Comparison of Coaxial and Side-By-Side Double Lumen Subclavian Catheters With the Single Lumen Catheter

1986 ◽  
Vol 7 (3) ◽  
pp. 221-224 ◽  
Author(s):  
Antonio de los Angeles ◽  
Arthur Lerner ◽  
Stephen J. Goldstein ◽  
Mark S. Kramer ◽  
Rasib M. Raja
Keyword(s):  
Double Lumen ◽  
Single Lumen ◽  
Lumen Catheter

A Technique for the Laboratory Determination of Recirculation in Single Needle Dialysis

1993 ◽  
Vol 16 (2) ◽  
pp. 63-70 ◽  
Author(s):  
N.A. Hoenich ◽  
P.T. Smirthwaite ◽  
C. Woffindin ◽  
P. Lancaster ◽  
T.H. Frost ◽  
...  
Keyword(s):  
Experimental Data ◽  
Flow Rate ◽  
Experimental Results ◽  
New Technique ◽  
Treatment Efficiency ◽  
Single Lumen ◽  
Theoretical Predictions ◽  
Lumen Catheter ◽  
A New Technique

Recirculation is an important factor in single needle dialysis and, if high, can compromise treatment efficiency. To provide information regarding recirculation characteristics of access devices used in single needle dialysis, we have developed a new technique to characterise recirculation and have used this to measure the recirculation of a Terumo 15G fistula needle and a VasCath SC2300 single lumen catheter. The experimentally obtained results agreed well with those established clinically (8.5 ± 2.4% and 18.4 ± 3.4%). The experimental results have also demonstrated a dependence on access type, pump speeds and fistula flow rate. A comparison of experimental data with theoretical predictions showed that the latter exceeded those measured with the largest contribution being due to the experimental fistula.

Preliminary Experiment with a Newly Developed Double Balloon, Double Lumen Catheter for Extracorporeal Life Support Vascular Access

ASAIO Journal ◽  
2003 ◽  
Vol 49 (5) ◽  
pp. 583-588 ◽  
Author(s):  
Taisuke Okamoto ◽  
Keisuke Ichinose ◽  
Hironari Tanimoto ◽  
Atsushi Yoshitake ◽  
Yuji Sakanashi ◽  
...  
Keyword(s):  
Vascular Access ◽  
Life Support ◽  
Extracorporeal Life Support ◽  
Double Lumen ◽  
Double Balloon ◽  
Double Lumen Catheter ◽  
Lumen Catheter

Interaction between serotonin and efferent vagus nerves in dog lungs

1978 ◽  
Vol 44 (2) ◽  
pp. 144-149 ◽  
Author(s):  
H. L. Hahn ◽  
A. G. Wilson ◽  
P. D. Graf ◽  
S. P. Fischer ◽  
J. A. Nadel
Keyword(s):  
Smooth Muscle ◽  
Vagal Stimulation ◽  
Transpulmonary Pressure ◽  
Pressure Amplitude ◽  
Vagus Nerves ◽  
Pulmonary Resistance ◽  
Double Lumen ◽  
Contralateral Lung ◽  
Double Lumen Catheter ◽  
Lumen Catheter

We anesthetized, paralyzed, and ventilated 32 dogs. In 16 dogs we measured total pulmonary resistance (RL) during inhalation of acetylcholine (ACh), serotonin (5-HT), and histamine (Hist) aerosols. Cooling both cervical vagi reduced the bronchoconstriction caused by 5-HT 64% (P = 0.001), reduced Hist-induced bronchoconstriction 17% (P = 0.003), and did not significantly reduce bronchoconstriction due to ACh. In seven dogs, we ventilated both lungs separately through a double-lumen catheter. Application of 5-HT to one lung increased the transpulmonary pressure amplitude in the homolateral but not in the contralateral lung. Cooling the homolateral vagus reduced this response 32% (P = 0.02). In nine dogs, we stimulated the peripheral ends of both cut cervical vagi before and during aerosol application of ACh, 5-HT, and Hist. ACh and Hist increased baseline RL 97 and 134%, respectively, without increasing the effect of vagal stimulation. 5-HT increased baseline RL only 27% but greatly augmented the effect of vagal stimulation (mean increase, 271%, P = 0.001). We conclude that 5-HT acts to potentiate vagal effects on airway smooth muscle via the efferent vagal pathway.

scholarly journals The development of a risk score for unplanned removal of peripherally inserted central catheter in newborns

2015 ◽  
Vol 23 (3) ◽  
pp. 475-482 ◽  
Author(s):  
Priscila Costa ◽  
Amélia Fumiko Kimura ◽  
Debra Huffman Brandon ◽  
Eny Dorea Paiva ◽  
Patricia Ponce de Camargo
Keyword(s):  
Risk Factors ◽  
Risk Score ◽  
Neonatal Intensive Care ◽  
Operating Characteristic ◽  
Bivariate Analysis ◽  
Peripherally Inserted Central Catheter ◽  
Central Catheter ◽  
Single Lumen ◽  
Double Lumen Catheter ◽  
Lumen Catheter

