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34 O. V. Khullar and S. D. Force
43. Luketich JD, Alvelo-Rivera M, Buenaventura PO. Minimally invasive esophagectomy: outcomes in 222 patients. Ann Surg. 2003;238(4):486–94.
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Trotha KT Jansen M. Intrathoracic versus cervical anastomo­sis after resection of esophageal cancer: a matched pair analysis of 72 patients in a single center study. World J Surg Oncol. 2012;10:159.
46. Price TN, Nichols FC, Harmsen WS, Allen MS, Cassivi SD, Wigle DA, Shen KR, Deschamps C.
Two thousand transhiatal esophagecto-
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Allen MS, Miller DL, Deschamps C,
gical factors influence the outcome
Transhiatal Esophagectomy— Intraoperative Disasters
Mark B. Orringer
4
Introduction
In the mid-1970s, transhiatal esophagectomy (THE) without thoracotomy and the cervical esophagogastric anastomosis (CEGA) was redis­covered [1]. Prior to that time, the operation was seldom used, primarily in patients undergoing a laryngopharyngectomy for carcinoma and esoph­ageal replacement with stomach [2, 3]. THE cir­cumvented the leading complications associated with a traditional transthoracic esophageal resec­tion and intrathoracic esophagogastric anastomo­sis—(1) respiratory insufficiency associated with a combined thoracoabdominal operation and (2) mediastinitis from an intrathoracic esophageal anastomotic leak. Detractors of the operation argued that the “blind” mediastinal dissection would inevitably result in uncontrollable hemor­rhage, and inability to do as complete a mediasti­nal lymph node dissection as with the traditional open approach made it an unacceptable operation from an oncologic standpoint. With now more than 30 years of experience with THE, these latter concerns have not been realized, and numerous reports in the surgical literature have documented the relative safety and efficacy of this approach and with survival comparable to that achieved with transthoracic esophagectomy for carcinoma [48]. As a result, the author regards THE and
M. B. Orringer () Section of Thoracic Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA e-mail: morrin@med.umich.edu
CEGA as the approach of choice in patients re­quiring esophageal resection and reconstruction for both benign and malignant diseases [9].
As is the case with every major operation, a successful outcome is strongly influenced by careful patient selection and a highly organized and consistent intraoperative approach. Intraop­erative “disasters,” primarily hemorrhage and airway tears, associated with THE are fortunately rare and are often retrospectively predictable by assessing the appropriateness of patient selection for the operation. In our report of 2007 THEs, the operation was possible in 98 % of those in whom it was undertaken [9]. However, there were four (0.19 %) intraoperative deaths from uncontrol­lable hemorrhage occurring during transhiatal mobilization of the esophagus from the posterior mediastinum. Inordinate intraoperative bleeding (> 4000 ml) occurred in 8 additional patients: 4 intramediastinal due to either a torn azygos vein (3) or large prevertebral collateral vein (1); 3 in- traabdominal due to portal hypertension from cirrhosis (2) or splenic vein injury (1); and 1 from a right ventricular laceration during chest tube insertion. What was popularized 30 years ago as a “blunt esophagectomy” has become much more of a controlled mediastinal dissection through the hiatus, clamping vascular esophageal
attachments with 13ʺ long right-angle clamps,
and dividing and ligating them through the hia­tus. Thus, the average intraoperative blood loss has fallen from a median of 510 ml in those op­erated upon between 1976 and 1998 to 300 ml in those operated upon between 1998 and 2006
T. M. Pawlik et al. (eds.), Gastrointestinal Surgery, DOI 10.1007/978-1-4939-2223-9_4, © Springer Science+Business Media New York 2015
35
36 M. B. Orringer
Table 4.1 Intraoperative blood loss with transhiatal esophagetcomya (2007 patients). (Reproduced with permission from [14] © Wolters Kluwer 2005)
Group I (1976−1998) Group II (1998–2006)
No. Range (cc) Mean (cc) No. Range (cc) Mean (cc) Benign 276 100–4000 795 203 50–2000 366 Carcinoma
Total 1054
a
Excludes 4 intraoperative deaths, 3 from Group I and 1 from Group II, 2 with benign disease and 2 with carci-
noma, and 8 surviving patients, 6 in Group I and 2 in Group II, who experienced inordinate intraoperative blood loss ( > 4000 cc.)
