Biomedical subjects

C B Yucha

Publications and source records attributed to C B Yucha.

23 records · Page 2Linked to original sources

PubMedDate not supplied

Effect of elevation on intravenous extravasations.

Nursing interventions used to treat intravenous extravasations (infiltrations) generally include application of warmth or cold, elevation, and no treatment. In this article, the effect of elevation on infiltrations of 0.45% sodium chloride and 3% saline made intentionally into healthy volunteers is reported. Elevation had no effect on pain, surface area of induration, or volume of infiltrate remaining as quantified by magnetic resonance imaging. A comparison of these data with previously published findings concerning the effect of warmth versus cold on infiltrations shows that no one treatment is better overall in decreasing the symptoms or speeding re-absorption of the infiltrate.

Cryotherapy↗

PubMedDate not supplied

Differences among intravenous extravasations using four common solutions.

A frequent complication of intravenous therapy is extravasation (infiltration) of the infused fluid into the interstitial tissues. This study compares infiltrates intentionally made using different IV solutions regarding surface assessment and the volume of infiltrate as quantified by magnetic resonance imaging. Solutions differed significantly concerning pain, surface area of induration, and volume at the site of infiltration.

Adolescent↗

PubMedDate not supplied

The minimum discard volume: accurate analysis of peripheral hematocrit.

The purpose of this research is to quantify the minimum amount of blood that must be discarded from an indwelling peripheral intravenous catheter (deadspace 0.5 ml) to obtain an accurate hematocrit reading. Repeat blood sampling from nine subjects is used to develop a mathematical model (Michaelis-Menten curve) describing the mixing of the flush solution and the blood. This model is used to estimate the hematocrit when different volumes are discarded. Differences between the computed hematocrit and true hematocrit were determined for each subject. When 1.5 ml (three times the deadspace volume) is discarded, the 95% confidence interval is within 0.6% of the true hematocrit.

Adult↗

PubMedDate not supplied

Detecting i.v. infiltrations using a Venoscope.

This research evaluates the Venoscope for its ability to detect infiltrations when present (sensitivity) and to detect the absence of infiltrations when not present (specificity), and compares these findings with those obtained via ultrasonography. Health adult volunteers were randomly assigned to receive or not receive an intentionally made 5-ml normal-saline infiltration. The Venoscope had a sensitivity of .92-.93 and a specificity of .89-1.0. Ultrasound had a sensitivity of .92-.93 and a specificity of .22-.25. The Venoscope, which is simple and easy to use, is a valid indicator of the presence and absence of i.v. infiltrations.

Adolescent↗

PubMedDate not supplied

Acute renal failure. Recognition and prevention.

Acute renal failure remains a devastating syndrome associated with a high mortality rate. Accurate and rapid etiologic diagnosis is critical, since it may be possible to stop the injurious process and prevent further progression of renal insufficiency. To do this, one must understand and differentiate among the three broad categories of disorders that can cause acute renal failure-prerenal, postrenal, and intrarenal processes. This article compares and contrasts these three categories in regard to causes and predisposing factors, history and physical examination, urinalysis, and urine chemistries. Treatment focuses on correcting prerenal and postrenal factors; treating acute complications, such as hyperkalemia, hyponatremia, acidosis, and pulmonary edema; optimizing cardiac output and renal blood flow; and adjusting doses of drugs consistent with renal failure.

Acute Kidney Injury↗