Biomedical subjects

H Uppal

Publications and source records attributed to H Uppal.

4 recordsLinked to original sources

PubMed2006

Case of the month: Dislodged tracheo-oesophageal valve: importance of rapid replacement or stenting.

Dislodgement of a tracheo-oesophageal prosthesis needs prompt action to ensure patency and prevent aspiration in patients with total laryngectomy. Failure to do so may lead to an unnecessary repeat tracheo-oesophageal puncture. This case report is about a patient who needed a repeat procedure under general anaesthetic. It highlights the need for emergency physicians to be aware of this not uncommon event in a patient with a laryngectomy and to refer them immediately for ENT review.

Aged↗

PubMed2004

Influence of corneal asymmetry on the phakometric measurement of ocular surface alignment.

Phakometric measurements of corneal and crystalline lens surface alignment are influenced by corneal asymmetry in which the corneal apex does not coincide with the limbal centre. The purpose of this study was to determine the horizontal separation (e) between these corneal landmarks. Measurements were made in 60 normal eyes (30 subjects) using the Orbscan IIz corneal analysis workstation. Our results show that both corneal landmarks typically coincide, so that e = 0, but that inter-subject variations of about +/-1 mm can be expected (so that the corneal apex may fall nasal or temporal to the visual axis). This suggests that no correction for corneal asymmetry is required when estimating average amounts of ocular alignment from samples of eyes but that the measurement of e is strongly recommended for measurements in individual eyes.

Adult↗

PubMed1998

The EEG changes during cardiac arrest: a case report.

This case report of a patient with an irreversible cardiac arrest shows that the amplitude of the EEG, rather than its duration, when it becomes discontinuous, has a closer relationship with a diminished heart rate to a final arrest. These data may be helpful in determining the extent of cerebral demise of patients with a deteriorating cardiac function.

Brain Death↗

PubMed1998

TRI-PLEDs: a case report.

This case report shows an example of TRI-PLEDs, periodic discharges occurring independently on 3 different areas. The phenomenon of the PLED is briefly discussed.

Aged↗