PubMed Health⌕ Search

Biomedical subjects

M Paz-Partlow

Publications and source records attributed to M Paz-Partlow.

25 records · Page 2Linked to original sources
PubMed1988

Electronic imaging in endoscopy.

Endoscopy evolved from a hollow tube view of visually restricted areas into an expansive, distal representation of the anatomy. Rod lens telescopes, improved coherent imaging bundles, superior light sources, and other optical advances enhanced endoscopic observations. Yet complicated endoscopic procedures remained visible to the endoscopist alone, relegating assistance and consultation to verbal description of sophisticated visual observation. Instrumentational advances alone did not promote three crucial elements: participation, cooperation and documentation. The importance of these elements has increased with the need for coordinated assistance in complex operative endoscopic manipulations, as well as in a visual record for improved documentation and consultation. New imaging technologies are supplanting the unwieldy, often daunting equipment once required for photodocumentation. The charged couple device (CCD) 2/3 and 1/2 in. "chip" video camera miniaturization provides nearly weightless TV coobservation. Distal chip placement has created the "video endoscope". Combined with the 8 mm tape format, the chip has created a lightweight, single unit camera, monitor, and recorder. A recent advantage, magnetic disc recording, permits still video storage of up to 25 images. An electronic printer produces a hard color copy (4 x 5), which is inserted in the chart before the patient leaves the endoscopy room. The cost of the equipment can be shared in multidisciplinary institutions.

Costs and Cost Analysis↗
PubMed1988

The impact of electronic imaging in intraoperative biliary endoscopy (choledochoscopy).

In the last decade, choledochoscopy has become an essential tool for biliary surgery. It is widely accepted, but it is not employed by every surgeon who performs choledocholithotomies. The reason is the limited experience of surgeons performing 30-40 cholecystectomies per year. A survey of 150 hospitals clearly showed that common bile duct exploration is performed in 10%-15% of these cases. General surgeons are not endoscopists. A new video choledochoscope that displays the image in a large format via the TV monitor was developed, which can be viewed with both eyes and an assistant's help; this expedites and coordinates the procedure. The entire process is videotaped and can be used for further analysis and during consultation. It has become the method of choice for teaching. Most importantly, the learning curve of general surgeons has become significantly shorter. The procedure is taught and the surgeon can learn it easily. Its use will contribute to a decrease in the incidence of retained stones and will improve patient care.

Animals↗
PubMed1988

Mini-laparoscopy in blunt abdominal trauma.

Blunt abdominal trauma in multiorgan injured or comatose patients always presents a problem. The aim is to assess, in the shortest period of time, which organ injury requires priority and whether intra-abdominal bleeding or perforation exists. Abdominal lavage proved to be too sensitive. Not every positive case needs exploration. Approximately 15%-20% of the cases explored because of positive lavage did not show a significant bleeding site that would require surgical treatment. The authors developed a mini-laparoscope that can be used at the bedside, in the emergency room, or in the intensive care unit. The procedure can be performed with intravenous sedation and local anesthesia. In 150 cases, no hemoperitoneum was found in 53% of these cases. Except for 1, none of these patients needed further exploration. In 21%, severe hemoperitoneum was discovered; these patients were transferred to the operating room, and this was confirmed by surgery. In 26%, a small amount of blood was found in the gutters. These patients were observed in the intensive care unit and an unnecessary exploration was avoided. Laparoscopy gives a wider range of decision making by observing the abdominal cavity. It can be completed in 10-20 min at the bedside. No serious complications were encountered. This procedure should be taught and practiced in trauma centers.

Abdominal Injuries↗
PubMed1986

TV laparoscopy. A new dimension in visualization and documentation of pelvic pathology.

A new miniature color TV camera is employed routinely during laparoscopy. It offers the following advantages: a binocular view from a convenient distance; a significantly enlarged image; easy observation of minute changes; observation of the procedure by the entire team, thereby permitting faster coordinated manipulations involving the assistant; provision of simultaneous, permanent records; and the method of choice in teaching.

Female↗
PubMed1985

Television choledochoscopy.

Present techniques of intraoperative cholangiography and choledochoscopy have not completely solved the problem of the common bile duct stone that is missed. Televised choledochoscopy provides an improved imaging technique which should facilitate stone retrieval. A similar television endoscopic technique has already become standard among orthopedic surgeons performing diagnostic and therapeutic arthroscopy. This equipment can be shared by surgeons specializing in orthopedic or general surgery.

Endoscopy↗
PubMedDate not supplied

The rotary gallstone lithotrite to aid gallbladder extraction in laparoscopic cholecystectomy.

During laparoscopic cholecystectomy, a large stone burden may cause difficulty when extracting the gallbladder through the abdominal wall. Currently, the alternatives available to the surgeon include increasing the incision, removing stones singly, or utilizing complex fragmentation techniques like the pulsed dye laser. We have employed an electromechanical rotary gallstone lithotrite (RGL) to fragment stones to an aspiratable size. Initially, cholesterol spheres were pulverized in a latex balloon to demonstrate the efficacy of the device. Then, human gallstones were placed in the balloon and reduced to fragments less than or equal to 1 mm from initial sizes of 4-24 mm. Human stones were then inserted in ex vivo porcine gallbladders in a controlled experiment and treated with the device. Ten out of 12 tests were completed within 30 s; one test required 49 s and one 105 s to achieve complete fragmentation. Blinded histological evaluation demonstrated that tissue abrasion caused by use of the device would not interfere with the diagnosis of unsuspected malignancy. Clinical trials have now commenced under the auspices of the hospital ethical committee.

Animals↗