MyMedR

Displaying all 8 publications

Abstract:

Sort:

Fulltext Patterns of superficial veins of the cubital fossa in Malays

Dharap AS, Shaharuddin MY

Med J Malaysia, 1994 Sep;49(3):239-41.
PMID: 7845272

Patterns of superficial veins of the cubital fossa were studied in 170 male and 96 female Malays. Six venous patterns were observed. The less commonly known but clinically important patterns observed included absence of communication between basilic and cephalic veins (in 7.3% females and 8.8% males); an arched median cubital vein (in 2.0% females and 6.5% males); absence of the cephalic vein (in 1.0% females and 2.9% males) and two median cubital veins (in 1 male only). Awareness of these uncommon cubital venous patterns and their approximate incidence would be very useful for those performing venepuncture or venesection in Malays, especially under emergency conditions.

Matched MeSH terms: Forearm/blood supply*
Patterns of the superficial veins of the cubital fossa: A meta-analysis

Yammine K, Erić M

Phlebology, 2017 Jul;32(6):403-414.
PMID: 27343223 DOI: 10.1177/0268355516655670

Background The aim of this systematic review is to quantitatively synthesize evidence on the prevalence of superficial vein patterns in the cubital region. Method A systematic literature search was conducted through a number of electronic databases. We identified 27 studies, including 9924 arms, which met the inclusion criteria. Results Meta-analysis showed that "N" shaped arrangement type was the commonest pattern (≈44-60%) followed by "M" shaped arrangement (≈20-25%). The prevalence of "M" type and "M"-like type was significantly higher in males, whereas females showed a significant predominance of "I" or "O" type. No significant differences in various pattern types were found for laterality. The frequency of "M" type is significantly lesser in Indian and Japanese populations, but they have significantly higher frequency of "N" type. In Malay population, "I" or "O" type was significantly higher, while the brachial CV was poorly developed or missing significantly in Indian population. Conclusion This evidence-based clinical anatomy review contributes to our anatomical knowledge regarding the true prevalence of pattern types of the superficial veins in cubital region in humans and, subsequently, might help in performing safer venous access and more direct approaches to these veins, especially under emergency conditions.

Matched MeSH terms: Forearm/blood supply*
Fulltext Peripheral Intravenous Catheterisation in Obstetric Patients in the Hand or Forearm Vein: A Randomised Trial

Tan PC, Mackeen A, Khong SY, Omar SZ, Noor Azmi MA

Sci Rep, 2016 Mar 18;6:23223.
PMID: 26987593 DOI: 10.1038/srep23223

A peripheral intravenous catheter is often inserted as part of care during labour. The catheter is inserted into the back of the hand or lower forearm vein in usual practice. There is no trial data to guide the care provider on which is the better insertion site in any clinical setting. 307 women admitted to the labour ward who required insertion of intravenous catheter were randomised to back of hand or lower forearm vein catheter insertion. Catheter insertion is by junior to mid-grade providers. We evaluated insertion success at the first attempt, pain during insertion and catheter replacement due to malfunction as main outcomes. After catheter removal, we recorded patient satisfaction with site, future site preference and insertion site swelling, bruising, tenderness, vein thrombosis and pain. Insertion of a catheter into back of hand vein is more likely to be successful at the first attempt. Insertion pain score, catheter replacement rate, patient satisfaction, patient fidelity to site in a future insertion and insertion site complications rate are not different between trial arms. In conclusion, both insertion sites are suitable; the back of the hand vein maybe easier to cannulate and seems to be preferred by our frontline providers.

Matched MeSH terms: Forearm/blood supply*
Dependence of human forearm skin postocclusive reactive hyperemia on occlusion time

Tee GB, Rasool AH, Halim AS, Rahman AR

J Pharmacol Toxicol Methods, 2004 Jul-Aug;50(1):73-8.
PMID: 15233971 DOI: 10.1016/j.vascn.2004.02.002

Human postocclusive forearm skin reactive hyperemia is not only a potential means of identifying early signs of cardiovascular diseases, it can also be used in the assessment of local microvascular response to topically applied compounds on skin. The method is not fully characterized. In this study, we investigated the influence of occlusion time on postocclusive forearm skin reactive hyperemia using laser Doppler fluximetry (LDF).

Matched MeSH terms: Forearm/blood supply
Reproducibility of different laser Doppler fluximetry parameters of postocclusive reactive hyperemia in human forearm skin

Yvonne-Tee GB, Rasool AH, Halim AS, Rahman AR

J Pharmacol Toxicol Methods, 2005 Sep-Oct;52(2):286-92.
PMID: 16125628

Postocclusive reactive hyperemia in forearm skin is a commonly used model for studying microvascular reactivity function, particularly in the assessment of vascular effect of topically applied pharmacological substances. In this study, we investigated the reproducibility of several different laser-Doppler-derived parameters in the measurement of postocclusive reactive hyperemia at forearm skin in healthy subjects.