778
35–3700 635 35–4000 677 942 15–3100 368 (p ≤ 0.0001)
739
15–3100 368
(p < 0.0001) (Table 4.1). Overall, a thoracotomy was performed to control mediastinal bleed­ing during the esophagectomy in nine patients (< 1 %) and was successful in five.
Both massive intraoperative bleeding and a tracheal tear complicate < 1 % of all THEs. Nei­ther of these events is commonly mentioned in review articles on the operation. Because these are such relatively uncommon occurrences, a periodic intraoperative “fire drill”—“walking through” the steps of controlling untoward me­diastinal bleeding or an airway tear encountered during a THE, including indications for a thora­cotomy and selection of the appropriate side— may prove lifesaving if these “disasters” occur.
Indications and Contraindications toTHE
The surgeon considering a THE must be keenly aware of clinical “red flags” that may portend major intraoperative hemorrhage or injury to the adjacent airway. In the majority of patients re­quiring an esophageal resection and reconstruc­tion, THE and a CEGA are applicable. In the last reported series of 2007 THEs by the author and his associates, there were 1525 (76 %) operations for carcinoma and 482 (24 %) for benign dis­ease (Table 4.2) [9]. In patients with achalasia, the common indications for esophageal resec­tion were a failed prior esophagomyotomy, often with a subsequent reflux stricture, and a tortuous megaesophagus (> 6 m) [10]. Technical features unique to achalasia and increasing the likelihood of bleeding during a THE include (1) adherence of the myotomized segment to the descending thoracic aorta; deviation of the megaesophagus
into the right chest; (2) larger than usual aortic esophageal arteries; and (3) a wider than usual cervical esophagus, which is more difficult to mobilize and encircle. While the need for an esophagectomy for a reflux stricture has been dramatically reduced by the advent of proton pump inhibitors (PPIs), the number of failed laparoscopic antireflux operations is increas­ing, many after multiple procedures, or with peri­hiatal mesh, often with erosion into the esopha­gus. In the author’s experience, the likelihood of achieving long-term reflux control and/or relief of dysphagia after two or more prior antireflux operations is so low that esophageal resection and reconstruction are the “best” alternative if a reoperation is advised. However, the decision to resect the esophagus for benign disease should not be made lightly. Complaints of occasional reflux or intermittent dysphagia associated with a recurrent hiatal hernia, for example, may be less problematic in the long run than an esopha­geal anastomotic stricture or chronic dumping syndrome which may follow an esophagectomy. With mesh erosion into the esophagus, there is little option other than an esophageal resection. The distal periesophageal and esophagogastric junction inflammatory reaction associated with a mesh erosion may be extensive and result in bleeding as the inflammatory mass is mobilized away from the adjacent aorta. Parenthetically, although the mesh erosion is at the esophago­gastric junction, a THE and CEGA is a better option than a limited distal esophagectomy and low intrathoracic esophagogastric anastomo­sis, particularly in an infected field due to local sepsis from the erosion. This latter operation in­sures lifelong gastroesophageal reflux and should never be done for benign disease. The author has
Table 4.2 Indications for transhiatal esophagectomy (2007 patients). (Reproduced with permission from [14] Wolt- ers Kluwer 2005)
Number (%)
Patients Group I-1063 pts Group II-944 pts Total-2007
1976–1998 1998–2006 1976–2006 Benign conditions 278 (26 Neuromotor dysfunction 92 (33 %) 47 (23 %) 139 (29 %) Achalasia 69 44 113 Spasm/dysmotility 21 3 24 Scleroderma 2 0 2 Stricture 74 Gastroesophageal reflux 40 7 47 Caustic ingestion 18 6 24 Radiation 4 2 6 Other 12 6 18 Barrett’s mucosa with high-grade dysplasia 53 Recurrent gastroesophageal reflux 21 (8 %) 6 (3 %) 27 (6 %) Recurrent hiatus hernia 14 (5 %) 14 (7 %) 28 (6 %) Acute perforation 15 (5 %) 9 (5 %) 24 (5 %) Acute caustic injury 5 (2 %) 1 (1 %) 6 (1 %) Other 4 (1 %) 16 (8 %) 20 (4 %)
Carcinoma of the intrathoracic esophagus Site 785 (74 %) 740 (78 %) 1525 (76 %)
Upper third 35 (4 %) 16 (2 %) 51 (3 %) Middle third 164 (21 %) 63 (9 %) 227 (15 %) Lower third and/or cardia
a
Includes pathologic gastric carcinomas involving the cardia and lower esophagus
a
%) 204 (22 %) 482 (24 %)
%) 21 (10 %) 95 (20 %)
(27
%) 90 (44 %) 143 (30 %)
(19
586 (75 %) 661 (89 %) 1247 (82 %)
374 Transhiatal Esophagectomy—Intraoperative Disasters
recently learned of such a patient who developed a low esophagogastric anastomotic leak follow­ing a limited transabdominal resection for mesh erosion, survived this, and presented more than 2 years later with an aorto-esophageal fistula at the site of the prior anastomotic leak—an extremely rare cause of late major hemorrhage associated with an intrathoracic esophageal anastomosis. This was controlled with an endovascular aortic stent.
