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Biomedical subjects

U Doshi

Publications and source records attributed to U Doshi.

5 recordsLinked to original sources
PubMed1983

Low cerebral perfusion pressure: an indicator of poor prognosis in asphyxiated term infants.

To establish the value of monitoring cerebral perfusion pressure (CPP) as an index for outcome in acutely ill neonates, blood pressure and intracranial pressure (ICP) were monitored in 44 sick newborn infants. ICP was measured via the fontanel using a noninvasive technique. The results indicate that CPP was similar in preterm hyaline membrane disease infants with intracranial bleed and in those without bleed. In term asphyxiated infants, CPP correlated with outcome; 86% of those with low CPP either died or developed cerebral palsy and 75% of those with normal CPP were neurologically normal. We feel that low CPP in asphyxiated term infants must be viewed with concern.

Asphyxia Neonatorum↗
PubMed1981

Neonatal abdominal aortic thrombosis.

Thromboembolism of abdominal aorta and its branches after umbilical artery catheterization has been previously reported. In the past, total occlusion of the abdominal aorta and its major branches was associated with high mortality. Successful aortic thrombectomy in the neonatal period has been reported only once in English literature. The successful management of 2 infants described here shows the need for early diagnosis and aggressive approach, including surgical thrombectomy when indicated. Thromboembolism of abdominal aorta and iliac arteries can be diagnosed by noninvasive methods, such as 2-dimensional echoaortography and Doppler blood flow measurement.

Aorta, Abdominal↗
PubMedDate not supplied

Scanning the pressure-induced distortion of fingerprints.

Fingerprint recognition technology is an important part of criminal investigations it is the basis of some security systems and an important tool of government operations such as the Immigration and Naturalization Services, registration procedures in the Armed Forces, and so forth. After the tragic events of September 11, 2001, the importance of reliable fingerprint recognition technology became even more obvious. In the current study, pressure-induced changes of distances between ridges of a fingerprint were measured. Using calibrated silicon pressure sensors we scanned the distribution of pressure across a finger pixel by pixel, and also generated maps of an average pressure distribution during fingerprinting. Emulating the fingerprinting procedure employed with widely used optical scanners, we found that on average the distance between ridges decreases by about 20% when a finger is positioned on a scanner. Controlled loading of a finger demonstrated that it is impossible to reproduce the same distribution of pressure across a given finger during repeated fingerprinting procedures.

Dermatoglyphics↗