title: [Clinical and hemodynamic aspects of non-obstructive coronary lesions. A comparative retrospective study].
abstract: OBJECTIVE
  To study the clinical and hemodynamic aspects of a group of patient presenting non-obstructive coronary lesions.
  
  
  METHODS
  We reviewed 963 coronary angiographies performed at a same institution. The 52 patients presenting only stenosis < or = 50% after semi-quantitative measurement composed group I, which was compared with two other groups consisted of 52 patients each: one, with patients presenting univascular lesion > 50% (group II) and the other with normal coronary arteriographies (group III).
  
  
  RESULTS
  Mean age was similar in groups I and II (49.4 +/- 6.89 and 51.3 +/- 7.86, p > 0.05) and significantly higher than that of group III (44.8 +/- 6.81, p < 0.05). Risk factors did not discriminate group I (GI) from groups II (GII) and III (GIII). During a follow-up period of 63 months, the number of hospital admissions due to cardiac events and repetitions of coronary arteriography were similar in GI and GII, being significantly less frequent in GIII (p < 0.00001 and 0.001; p < 0.01 and 0.05, respectively). By the end of the follow-up period, though angina and heart failure functional classes had been similar in the three groups, patients in groups I and II were using more medications than those in group III (p < 0.0001 and 0.00001). Mean ejection fractions (%) were lower in GI and GII (67.04 +/- 10.13 and 68.90 +/- 11.32) than in GIII (74.69 +/- 6.40, p < 0.01). Lesions were predominantly proximal in GI when compared with GII (p < 0.05). Length, simmetry, ulceration, thrombus and proximal shoulder showed no difference between GI and GII.
  
  
  CONCLUSIONS
  Patients with non-obstructive coronary lesions were similar to those with univascular lesion > 50% regarding several aspects and were considerably different from those with normal coronary arteries.
authors.affiliation: Hospital Central da Polícia Militar do Rio de Janeiro e Hospital Universitário Pedro Ernesto-UERJ.
authors.forename: M B
authors.initials: MB
authors.lastname: Rachid
authors.forename: F M
authors.initials: FM
authors.lastname: Albanesi Filho
authors.forename: N D
authors.initials: ND
authors.lastname: de Mattos
authors.forename: A L
authors.initials: AL
authors.lastname: Tedeschi
authors.forename: N B
authors.initials: NB
authors.lastname: Aoun
authors.forename: A A
authors.initials: AA
authors.lastname: Potsch
authors.forename: I P
authors.initials: IP
authors.lastname: Borges
authors.forename: E E
authors.initials: EE
authors.lastname: Barroso
authors.forename: E C
authors.initials: EC
authors.lastname: Peixoto
mesh_terms: D002932:Cineangiography; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D003331:Coronary Vessels / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012307:Risk Factors; D013318:Stroke Volume; D016277:Ventricular Function, Left
vernacular_title: Aspectos clínicos e hemodinâmicos das lesões coronárias não-obstrutivas. Estudo retrospectivo comparativo.