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Biomedical subjects

T Yorozu

Publications and source records attributed to T Yorozu.

22 records · Page 2Linked to original sources
PubMed1989

[Anesthetic management of a patient with Conradi's syndrome (chondrodysplasia punctata)--a case report].

Conradi's syndrome is a rare hereditary disease characterized by punctate epiphyseal calcifications. The symptoms include short stature, typical facies with hypertelorism, saddle nose, short neck, tracheal stenosis and scoliosis. The deformities of airway and thoracic cage are expected to bring about ventilatory failure during anesthesia and operation. Although there has been a brief report of a death of a child with this syndrome during induction of anesthesia, we cannot find any other report concerning the perioperative respiratory management. This is a report on a girl with Conradi's disease who developed respiratory problems due possibly to gastric aspiration during ophthalmic surgery under general anesthesia. Several anesthetic problems raised by this case are discussed.

Anesthesia, General↗
PubMed1981

Esophageal echocardiographic left ventricular anterolateral wall motion in normal subjects and patients with coronary artery disease.

Esophageal echocardiography was developed for recording left ventricular anterolateral wall (LVAW) echocardiograms and was applied clinically to 14 normal subjects and 21 patients with coronary artery disease. LVAW echocardiograms were obtained satisfactorily in 11 of 14 normal subjects (75%) and 20 of 21 patients (95%) with coronary artery disease. LVAW echocardiograms were obtained by conventional anterior echocardiography in eight of 21 patients (38%) with coronary artery disease. In 11 normal subjects, mm/sec (mean 34.3 +/- 5.2 mm/sec); and diastolic wall thickness ranged from 9-12.5 mm (mean 11.2 +/- 0.7 mm). In 20 patients with coronary artery disease, LVAW motion obtained by esophageal echocardiography was classified into five groups according to the excursion, and the findings were in good agreement (80%) with those obtained by left ventriculography. Classification of LVAW motion by conventional echocardiography agreed with that of left ventriculography in only three of eight patients, although all eight patients had abnormal LVAW motion by the conventional method. In all patients except one, whose LVAW echocardiograms were obtained by conventional echocardiography, excursion was much less than that obtained by esophageal echocardiography. We conclude that the projection of an ultrasonic beam from the intraesophageal transducer is a better approach for accurate measurement of LVAW motion.

Adult↗
PubMed1980

Echocardiographic estimation of forward stroke volume and mitral regurgitant volume in patients with or without left ventricular dyssynergy.

In order to estimate forward stroke volume (FSV) and mitral regurgitant volume (MRV) by echocardiography, the relationship between FSV or the severity of mitral regurgitation (MR) determined by conventional methods and those measured by aortic-left atrial echogram was investigated in 119 subjects, consisting of 88 patients without MR (no-MR group) and 31 patients with MR (MR group). The most adequate echocardiographic measurement for estimating FSV in the no-MR group was the product of posterior aortic wall excursion (Ao-PWE) and left atrial dimension (LAD); i.e., Ao-PWE X LAD. Further sophistication in estimating FSV was achieved by separating the subjects with LAD smaller than or equal to 40 mm from those with LAD > 40 mm. MRV was estimated by subtracting the FSV determined directly by either Fick or thermodilution method from the stroke volume determined by echocardiography. MRV so obtained was compatible with the severity of MR determined by LV cineangiography. The FSV in the no-MR group and the MRV in the MR group could be estimated with reliable accuracy by echocardiography alone (in the former) and by echocardiography plus a simple procedure such as Fick or thermodilution method (in the latter). Furthermore, this method was found to be free of influence from left ventricular dyssynergy or aortic regurgitation.

Adolescent↗