{'fraction_non_alphanumeric': 0.009081735620585268, 'fraction_numerical': 0.004036326942482341, 'mean_word_length': 5.318471337579618, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Freezing of thiopentone solution

In the absence of having the opportunity to examine the catheter it is not possible for us to make any comments about this specific incident. It is clear that even the most robust manufacture is unlikely to be able to withstand the tensile stresses described in Dr Morton’s letter. The Hydrocath central venous catheter described in this incident was manufactured to a specification which exceeds the British Standard for tensile failure of 15 Newtons. These catheters were manufactured to a minimum specification of 20 Newtons for tensile failure. Subsequently, the production process has changed to enhance manufacturing flexibility and improve the functionality of the external lumena by introducing transparent tubing. The incident described by Dr Morton serves to illustrate the importance of careful management of intravenous lines, especially those placed in the central venous system where the danger of air embolus is a persistent potential hazard.