Difference in myocardial strain between obstructive hypertrophy cardiomyopathy and nonobstructive hypertrophy cardiomyopathy / 上海交通大学学报（医学版）

Objective · To investigate the difference in myocardial strain of left ventricle between obstructive hypertrophy cardiomyopathy (HCM) and nonobstructive HCM. Methods · Cardiac magnetic resonance imaging (MRI) exam was performed on 48 sequential enrolled patients with HCM (18 with obstructive HCM, and 30 with nonobstructive HCM), whose left ventricular ejection fractions (LVEF) were over 50%. Twenty-five healthy volunteers were examined as normal controls. Global longitudinal strain (GLS), global radial strain (GRS), global circumferentialstrain (GCS), LVEF, left ventricular end diastolic volume (LVEDV), left ventricularmass (LVM), left ventricular end diastolic volume index (LVEDVI), and left ventricular mass index (LVMI) were collected and compared. Radial strain, circumferential strain and peak radial displacement were also measured in medial segment of left ventricle according to American Heart Association (AHA) 17-segment model. Results · ① LVEF of the patients with obstructive HCM was bigger than those of nonobstructive HCM patients and control group (P<0.05). LVM and LVMI of the HCM groups were bigger than those of control group (P<0.01). ② Left ventricle GLS, GRS, and GCS significantly decreased in the patients with nonobstructive HCM compared to those with obstructive HCM (P<0.05). The three parameters of two HCM groups were significantly lower than those of healthy volunteers (P<0.05). ③ Compared with obstructive HCM patients,the segmental parameters of left ventricule, the medial segment circumferential strain and radial strain of nonobstructive HCM patients significantly decreased (P<0.05), and the two parameters of both HCM groups were lower than those in healthy volunteers. Compared with obstructive HCM patients and healthy volunteers, peak radial displacement of left ventricule medial segment in nonobstructive HCM witnessed a significant decrease, while no significant difference was observed between obstructive HCM patients and healthy volunteers. Conclusion · In the LVEF preserved HCM patients, the myocardial strain of left ventricle in nonobstructive HCM patients decrease significantly than that in obstructive HCM patients, which may result in the different clinical outcomes intwo types of HCM patients. It is suggested that the myocardial strain is more sensitive than ejection fraction in the evaluation of myocardial performance of HCM patients.

A Case of Ischemic Colitis in a Young Woman with Chronic Obstructive Type Constipation / 대한소화관운동학회지

Although ischemic colitis is often considered to be a condition occurred in elderly patients or in patients with vascular diseases, it also can occur in younger healthy persons. Some drugs, such as oral contraceptives, may play an important role in the development of ischemic colitis in young women. However, constipation also can play an important role in this condition. We recently experienced a case of reversible ischemic colitis of a young woman, who had been suffered from obstructive type of chronic constipation, after taking a laxative and enema. We report this case with literature review. Proper managements and educations in patients with chronic constipation should be emphasized.

Results of Pressure-Flow Studies in Adult Male Patients without Voiding Symptom / 대한비뇨기과학회지

PURPOSE: The pressure-flow study is only objective study that can determine the presence or absence of bladder outlet obstruction and impaired detrusor contractility. Although many results of pressure-flow study are reported in diseased state such as benign prostatic hyperplasia, but are rarely evaluated in adult male patients without voiding symptoms as control group. The purpose of this study was to evaluate the findings of pressure-flow study in asymptomatic male patients. MATERIALS AND METHODS: Twenty-three male patients without voiding symptom were recruited for this study. Mean age of these patients was 49.8 years(range 21-70). Mean AUA symptom score was 1.1(range 0-4) and mean prostatic volume was 27.3gm(range 20-35) on digital rectal examination. The study was done by using 7 Fr. urethral catheter on sitting or standing position. RESULTS: Mean values were followed; PdetQmax was 48.1cmH2O(range 25-94), Qmax was 15.7ml/sec(range 3-23), and postvoid residual urine was 14.5ml(range 0-80). According to the Abrams-Griffiths nomogram, 8 were unobstructed and 4 were obstructed, the remaining 11 falling in the equivocal zone. In each types, mean group specific urethral resistance factor (URA) was 12.8cmH2O in unobstructive type, 51.5 in obstructive type, and 22.1 in equivocal type. CONCLUSIONS: The results were maybe guessed as following; First, the values of defining obstrucion were set too low. Second, obstruction was less relevance in the development of symptoms than had been suggested previosly by some observers. Therefore, we thought that interpretations of pressure-flow finding were carefully considered to method of test, and/or uncomfortable voiding.