Comparison of an early and normal weaning management system on cow and calf performance while grazing endophyte-infected tall fescue pastures.

A 3-yr study used 16 cows and their spring-born calves (yr 1) and 48 first-calf heifers (yr 2, n = 24; yr 3, n = 24) and their spring-born calves in a completely randomized design. All cows and heifers were Angus x Beefmaster, and calves were sired by Angus bulls. Cow-calf pairs were assigned randomly to one of two management systems: 1) an early-weaning system, in which steer and heifer calves were weaned at 108 d of age and fed a postweaning growing diet (EW), or 2) a normal weaning system, in which calves were weaned at 205 d without supplementation (NW). Before early weaning and within each management system, calves and their dams were maintained in two 1.4-ha, endophyte-infected tall fescue pastures for 35 d (yr 1) or 14 d (yr 2 and 3). Early-weaned calves and cow-calf pairs were then randomly allotted to 1.4-ha, endophyte-infected tall fescue pastures with two (yr 1) or three (yr 2 and 3) calves or cow-calf pairs per pasture (four pastures per management system). Cow weights and BCS changes and calf gains were measured from early to normal weaning. Dietary intakes and nutrient digestibilities by EW and NW calves were determined during two periods of yr 1 and three periods of yr 2 and 3. Total gains and BCS changes were greater (P < 0.01) for cows that produced EW calves in all years. Calf ADG from early to normal weaning did not differ (P = 0.32). Similar to ADG, BW of calves at normal weaning were not different (P = 0.11). Forage intake was greater (P < 0.01) by NW calves during Periods 2 and 3 of yr 1 and Periods 1 and 2 of yr 2 and 3; however, total DM and CP intakes were greater (P < 0.01) for EW calves in Periods 2 and 3 of each year. Intakes of NDF tended (P = 0.11) to be greater by EW calves across all years. Estimates of CP and NDF digestibilities were higher (P < 0.01) for EW calves during yr 1 and 2; however, all components of the diet consumed by NW calves in yr 3 were more digestible (P < 0.05) than those consumed by EW calves. These results show the condition of cows with EW calves was improved by early weaning and gains by calves weaned at 108 d to pasture plus a commercial grower diet were comparable to those by calves continuing to nurse dams until weaned at 205 d.

A data-driven approach to improving clinical outcomes in cardiac care.

The performance improvement department at The Queen's Medical Center (QMC) in Honolulu, has been monitoring the outcomes of cardiovascular interventional procedures and cardiothoracic surgical procedures. By using an institution-wide database as well as participating in national cardiac databases, a set of clinical indicators is tracked, and quarterly reports are provided to the cardiovascular medicine (CV) and thoracic and cardiovascular surgery (TCV) services. After reviewing the data, a combined CV/TCV/anesthesia morbidity and mortality committee meets monthly to further evaluate the data, review cases, and formulate action plans based upon the findings. Using these tools and methods, we have seen a marked improvement in clinical outcomes among cardiac patients.

Privacy or help? The use of curtain positioning strategies within the maternity ward environment as a means of achieving and maintaining privacy, or as a form of signalling to peers and professionals in an attempt to seek information or support.

Midwives in the local maternity unit had noted that the interactions between women within the ward environment had started to decline. Women were spending long periods of time behind curtains drawn around their bed space. The staff hypothesized that this was because women desired the privacy of a single room. The literature review revealed a lack of understanding of the concept of privacy within a ward environment from a nursing or midwifery perspective. The review therefore, concentrated on the information offered by the fields of psychology and sociology. This study aimed to observe the methods women use to maintain or preserve their privacy within the ward environment. An ethnographic approach was used incorporating use of documentary evidence, participant observation and discussion, field maps and field notes. The findings of this study centred around the use of curtain positioning, subsequently referred to as 'signalling'. The strategies employed by women included complete closure for total withdrawal, semi-closure for seeking information or support, and partial closure of curtains around the individual's bed space for periods of solitude or rest. The findings have implications for both general and maternity hospital wards but in particular, wards within maternity units that incorporate women with mixed methods of infant feeding, or women in labour mixed with either postnatal or antenatal women.

Engineering for quality in the postanesthesia care unit: an outcomes approach.

For the past 18 months, we have been monitoring three categories of outcome indicators. This process has aided us in decreasing overall patient length of stay (LOS) and improved the quality of care we provide our PACU patients. Using a local area network (LAN) computer program, we track the following: a set of sentinel indicators, a set of proximate clinical outcome indicators, and a set of system indicators based on nonclinical issues that prolong PACU LOS. The LAN computer program links the surgical scheduling department, OR, and PACU, and aids in accurately compiling and collating data. Quality improvement tools to facilitate further scrutiny of processes and aspects of care felt to be of particular relevance to perioperative nursing have also been developed. We are entering an era in which external accrediting agencies and third-party payers are placing an increasing emphasis on measuring and optimizing patient outcomes. This overall program will position the PACU at an advantage in meeting such challenges.

Glycine max signaling of environmental stress: Dynamics of inducible aromatic allelochemistry.

Treatment of Davis soybeans (Glycine max (L.) Merrill) with a proven stress elicitor, iodoacetic acid, which binds specifically with sulfhydryl groups, induced a defensive phytochemistry, which included increased concentrations of aromatic compounds. High-performance liquid chromatography resolved groups of peaks, including one that contains the major allelochemical daidzein and several that contained relatively nonpolar compounds. Some peak groups were increased quantitatively, while others were decreased by iodoacetic acid elicitation. The more significant differences in methanol-extractable HPLC-resolved aromatic metabolites between elicited and nonelicitedG. max apical leaves occurred at 24, 48, and 72 hr after elicitation.

Role of the isoflavonoid coumestrol in the constitutive antixenosic properties of "Davis" soybeans against an oligophagous insect, the mexican bean beetle.

The antixenosic properties of the isoflavonoid, coumestrol, were tested in dual-choice leaf disk bioassays with the Mexican bean beetle (Epilachna varivestis Mulsant).E. varivestis preferred the methanol-r,reated (solvent-control) disk when the coumestrol concentration was 1.8 or 0.9µ/leaf disk. No preference was observed between the coumestrol-treated and the solvent-control disks when the coumestrol concentration was higher, at 3.6, or lower, at 0.45µg/leaf disk. Coumestrol alone clearly is not responsible for the significant constitutive antixenosic properties of "Davis" soybeans,Glycine max (L.) Merrill, because the amount of coumestrol in these plants is significantly less than the minimum concentration which was antixenosic in this study. However, it might contribute to a constitutive antixenosis in "Davis" involving a profile of allelochemicals. A computer-aided densitometer, adapted to measure the leaf disk area, increased the resolution of the leaf area 250 (X)-fold as compared to the standard LI-COR leaf area meter.

Bladder volume determination using a dedicated, portable ultrasound scanner.

Urethral catheterization, the standard method for measurement of bladder volume, is associated with patient discomfort plus the risks of urethral trauma and urinary tract infection. A portable ultrasound instrument that automatically determines bladder volume was used for 164 determinations and the digital readout correlated with the catheterized volume (r2 equals 0.79). This instrument is a noninvasive alternative to urethral catheterization for the determination of bladder volume in most patients.