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Biomedical subjects

J P Vandamme

Publications and source records attributed to J P Vandamme.

At least 19 recordsLinked to original sources

The blood supply of the stomach.

156 abdominal preparations were explored by arteriography, corrosion and dissection. The stomach is vascularized by four well-anastomosed main arteries: the arteria gastrica dextra and sinistra and the arteria gastroepiploica dextra and sinistra. Other important vessels include: the arteria gastroduodenalis, the arteriae gastricae breves for the upper half of the greater curvature, a posterior gastric artery (36%), an accessory left gastric artery (12%) and an arteria supraduodenalis. The main vessels give rise to some very specific collaterals, e.g. the omental arteries that may form an omental arcade (44%), supra- and infra-pyloric branches, retroduodenal branches, rami cardiaci, esophagei and tuberales and an accessory left hepatic artery. The gastroduodenal artery always arises at a fixed point.

Angiography↗

Systematisation of the arteries in the splenic hilus.

156 abdominal preparations were explored by arteriography, corrosion and dissection. Within the meanders of the splenic artery a basic pattern can be traced. The division of the artery can easily be summarized by introducing the term of a truncus lienogastroepiploicus. The short gastric arteries are always present, and usually they are longer and more important than may appear from their name. In nearly half of the preparations (52%) an artery for the extremitas lienalis posterior is found; an artery for the extremitas lienalis anterior is very exceptional. A posterior gastric artery can be identified (36%) but it must be distinguished from several other vessels. The arteria colli pancreatis (for the neck of the pancreas) is a constant vessel that may have a superior (usually arteria lienalis) or an inferior origin (arteria mesenterica superior). It commonly supplies the transverse pancreatic artery and often the prepancreatic arcade. The arteria corporis pancreatis, too, is a constant artery. The pancreatic tail is thoroughly irrigated by usually more than one arteria caudae pancreatis. An important part of the greater curvature is not accompanied by the left gastroepiploic artery, but is supplied by the arteriae gastricae breves.

Arteries↗

The branches of the celiac trunk.

156 abdominal preparations were explored by arteriography, corrosion and dissection. Classification of the celiac trunk becomes easy if one considers the trunk to be composed of three main stems: the splenic, the hepatic and the left gastric artery, other vessels being less important collaterals. Usually, the celiac trunk bifurcates into the splenic and the hepatic artery; the left gastric artery is a mobile vessel whose origin may slide between the aorta, all over the celiac trunk up to a trifurcation. The direction of the celiac trunk is influenced by the topography of the pancreatic neck and by the origin of the hepatic artery: if the celiac trunk is not the origin of the hepatic artery it is not directed to the right but to the left. It is the hepatic artery that pulls the celiac trunk to the right. Variations in the origin of the splenic artery are exceptional. In contrast to adults, the diameter of the hepatic artery in young children is larger than that of the splenic artery.

Angiography↗

Arcus paracolicus.

The paracolic arcade is the most important vessel for the blood supply of the colon. It can be compared with the felly of a wheel, whose spokes are the colic arteries. It is the immediate source of the colic supply and the most important way for collateral circulation between the colic arteries and even between the superior and inferior mesenteric arteries.

Arteries↗

Re-evaluation of the colic irrigation from the inferior mesenteric artery.

156 abdominal preparations were explored by arteriography, corrosion and dissection. The arteria mesenterica inferior (AMI) ends by bifurcating into the two arteriae rectales superiores. The key to the interpretation of the AMI is the recognition of an arteria colosigmoidea that gives off one or more rami sigmoidei. In the presence of an arteria or ramus colic. sin. access, usually from the superior mesenteric artery, the left colic artery is absent, atrophic or displaced. The sigmoid branches (usually three) arise from the colosigmoid, the left colic or the distal portion of the AMI. Usually, the last sigmoid artery gives branch to the rectosigmoid colon. The rectosigmoid artery arises from the AMI between arteria sigmoidea ima and the terminal bifurcation of the former. It may be replaced by the descending branch of the a. sigmoidea ima. They irrigate an extensive part of the anterior wall of the bowel.

Colon↗

A new look at the blood supply of the ileocolic angle.

87 ileocolic preparations are studied by means of postmortem arteriography combined with dissection and corrosion. The ileocolic stem is to be continued beyond the colic and ileal branches up to its division into the caecal branches. This allows to distinguish a long ileocolic trunk which is the direct origin of the different tributaries and which ends into one or both caecal arteries. An arteria colica dextra from the ileocolic artery cannot be supported. Many rules are established that govern the relations between the various collaterals, and several conclusions of theoretical and practical importance are made.

Angiography↗

Re-evaluation of the colic irrigation from the superior mesenteric artery.

156 abdominal preparations were explored by arteriography, corrosion and dissection. The ileocolic artery is the most constant collateral of the superior mesenteric artery. It provides a ramus colicus which is often confused with a true arteria colica dextra. The a. colica dextra, arising on the superior mesenteric artery, is found in only 13% of the abdominal preparations. The PNA 'a. colica media' covers a system of individually varying vessels: a. colica media, common stem of r. anguli coli and r. coli transversi; a. anguli coli, a. coli transversi; a. colica sinistra accessoria and a. coli transversi accessoria. Both mesenteric arteries may be linked by a intermesenteric arch (12%).

Colon↗

Severe and fatal reactions to rheomacrodex.

Primary idiosyncrasia against dextran does really exist and is to be taken into account. It may even be more frequent than is usually accepted because in many cases an other cause than the infusion may be obvious. The shock develops at the first milliliters of the infusion. When dextran is to be administered for the first time, a doctor is to be present and all equipment for resuscitation must be available. For any reaction occurring during the infusion, the dextran must be withdrawn.

Aged↗

One hundred elective resections of the left colon and rectum with unprotected manual anastomosis.

One hundred consecutive elective resections with hand suture of the left colon and rectum without a protective colostomy are reported. The absence of clinical fistulas, wound infections and abcesses indicates the safety and the feasability of this approach. There was a two per cent mortality rate. The article stresses the importance of a good suturing technique, good preparation, the judicious use of anti-anaerobic drugs, the use of plastic ring drapes and the changing of gloves, drapes and instruments before wound closure. The absence of leakage and of septic complications lowers dramatically the overall complication rate.

Adult↗