venipuncture

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venipuncture

 [ven″ĭ-pungk´chur]
surgical puncture of a vein; see illustration.
Needle placement during venipuncture. To obtain good blood flow, the needle is positioned correctly in the vein lumen. The needle should not rest against the upper wall of the vein or puncture through the vein wall on the opposite side. From Malarkey and McMorrow, 2000.

ven·i·punc·ture

(ven'i-pŭnk'chūr, vē'ni-),
The puncture of a vein, usually to withdraw blood or inject a solution.

venipuncture

(vē′nĭ-pŭngk′chər, vĕn′ĭ-)
n.
Puncture of a vein, as for drawing blood, intravenous feeding, or administration of medicine.

venipuncture

The puncture of a vein with a needle with the intent to either obtain blood or administer a therapeutic substance. See Phlebotomy. Cf Cut-down.

ven·i·punc·ture

(ven'i-pŭngk'shŭr)
The puncture of a vein, usually to withdraw blood or inject a solution.
Enlarge picture
VENIPUNCTURE: Antecubital area of arm showing proper veins for venipuncture

venipuncture

(ven'i-punk?chur) [L. vena, vein, + punctura, a point]
Puncture of a vein, typically to obtain a specimen of blood. The pain of venipuncture may be diminished by several methods, including application of cold to the area just prior to the puncture; injection of sterile, normal saline intracutaneously to produce blanching of the site; and use of a local anesthetic to produce a wheal at the site.
See: intravenous infusion; illustration

ven·i·punc·ture

(ven'i-pŭngk'shŭr)
The puncture of a vein, usually to withdraw blood.
References in periodicals archive ?
The blood samples were used for hematological parameters including red blood cells (RBC) count, packed cell volume (PCV), hemoglobin (Hgb) concentration, and mean corpuscular volume (MCV).
In such cases, police ask hospitals to provide blood samples.
"I said I would give a urine sample but I couldn't give a blood sample because I was recovering from a major operation."
All you need is someone to draw a blood sample, an ordinary shaker, incubator, a desktop scanner and a computer," Carey noted.
Earlier, the high court had asked 86- year- old Tiwari to submit his blood sample before it.
SN admitted that he got fitness certificates issued to people with communicable diseases by tampering with blood samples. He used to send the blood sample of a healthy patient with the sick applicant's documents to the laboratory.
This is especially true when collecting blood samples from patients with difficult venous access (DVA), where the blood flow is compromised due to low pressure or narrow vessel diameter, making it difficult or impossible to collect a sufficient blood sample.
1 shows typical sensor response patterns to blood collected using the covered and exposed sampling devices from the same animal, followed by the standard addition of 3 [micro]mol/L GSNO to the diluted whole blood sample. It can be seen that exposure to light, though brief, substantially decreases the detected RSNO concentration from 1.45 [micro]mol/L in the covered blood sample (whole blood concentration, not plasma phase concentration, which can be reported if values are corrected for hematocrit) to 0.40 [micro]mol/L in the exposed sample (based on converting the steady-state response in current units to RSNO concentration units).
Each woman choosing to participate provided a blood sample and information about sociodemographic characteristics, obstetric and gynecologic history, alcohol and tobacco use, occupation, and previous pesticide use.
CITY medics wrongly warned a Liverpool woman she could die after confusing her blood sample with that of another patient.
A blood sample was collected from the patient on December 7; anticoagulation was accomplished with ethylenediaminetetraacetic acid (EDTA) for repeated biochemistry analysis and complete blood count.
Next, they pumped each blood sample from the Philadelphia medical students into a separate rat's arterial tube and collected the liquid as it came out of the cancerous human tissue.