While in the current experience of the author and his associates with more than 3000 THEs, this operation has been possible in 98 % of those requiring an esophagectomy, and the safe surgeon must recognize that there are contraindications to proceeding with the procedure. Patients with upper and mid-third esophageal cancers invading the adjacent airway (proven with bronchoscopy and biopsy, which should always be performed as a part of the preoperative evaluation) are not
candidates for a THE. When an esophageal tumor is located in the mid-esophagus in proximity to the carina and main bronchi, at approximately 25 cm from the upper incisor teeth at esopha­goscopy, a more difficult transhiatal esophageal mobilization than with a distal carcinoma is usu­ally encountered, and the risk of an airway tear is increased. Those with histologically documented stage IV disease (distant metastasis) are similarly not candidates for resection; this includes the pa­tient found to have “just” a 1-cm liver metastasis at the time of abdominal exploration. Systemic disease cannot be cured with local therapy (i.e., surgery). Without question, the single most im­portant contraindication to proceeding with a THE is the surgeon’s assessment of esophageal mobility on palpation through the hiatus. Fixa­tion of the esophagus or its contained tumor to adjacent mediastinal structures can result in an untoward bleeding from a torn aorta or azygos
38 M. B. Orringer
vein or a tracheal tear during an attempted THE. Surgical judgment is critical in such situations. Prior radiation therapy does not preclude a THE, but the technical difficulty of mobilizing the esophagus may be greatly increased.
Preoperative Risk Factors for Bleeding with a THE
While it may seem obvious, a careful history to rule out bleeding tendencies or a family history of clotting disorders should always be obtained. The patient population requiring an esophagec­tomy is often older, and a number of conditions more common in this group result in the need for anticoagulation and platelet inhibitors, which may result in untoward bleeding with a THE un­less carefully monitored and discontinued for an appropriate time before surgery. Three of the most frequent indications for anticoagulation among these patients are chronic atrial fibrilla­tion, coronary artery stents, and prior thrombo­embolic disease, particularly that in association with neoadjuvant chemotherapy and radiation therapy for esophageal carcinoma [1113].
A history of prior esophageal surgery, par- ticularly an esophagomyotomy, which may result in the exposed esophageal submucosa adher­ing to the adjacent descending thoracic aorta, may portend a more difficult esophagectomy; especially with reoperations, bleeding from the spleen may occur during the upper abdominal gastric mobilization as left upper quadrant adhe­sions are divided. It has long been my practice in these operations to confront the gastric fundus mobilization and division of the high short gas­tric vessels as soon as possible after opening the abdomen while the surgical team is at its freshest and inadvertent splenic injury due to less likely retraction. As the dissection is carried superi­orly through the diaphragmatic hiatus and the esophageal mobilization commenced, especially in those who have had a prior esophagomyotomy, narrow Deaver retractors should be placed into the hiatus and sharp dissection of the esophagus from the aorta under direct vision carried out. Blunt dissection of the esophagus adherent to the
aorta may have dire consequences. In the patient with a megaesophagus of achalasia, deviation of the “sigmoid” esophagus into the right chest is common, and not only dissecting into the right chest but also beneath the azygos vein may be hazardous.