Matched MeSH terms: Forearm/blood supply
Endothelial nitric oxide synthase G894T gene polymorphism and response to skin reactive hyperemia

Rasool AH, Ghazali DM, Abdullah H, Halim AS, Wong AR

Microvasc Res, 2009 Sep;78(2):230-4.
PMID: 19481100 DOI: 10.1016/j.mvr.2009.05.005

Post occlusive skin reactive hyperemia (PORH) is a tool used to assess microcirculation. Endothelial nitric oxide synthase (eNOS) mediates nitric oxide (NO) production; polymorphism of the eNOS gene may affect response to the PORH process. This study aims to determine whether eNOS G894T gene polymorphism affects response to skin PORH. 230 normotensive male and females between 18 and 40 years participated in this cross-sectional study. 170 subjects were of the homozygous GG genotype, whereas 60 were of the GT genotype. Skin PORH was performed by occlusion of the upper arm at 200 mm Hg for 3 min. Skin perfusion and temperature were monitored before, during and after occlusion release using the laser Doppler fluximetry. There were no significant differences between genotypes in their baseline blood pressure, serum cholesterol, BMI and age. Maximum change in perfusion after occlusion release (PORHmax) for the GG and GT genotypes were not significantly different at 50.15+/-1.29 vs. 47.92+/-2.17 AU; ANCOVA, p=0.351. Peak perfusion (PORHpeak) were also not significantly different between the two genotypes (61.23+/-1.36 vs. 57.72+/-2.32 AU; p=0.169). Minimum baseline perfusion were however higher in the GG compared to the GT genotype (10.83+/-0.29 vs. 9.61+/-0.50, p=0.029). We conclude that microvascular reactivity, assessed by change in perfusion after temporary ischemia was not significantly different between the GG and GT genotypes of the eNOS G894T gene. eNOS 894T allele carriers however, have lower baseline perfusion compared to the homozygous G894 allele carrier.

Matched MeSH terms: Forearm/blood supply
Assessment of macrovascular endothelial function using pulse wave analysis and its association with microvascular reactivity in healthy subjects

Ibrahim NNIN, Rasool AHG

Skin Res Technol, 2017 Aug;23(3):321-325.
PMID: 27868242 DOI: 10.1111/srt.12338

BACKGROUND: Pulse wave analysis (PWA) and laser Doppler fluximetry (LDF) are non-invasive methods of assessing macrovascular endothelial function and microvascular reactivity respectively. The aim of this study was to assess the correlation between macrovascular endothelial function assessed by PWA and microvascular reactivity assessed by LDF.
METHOD: 297 healthy and non-smoking subjects (159 females, mean age (±SD) 23.56 ± 4.54 years) underwent microvascular reactivity assessment using LDF followed by macrovascular endothelial function assessments using PWA.
RESULTS: Pearson's correlation showed no correlation between macrovascular endothelial function and microvascular reactivity (r = -0.10, P = 0.12).
CONCLUSION: There was no significant correlation between macrovascular endothelial function assessed by PWA and microvascular reactivity assessed by LDF in healthy subjects.

Matched MeSH terms: Forearm/blood supply*
Autogenous forearm loop arteriovenous fistula creation

Tang WJ, Mat Saad AZ

J Vasc Access, 2018 Mar;19(2):191-194.
PMID: 29148006 DOI: 10.5301/jva.5000801

INTRODUCTION: Arteriovenous fistula is a lifeline for end-stage kidney disease patients on dialysis. The quality of the vein and artery to be used plays a crucial role in attaining a functioning, reliable and long-lasting arteriovenous fistula. The aim of the study is to present an alternative for haemodialysis access to preserve the upper arm vasculature for future use - the forearm loop arteriovenous fistula.
METHODS: From October 2015 to September 2016, 202 patients with chronic kidney disease (CKD), stages 4 and 5, underwent arteriovenous fistula creation at the Universiti Sains Malaysia Hospital, Malaysia. Nine patients, with severe atherosclerosis of the distal artery, but with satisfactory veins, underwent forearm loop arteriovenous fistula creation. Maturation of the fistula was based on the classification by the National Kidney Foundation Kidney Disease Outcomes Quality Initiative (NKF KDOQI).
RESULTS: All nine patients who underwent forearm loop arteriovenous fistula have had diabetes mellitus for more than 10 years. Only one fistula failed to mature within 6 weeks. Two arteriovenous fistulas thrombosed at 3 and 5 months, respectively, after the commencement of haemodialysis. However, the other six matured fistulas are still functioning well after a year of regular usage.
CONCLUSIONS: Distal forearm arteries in diabetics may be severely atherosclerotic. Forearm loop arteriovenous fistula can be considered as the primary access for cases decided as inconvenient for fistula creation due to severe occlusive atherosclerotic disease of the forearm arteries; in order to preserve upper arm veins for future access procedures.

Matched MeSH terms: Forearm/blood supply*