Approximations of cost were attempted only by two thirds of user-respondents and were generally well below our estimated actual cost.

Complications noted over the past year were few, although more commonly seen in teaching hospital ICUs. This may be related to the larger numbers inserted in these units, although the overall complication rate of approximately 0.5 percent is far lower than the 3.9 to 7.2 percent reported by large studies from the United States, where greater expertise in insertion and management is likely. This implies nonrecognition of problems such as sepsis (1.7 percent), pulmonary infarction (1.7 percent), and thrombosis (2.6 percent) reported by Elliot et al.

To maintain brevity, the questionnaire did not inquire into the use of derived parameters such as systemic vascular resistance and oxygen delivery/ consumption. Views on clinical indications for insertion or its timing were also not queried, although it does not appear to be a prophylactic measure more my canadian pharmacy phone number. In those hospitals possessing both equipment and expertise, use is generally according to clinical need, although definition of clinical need appears highly variable if the assumption is made that each type of hospital (eg, large district general, secondary referral) has an approximately similar number of acutely ill patients who may be considered suitable cases.
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