OBJECTIVE: to develop a risk score for unplanned removal of peripherally inserted central catheter in newborns.METHOD: prospective cohort study conducted in a neonatal intensive care unit with newborn babies who underwent 524 catheter insertions. The clinical characteristics of the newborn, catheter insertion and intravenous therapy were tested as risk factors for the unplanned removal of catheters using bivariate analysis. The risk score was developed using logistic regression. Accuracy was internally validated based on the area under the Receiver Operating Characteristic curve.RESULTS: the risk score was made up of the following risk factors: transient metabolic disorders; previous insertion of catheter; use of a polyurethane double-lumen catheter; infusion of multiple intravenous solutions through a single-lumen catheter; and tip in a noncentral position. Newborns were classified into three categories of risk of unplanned removal: low (0 to 3 points), moderate (4 to 8 points), and high (≥ 9 points). Accuracy was 0.76.CONCLUSION: the adoption of evidence-based preventative strategies based on the classification and risk factors faced by the newborn is recommended to minimize the occurrence of unplanned removals.

scholarly journals Korelasi antara Letak Ujung Kateter Lumen Ganda Femoralis Jangka Pendek Non-tunneling dengan Laju Aliran darah pada Saat Hemodialisis di RSUP Prof Dr. R. D. Kandou

2018 ◽  
Vol 10 (2) ◽  
Author(s):  
Fery Purba ◽  
Richard Sumangkut ◽  
Djoni E. Tjandra
Keyword(s):  
Renal Failure ◽  
Positive Relationship ◽  
Scatter Plot ◽  
Short Term ◽  
Double Lumen ◽  
End Stage Renal Failure ◽  
Double Lumen Catheter ◽  
Lumen Catheter ◽  
Tip Position ◽  
End Stage

Abstract: Patients with end-stage renal failure are unable to survive without dialysis or renal transplantation. To achieve effective dialysis using a double lumen catheter, placement of the catheter tip plays an important role because it may affect blood flow/Quick of Blood (QB). The selection of femoral vein access is more favorable in critical patients. This study was aimed to obtain the correlation between the tip position of the non-tunneling short-term femoral double lumen catheter (DLC) and QB at the time of hemodialysis. This was an analytical correlative and prospective study with a cross-sectional design in patients with end-stage renal failure undergoing hemodialysis using a non-tunneling short-term femoral DLC. This study was conducted at the Hemodialysis Installation of Prof. Dr. R. D. Kandou Hospital Manado. Data were analyzed by using the Pearson's r test. The results showed that there were 31 patients enrolled in this study. The Pearson’s r test obtained an r of 0.147 (statistically weak) and Sig (2-tailed) of 0.430 which showed no correlation but the scatter plot showed a tendency of a weak positive relationship. Conclusion: There was no significant correlation between Qb and the tip position of DLC, albeit, there was a tendency of a weak positive relationship. Increasing the number of samples will more accurately predict the presence or absence of the correlation between Qb and the tip position of the DLC.Keywords: DLC, QB, hemodialysisAbstrak: Pasien dengan penyakit ginjal stadium akhir tidak dapat mempertahankan hidup tanpa dukungan terapi pengganti ginjal yaitu dialisis atau transplantasi ginjal. Untuk mencapai dialisis yang efektif dengan menggunakan kateter lumen ganda, penempatan kateter berperan penting karena dapat memengaruhi aliran darah/Quick of Blood (QB). Pemilihan akses vena femoralis lebih menguntungkan pada pasien kritis. Penelitian ini bertujuan untuk mengetahui korelasi letak ujung kateter lumen ganda femoralis jangka pendek (DLC) dengan QB pada saat hemodialisis. Jenis penelitian ialah analitik korelatif dan prospektif dengan desain potong lintang. Subyek penelitian ialah pasien dengan gagal ginjal tahap akhir yang menjalani hemodialisis menggunakan kateter lumen ganda femoralis jangka pendek non-tunneling. Penelitian dilakukan di Instalasi Hemodialisis RSUP Prof. Dr. R. D. Kandou, Manado. Data dianalisis menggunakan koefisien korelasi Pearson. Hasil penelitian mendapatkan 31 pasien sebagai subyek. Hasil analisis koefisien Pearson terhadap korelasi antara letak ujung DLC dan QB memperlihatkan hubungan statistik lemah (r = 0,147) dengan Sig (2-tailed) 0,430 yang menunjukkan tidak terdapat hubungan bermakna tetapi pada scatter plot terlihat adanya kecenderungan hubungan positif lemah. Simpulan: Tidak terdapat korelasi bermakna antara Qb dan letak ujung DLC tetapi terdapat kecenderungan hubungan positif lemah. Menambah jumlah sampel akan lebih akurat untuk memrediksi ada tidaknya hubungan antara Qb dan letak ujung DLC. Kata kunci: DLC, laju aliran dara (QB), hemodialisis

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