Figure 3.

Utilization of emergency services and procedures. (A) Total episodes of being ambulanced to hospitals. Twenty-five out of 63 (39.7%) respondents reported having used an ambulance at least once in the pre-diagnosis period and 22 (34.9%) respondents in the post diagnosis period. It is noteworthy that 2 out of 7 (28.6%) respondents in the "no attack" group reported having used an ambulance for HAE attacks both in the pre-diagnosed and diagnosed period. (B) Total episodes of receiving a tracheotomy. Two out of 63 (3.2%) respondents reported experience of a tracheotomy in the pre-diagnosed period, and this increased to 4 (6.3%) in the post-diagnosed period, with this concentrated in the low attack group (n = 3/29, 10.3%). (C) Total frequency of ever receiving a laparotomy. Seven out of 63 (11.1%) respondents reported "one experience" of a laparotomy, one (1.6%) respondent reported "twice" and one (1.6%) respondent reported "3 times or more" in the pre-diagnosed period. The incidence of this surgery was higher in the high attack group, with 5 out of 19 (26.3%) respondents reporting at least once incidence. After diagnosis, only 2 out of 63 (3.2%) respondents report experience of a laparotomy. Abbreviation: HAE, Hereditary angioedema.