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Martin WALZ

Kliniken Essen-Mitte
Essen, Germany
MD
1.4K like
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Laparoscopic posterior retroperitoneoscopic adrenalectomy
In this video, Professor Martin Walz presents the main principles of laparoscopic retroperitoneoscopic adrenalectomy. The patient lies in a prone position with the adrenal gland being approached posteriorly beneath the 12th rib, thereby allowing for a direct access to the retroperitoneum and adrenal gland without the need for intra-abdominal organ mobilization. Carbon dioxide pressure and camera position play a key role for better exposure and imaging. High insufflation pressures in the retroperitoneal space can also reduce troublesome bleeding. This approach remains the best option with no blood loss and reduced postoperative pain, less morbidity, a shorter hospital stay, and an earlier return to normal activities.
Lecture
3 years ago
1501 views
101 likes
0 comments
14:34
Laparoscopic posterior retroperitoneoscopic adrenalectomy
In this video, Professor Martin Walz presents the main principles of laparoscopic retroperitoneoscopic adrenalectomy. The patient lies in a prone position with the adrenal gland being approached posteriorly beneath the 12th rib, thereby allowing for a direct access to the retroperitoneum and adrenal gland without the need for intra-abdominal organ mobilization. Carbon dioxide pressure and camera position play a key role for better exposure and imaging. High insufflation pressures in the retroperitoneal space can also reduce troublesome bleeding. This approach remains the best option with no blood loss and reduced postoperative pain, less morbidity, a shorter hospital stay, and an earlier return to normal activities.
Laparoscopic splenectomy
In this video, Professor Martin Walz provides an overview of laparoscopic splenectomy. Since the first laparoscopic splenectomy in 1991, the procedure has become increasingly precise. The main indications for laparoscopic splenectomy are hypersplenism, splenomegaly, and associated diseases. Splenomegaly (> 20-25cm or > 1,000g) is the main contraindication. Immunization is essential for splenectomy. The patient is either placed in a left decubitus position with a 45-degree rotation or in a right decubitus position with a 90-degree rotation. The main steps of laparoscopic splenectomy are briefly demonstrated in this video. Laparoscopic splenectomy is the gold standard in small tumors with lower blood loss, low morbidity and mortality with a shorter hospital stay.
Lecture
3 years ago
4634 views
230 likes
2 comments
19:41
Laparoscopic splenectomy
In this video, Professor Martin Walz provides an overview of laparoscopic splenectomy. Since the first laparoscopic splenectomy in 1991, the procedure has become increasingly precise. The main indications for laparoscopic splenectomy are hypersplenism, splenomegaly, and associated diseases. Splenomegaly (> 20-25cm or > 1,000g) is the main contraindication. Immunization is essential for splenectomy. The patient is either placed in a left decubitus position with a 45-degree rotation or in a right decubitus position with a 90-degree rotation. The main steps of laparoscopic splenectomy are briefly demonstrated in this video. Laparoscopic splenectomy is the gold standard in small tumors with lower blood loss, low morbidity and mortality with a shorter hospital stay.
LIVE INTERACTIVE SURGERY: laparoscopic left adrenalectomy: retroperitoneal access
Retroperitoneal adrenalectomy (posterior approach) provides a direct access to the adrenal gland, hence preventing the risk of injury to intraperitoneal organs. The retroperitoneoscopic approach shortens the mean operative time and it is critical in cases of pheochromocytoma. Consequently, it is the recommended treatment for pheochromocytoma. Blood loss and the convalescence period are also shortened with this approach. The surgical principles of retroperitoneal adrenalectomy according to Professor Martin Walz are as follows: ‘en bloc’ resection, start of dissection with the upper pole of kidney, lower pole of the adrenal gland next, control of the main adrenal vein without clips, and morcellation of the gland if necessary in a bag.
Surgical intervention
3 years ago
2185 views
184 likes
1 comment
39:46
LIVE INTERACTIVE SURGERY: laparoscopic left adrenalectomy: retroperitoneal access
Retroperitoneal adrenalectomy (posterior approach) provides a direct access to the adrenal gland, hence preventing the risk of injury to intraperitoneal organs. The retroperitoneoscopic approach shortens the mean operative time and it is critical in cases of pheochromocytoma. Consequently, it is the recommended treatment for pheochromocytoma. Blood loss and the convalescence period are also shortened with this approach. The surgical principles of retroperitoneal adrenalectomy according to Professor Martin Walz are as follows: ‘en bloc’ resection, start of dissection with the upper pole of kidney, lower pole of the adrenal gland next, control of the main adrenal vein without clips, and morcellation of the gland if necessary in a bag.
A laparoscopic right hemicolectomy with a primary vascular approach
Introduction:
We present the case of a 54-year-old male with a 5cm villous adenoma at the ileocaecal valve with a focus of invasive carcinoma. Previous attempts at endoscopic mucosal resection were unsuccessful.

