puncture

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puncture

1. a perforation and loss of pressure in a pneumatic tyre, made by sharp stones, glass, etc.
2. the act of puncturing or perforating

Puncture

 

a piercing of the wall of any cavity, vessel, hollow or parenchymatous organ, tumor, or infiltrate for purposes of treatment or diagnosis. Exploratory punctures are used to help accurately diagnose diseases either through analysis of the contents of a cavity—the pleural cavity, for example—and subsequent cytological, biochemical, and bacteriological examination or through microscopic, ultramicroscopic, cytochemical, and chromosomal study of cells obtained from pathologically altered organs. It is also used for measuring the pressure in the cavities of the heart, large blood vessels, and the cerebrospinal canal and for introducing into a cavity contrast materials or air (radiodiagnostics). Therapeutic punctures are used to extract pus, blood, air, or fluid from a cavity, wash the cavity, and introduce medicinal substances. Often both types of punctures coincide.

There are a number of common punctures. Veins are punctured in order to obtain blood for analysis and for bloodletting, injection of medication, or transfusion of blood. In the case of exudative pleuritis, the pleural cavity is punctured in order to remove air from the cavity and induce artificial pneumothorax. The abdominal cavity is punctured if ascites is present, and joints are punctured for therapeutic and exploratory purposes. Puncture of the cerebrospinal canal is performed for analysis of the cerebrospinal fluid or injection of medications or radiopa-que substances. The urinary bladder is punctured when there is urinary retention and it is impossible to introduce a catheter. Puncture is done with a syringe and a special needle or trocar, according to all the principles of asepsis and anesthesia.

REFERENCE

Diagnosticheskaia i lerapevlicheskaia lekhnika. Edited by V. S. Maiata. Moscow, 1969.

A. N. SMIRNOV

puncture

[′pəŋk·chər]
(electricity)
Disruptive discharge through insulation involving a sudden and large increase in current through the insulation due to complete failure under electrostatic stress.
(science and technology)
To pierce or indent.
References in periodicals archive ?
We are using transthoracic echocardiography (TTE) as guiding tool for percutaneous PDA device closure in selected small infants to save arterial puncture which may lead to femoral artery thrombosis sometimes very difficult to regain circulation in spite of administering heparin post procedure.
Pseudoaneurysm: A complication of faulty technique in femoral arterial puncture.
Multimodal monitors were present in general theatres, catheters for direct arterial puncture were available and increasingly complex patients and operations demanded more intensive and invasive monitoring.
2) Technical and safety considerations determine that, for most patients who require blood-gas analysis, placement of an arterial catheter is either not justified or justified for only a limited period, so that arterial blood is most often sampled by arterial puncture using needle and syringes.
Finally, the surveyor requested specific competency assessment data for specific positions, such as arterial puncture competency for respiratory therapist and age specific procedures in areas such as the Emergency Department, Special Care Nursery, and Pediatrics.
The MedClose(TM) is a proprietary catheter based system that uses Tisseel(R) VH Fibrin Sealant to rapidly seal arterial puncture sites following angiography and angioplasty.
A pseudoaneurysm is defined as a false lumen that occurs at an arterial puncture site and contains active flowing arterial blood.
The traditional modes of either arterial puncture or skin puncture (for capillary blood) have an inherent source of error: Both cause the baby to cry, resulting in significant changes in [Po.
Unlike previous articles in the literature, this patient was not being treated with anticoagulants at the time of the arterial puncture.
Randomized controlled trials [sup][5] have indicated that real-time ultrasound guided venipuncture of the internal jugular vein has a higher first insertion attempt success rate, reduced access time, higher overall successful cannulation rate, and decreased the rate of arterial puncture compared to the landmark-guided technique.

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