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Mirza S Nanda NC Baweja G Misra V Pacifico A 《Echocardiography (Mount Kisco, N.Y.)》2004,21(2):199-202
Right coronary artery to coronary sinus fistula is a rare anomaly. We present a unique case of an adult patient with multiple fistulae from the right coronary artery draining into the coronary sinus near the posterior left atrium-left ventricle junction, first suspected by transthoracic two-dimensional echocardiography. The multiple openings were not seen by any invasive or noninvasive techniques and were noted only at the time of surgery. To our knowledge, this is the first case of multiple fistulae connecting the right coronary artery to the coronary sinus that has been reported in the English literature. 相似文献
54.
Two-dimensional echocardiography and Doppler color flow mapping in the diagnosis and prognosis of ventricular septal rupture 总被引:1,自引:0,他引:1
F Helmcke E F Mahan N C Nanda S P Jain B Soto J K Kirklin A D Pacifico 《Circulation》1990,81(6):1775-1783
Doppler color flow mapping in conjunction with two-dimensional echocardiography was used to evaluate ventricular septal rupture after myocardial infarction (seven anterior and eight inferior) in 15 patients and to correlate these findings with cardiac catheterization and surgical or autopsy data. Ventricular septal rupture was diagnosed by turbulent flow traversing the ventricular septum. The direction and velocity of shunt flow was determined by color M-mode and conventional Doppler methods. In all patients, Doppler color flow mapping correctly defined the site of septal rupture, which occurred at areas of discordant septal wall motion or "hinge points" (six posterior inlet, three anterior inlet, and six apical trabecular septum). Each of three patients with moderate tricuspid regurgitation and three of four patients with right-to-left shunting during diastole died, and all had an elevated right ventricular end-diastolic pressure. Right ventricular wall motion index was significantly higher in the patients who died compared with those who survived (mean +/- SEM; 2.8 +/- 0.2 vs. 2.0 +/- 0.2, p = 0.012), but there was no difference in left ventricular wall motion index. The rupture size measured by Doppler color flow imaging (1.7 +/- 0.1 cm) correlated with the size determined during surgery or autopsy (1.8 +/- 0.2 cm, r = 0.68, p = 0.022) and the pulmonic-to-systemic shunt flow ratio by cardiac catheterization (2.4:1 +/- 0.3, r = 0.74, p = 0.004). Color-guided continuous-wave Doppler estimates of right ventricular systolic pressure (47 +/- 2 mm Hg) correlated with cardiac catheterization measurements (48 +/- 3 mm Hg, r = 0.90, p = 0.0002).(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
55.
Hage FG Karakus G Luke WD Suwanjutah T Burri MV Nanda NC Aqel RA 《Echocardiography (Mount Kisco, N.Y.)》2008,25(7):784-789
Alcohol-induced septal ablation (AISA) is an accepted treatment for hypertrophic cardiomyopathy (HCM) patients with left ventricular (LV) outflow obstruction who are unresponsive to medical therapy. As left atrial (LA) enlargement has been correlated with increased morbidity and mortality in HCM, we assessed LA volumes and ejection fraction (EF) prior to and after AISA using real time three-dimensional (3D) transthoracic echocardiography (TTE) in 12 patients (9 women; mean age 52 ± 15 years; 11 Caucasian). All patients underwent successful AISA with no complications and their resting left ventricular outflow gradients decreased from 40.5 ± 22.2 to 9.1 ± 17.6 mmHg (P < 0.001) while their gradients with provocation decreased from 126.2 ± 31.7 to 21.8 ± 28.0 mmHg (P < 0.001). All patients showed improvements in their New York Heart Association (NYHA) functional class. Both the LA end-systolic (45.2 ± 12.9 to 37.2 ± 13.7 ml, P < 0.0001) and end-diastolic (79.6 ± 18.9 to 77.1 ± 18.6 ml, P = 0.001) volumes decreased after AISA. The LA EF increased from 43.1 ± 9.0 to 52.5 ± 8.8% (P = 0.001). The increase in LA EF correlated with the decrease in the resting left ventricular outflow gradient (R =−0.647, P = 0.03). In conclusion, 3D echocardiography can be utilized to follow LA function after AISA for HCM. AISA results in clinical improvement in patients with HCM and in improvement of LA EF that is correlated with the decrease in the left ventricular outflow gradient. 相似文献
56.
Kaikai Guo Zichao Bian Siyuan Dong Pariksheet Nanda Ying Min Wang Guoan Zheng 《Biomedical optics express》2015,6(2):574-579
Illumination engineering is critical for obtaining high-resolution, high-quality images in microscope settings. In a typical microscope, the condenser lens provides sample illumination that is uniform and free from glare. The associated condenser diaphragm can be manually adjusted to obtain the optimal illumination numerical aperture. In this paper, we report a programmable condenser lens for active illumination control. In our prototype setup, we used a $15 liquid crystal display as a transparent spatial light modulator and placed it at the back focal plane of the condenser lens. By setting different binary patterns on the display, we can actively control the illumination and the spatial coherence of the microscope platform. We demonstrated the use of such a simple scheme for multimodal imaging, including bright-field microscopy, darkfield microscopy, phase-contrast microscopy, polarization microscopy, 3D tomographic imaging, and super-resolution Fourier ptychographic imaging. The reported illumination engineering scheme is cost-effective and compatible with most existing platforms. It enables a turnkey solution with high flexibility for researchers in various communities. From the engineering point-of-view, the reported illumination scheme may also provide new insights for the development of multimodal microscopy and Fourier ptychographic imaging.OCIS codes: (170.2945) Illumination design, (170.0180) Microscopy, (170.3010) Image reconstruction techniques, (100.3190) Inverse problems 相似文献
57.
Wael El-Matary Stephen L. Guthery Achiya Z. Amir Matthew DiGuglielmo Laura G. Draijer Katryn N. Furuya Nitika Gupta Jessica T. Hochberg Simon Horslen Nanda Kerkar Bart G.P. Koot Trevor J. Laborda Kathleen M. Loomes Cara Mack Mercedes Martinez Alexander Miethke Tamir Miloh Douglas Mogul Mark R. Deneau 《Clinical gastroenterology and hepatology》2021,19(5):1067-1070.e2
58.
Nekkanti R Nanda NC Ahmed S Chen JG McGiffin DC 《Echocardiography (Mount Kisco, N.Y.)》2003,20(6):569-571
We describe an adult patient with type I aortic dissection in whom it was feasible to demonstrate the extension of the dissection into the innominate artery using color Doppler three-dimensional transesophageal echocardiography. 相似文献
59.
Sunanda Sharma Aditi Nanda Dheeraj Koli Sapna Daksh Mahesh Verma 《Indian Journal of Palliative Care》2014,20(2):146-152
Injury of the head and neck region can result in substantial morbidity. Comprehensive management of such patients requires team work of several specialties, including dentists. A young female patient with extensive loss of cranium and associated pathological chewing was referred to the dental department. The lost cranium was replaced by a custom-made, hand-fabricated cranioplast. Trauma due to pathological mastication was reduced by usage of a custom-made mouthguard. Favorable results were seen in the appearance of the patient and after insertion of the mouthguard as evidenced in good healing response. The intricate role of a dental specialist in the team to manage a patient with post traumatic head injury has been highlighted. The take away message is to make the surgical fraternity aware of the scope of dentistry in the comprehensive management of patients requiring special care. 相似文献
60.