() Venous or arterial blood may be used for testing. The most common technology available in hospital laboratories for analyzing the blood is the multiple wavelength spectrophotometer, also known as a CO-oximeter.If the patient has been breathing normal room air for several hours, COHgb testing may be less useful. It is important to know how much time has elapsed since the patient has left the toxic environment, because that will impact the COHgb level.COHgb levels can be tested either in whole blood or pulse oximeter.The key to confirming the diagnosis is measuring the patient’s carboxyhemoglobin (COHgb) level.All women of childbearing age who are suspected of having CO poisoning should have a pregnancy test.Neurological exam should include an assessment of cognitive function such as a Mini-Mental Status Exam.Patients should be examined for other conditions, including smoke inhalation, trauma, medical illness, or intoxication. Diagnosis is based on a suggestive history and physical findings coupled with confirmatory testing.People with chronic heart disease, anemia or respiratory illness. ![]()
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