Methods:
The set-up consisted of two 10/12mm ports (sub-umbilical and left iliac fossa) and three 5mm ports (right iliac fossa, supra-umbilical and epigastric). The primary vascular approach initially consists of identification, ligation and division of the vessels (ileocolic, right colic and right branch of the middle colic) at their origin, retroperitoneal mobilization of the mesocolon, taking down of the hepatic flexure and completion of the mobilization of the caecum and lateral attachments.

Conclusion:
The primary vascular approach to laparoscopic right hemi-colectomy is achievable.
Surgical intervention
7 years ago
11446 views
259 likes
0 comments
35:19
A laparoscopic right hemicolectomy with a primary vascular approach
Introduction:
We present the case of a 54-year-old male with a 5cm villous adenoma at the ileocaecal valve with a focus of invasive carcinoma. Previous attempts at endoscopic mucosal resection were unsuccessful.

Methods:
The set-up consisted of two 10/12mm ports (sub-umbilical and left iliac fossa) and three 5mm ports (right iliac fossa, supra-umbilical and epigastric). The primary vascular approach initially consists of identification, ligation and division of the vessels (ileocolic, right colic and right branch of the middle colic) at their origin, retroperitoneal mobilization of the mesocolon, taking down of the hepatic flexure and completion of the mobilization of the caecum and lateral attachments.

Conclusion:
The primary vascular approach to laparoscopic right hemi-colectomy is achievable.
Posterior approach to laparoscopic left adrenalectomy including virtual reality simulation
Since M. Gagner published the first case of a transperitoneal laparoscopic adrenalectomy in 1992, the laparoscopic adrenalectomy has gradually become the standard operation for removing adrenal tumors. Compared to a traditional adrenalectomy, a laparoscopic adrenalectomy has a number of advantages, including less blood loss, a shorter hospital stay, a quicker recovery, and fewer complications. There are many ways to approach the adrenal gland laparoscopically, such as by a lateral transperitoneal approach, anterior transperitoneal approach, lateral retroperitoneal approach, and posterior retroperitoneal approach. This video shows a posterior left adrenalectomy using virtual reality simulation.
Surgical intervention
8 years ago
1939 views
30 likes
0 comments
25:24
Posterior approach to laparoscopic left adrenalectomy including virtual reality simulation
Since M. Gagner published the first case of a transperitoneal laparoscopic adrenalectomy in 1992, the laparoscopic adrenalectomy has gradually become the standard operation for removing adrenal tumors. Compared to a traditional adrenalectomy, a laparoscopic adrenalectomy has a number of advantages, including less blood loss, a shorter hospital stay, a quicker recovery, and fewer complications. There are many ways to approach the adrenal gland laparoscopically, such as by a lateral transperitoneal approach, anterior transperitoneal approach, lateral retroperitoneal approach, and posterior retroperitoneal approach. This video shows a posterior left adrenalectomy using virtual reality simulation.