Patient Characteristics
Individual informed consent was obtained from each patient, and
institutional review board approval was obtained from Xiamen University.
Patients with uncomplicated IMHBs were included
between January 2016 and January
2018. The definition of “uncomplicated” was based on the status of the
syndrome after medical treatment (without signs of aortic rupture on
admission and controllable syndrome) and radiographic findings from the
computed tomography angiography (CTA) examination on admission (without
periaortic hematoma and ulcer-like projection [ULP])[1][4]. The data
from the following were defined as missing: patients who refused further
treatment, patients with incomplete imaging data to assess the evolution
of IMHB or laboratory test results, and patients lost to follow-up (see
details of the CONSORT diagram in Figure 1 ).