The Cardiovascular System and its Disorders
Walter F. Stanaszek, Mary J. Stanaszek, Robert J. Holt, Steven Strauss in Understanding Medical Terms, 2020
Cardiac catheterization is a specialized technique whereby a flexible catheter is passed along veins or arteries into the heart to explore structures, measure pressures and blood-gasses, and inject radiopaque dyes for angiography. Relying on fluoroscopy with an image intensifier and a television system, catheterization allows the physician to use radiopaque catheters and dyes to measure septal defects, locate and quantify partial occlusions, isolate the sources of arrhythmias, and determine vascular function. Invasive and requiring specialized training, cardiac catheterization is usually reserved for problems that cannot be resolved without it.
Scientific Basis of Urodynamics
Anthony R. Mundy, John M. Fitzpatrick, David E. Neal, Nicholas J. R. George in The Scientific Basis of Urology, 2010
The aim of cystometry is to investigate the pressurevolume relationship of the bladder during the filling and storage phases. To measure pressure, a catheter is introduced into the bladder either per urethra or, if access is available, suprapubically. In addition to measuring bladder pressure, it is important to measure intra-abdominal pressure, usually through a catheter placed in the rectum. In this way, the intraabdominal pressure (Pabd) can be subtracted from the intravesical pressure (Pves) to give a true detrusor pressure (Pdet) free from artefacts caused by extravesical pressure increases, such as coughing or straining. However, it must be noted that in addition to abdominal pressure changes, Pabd will also reflect intrinsic bowel activity (Fig. 7).
Trauma and orthopaedic surgery
Janesh K Gupta in Core Clinical Cases in Surgery and Surgical Specialties, 2014
Examination of the perianal area is crucial. If the disc prolapse is central rather than lateral, cauda equina syndrome may result. In this case the patient will have no desire to void if nerve root entrapment affects those nerves mediating sensation to the bladder. Painless retention occurs and, unless surgical decompression is carried out urgently, incontinence and loss of sexual function will be permanent. Such patients usually have bilateral lower leg sciatic pain and bilateral perianal numbness with loss of anal tone. Careful clinical examination will often demonstrate the presence of a full bladder in a patient in whom there is no desire to void. Passage of a catheter is usually easy and pain free, with little sensation of catheter insertion experienced by the patient. A large volume of urine is usually drained.
Contact force sensors in minimally invasive catheters: current and future applications
Published in Expert Review of Medical Devices, 2021
Weyland Cheng, Manye Yao, Bo Zhai, Penggao Wang
Minimally invasive catheters are used to perform diagnostic or therapeutic intravascular procedures with the advantages of drastically minimizing trauma to patients, reducing recovery time, and reducing postoperative pain compared to traditional open procedures. Catheterization procedures can include angiography, angioplasty, coronary artery bypass graft, ablation, valve repair or replacement, valvuloplasty, heart defect repair, and thrombectomy [1–5]. In addition, regenerative cells or injectable materials can be delivered using catheters to treat ailments such as myocardial infarction and osteonecrosis of the femoral head [6–9]. In minimally invasive catheterization procedures, catheters are inserted through a small incision and passed along an artery or vein to access a target region.
Evaluation of the Macy Catheter®: a rectal catheter for rapid medication and fluid administration
Published in Expert Review of Medical Devices, 2018
Kim Marie C. Macygin, Erik Kulstad, Robert K. Mokszycki, Morgan Goldsmith
A variety of patients in different care settings need an alternative delivery route for fluid and medication when the oral route is compromised and venous access is not practical, not warranted, or difficult to obtain.The Macy Catheter is the first FDA indicated rectal catheter for on-going administration of fluid and medications. It can remain in place for up to 28 days. Insertion of the catheter is a quick, painless, non-sterile procedure, which can be performed by a trained healthcare provider.The simplicity, speed and versatility of the Macy Catheter make the rectal route a viable first line alternative for fluid and medication delivery when the oral route is compromised. The Macy Catheter can be used for a variety of patient conditions across the entire lifespan.
Urological approach for cytoreductive surgery and hyperthermic intraperitoneal chemotherapy in a clinical care center
Published in Acta Chirurgica Belgica, 2018
Carlos Gustavo Trujillo, Cristina Domínguez, Daniela Robledo, Juan Ignacio Caicedo, Alejandra Bravo-Balado, Juan Guillermo Cataño, Natalia Cortés, Lina Parra, Wilson Riaño, Eduardo Londoño-Schimmer, Jorge Otero, Gabriel Herrera, Fernando Arias, Mauricio Plata
Limitations of this study include its retrospective and descriptive design and small sample, which makes it difficult to include inferential analyses. In our institution, ureteral catheterization is performed as a routine procedure. Although, some series do not show ureteral catheterization to be beneficial, it may help to prevent complications by improving visual and tactile identification during the surgical procedure, which might explain our low rate of complications. However, we believe the role of catheterization should be tailored to individual patients and the definition criteria for its use should be developed through well-designed clinical trials. Quality improvement studies should include measurement of outcomes using these interventions. Also, it is important that standardization and continuous improvement through self-assessment constitutes one of the main objectives of our Clinical Care Center. This focuses on strengthening adherence to the protocol, optimizing communication among members of the team in different specialties and enhancing documentation of the entire process in the clinical records.
Related Knowledge Centers
- Abscess
- Bladder
- Intermittent Catheterisation
- Nephrostomy
- Suprapubic Cystostomy
- Urine
- Foley Catheter
- Urethra
- Peripherally Inserted Central Catheter
- Urinary Catheterization