The presence of mediastinal calcification due to old granulatous disease on the preopera­tive chest radiograph and CT scan, particularly in the subcarinal region, may be the harbinger of potential bleeding during the transhiatal esopha­geal mobilization in this area. While such calci­fication per se does not preclude a THE, if the surgeon encounters increased difficulty mobiliz­ing the subcarinal esophagus, there must be a low tolerance to convert to an open thoracotomy and free the esophagus from the mediastinum under direct vision.
Portal hypertension is a relative contra­indication to esophagectomy and has been re­sponsible twice for rare massive intraoperative abdominal bleeding in our patients. The author regards the presence of ascites from liver disease as an absolute contraindication to esophagecto­my. Even if untoward bleeding does not occur, venous congestion of the mobilized stomach due to portal hypertension may have devastating con­sequences if an esophagogastric anastomosis is attempted.
Finally, it has been the personal observation of the author that obese, “soft,” often elderly women have experienced the preponderance of intraoperative massive bleeding during a THE, perhaps being more prone to an azygos vein tear because of general tissue laxity. Such a body hab­itus or tissue strength does not preclude a THE, but should alert the surgeon to the need to pro­ceed cautiously.
General Considerations
The patient is positioned supine, the neck ex­tended by placing a small rolled sheet under the scapulae, and the head turned to the right and supported on a soft head ring. The opera­tive field is wide and includes the skin of the neck, chest, and abdomen from the angle of the
394 Transhiatal Esophagectomy—Intraoperative Disasters
mandible superiorly to the pubis inferiorly and anteriorly to both mid-axillary lines. There must be adequate room to place a chest tube low in the anterior axillary lines as indicated. Two suc­tion lines with Yankauer suckers are routine, one near the patient’s head and the other at the lower end of the table. After the abdominal phase of the operation and before beginning the transhiatal esophageal mobilization, the Yankauer sucker at the head of the table is removed and replaced with a longer 28 Fr Argyle Saratoga sump cath­eter. This catheter is inserted into the posterior mediastinum through the cervical wound after each phase of the esophageal mobilization (pos­terior, anterior, and lateral) and the mediastinum inspected through the hiatus to establish that ex­cessive bleeding is not occurring. As a general rule, the operation commences with mobilization of the stomach through the upper midline abdom­inal incision. Exposure and division of the high short gastric vessels are carried out first, when the operative team is fresh, and untoward traction on the left upper quadrant retractor with resultant injury to the spleen is less likely to occur. Splenic injury necessitating a splenectomy has occurred in approximately 4 cially in those who have had prior fundoplica­tions that must be taken down if the stomach is going to serve as an esophageal replacement and reach to the neck for a construction of a CEGA. The need for a splenectomy for control of bleed­ing is uncommon, but when required, especial­ly in a “re-do” abdomen, care must be taken to preserve the integrity of the right gastroepiploic artery, the primary blood supply of the gastric esophageal substitute. In patients undergoing a THE for a distal esophageal Barrett’s adeno­carcinoma occurring in association with a large paraesophageal hiatal hernia, care must be taken to deliver the greater curvature of the stomach out of the hiatus before commencing division of what appears to be the high short gastric vessels. It is easy in such patients to mistakenly divide the right gastroepiploic artery erroneously felt to be a short gastric vessel.
% of our THE patients,
espe-
Anesthetic Considerations
An epidural catheter for postoperative analgesia, a standard endotracheal tube, and a Foley catheter are routinely used. As indicated above, the patient is positioned supine. Two large bore peripheral intravenous lines and a radial artery catheter for continuous monitoring of the blood pressure are placed and well secured, and the arms are padded and placed at the sides. Although the anesthetist may feel uncomfortable about not having direct access to the IVs intraoperatively, this position­ing gives the surgeon and his assistant optimal access to the neck, chest, and abdomen from both sides of the table. To avoid prolonged hypoten­sion from cardiac displacement, the surgeon and the anesthesiologist both watch the monitored blood pressure together while the surgeon’s hand is in the posterior mediastinum performing the transhiatal esophageal mobilization. Intraopera­tive monitoring of urinary output is important in these patients with impaired swallowing, many of whom have had preoperative bowel prep, as hypotension due to low intravascular volume is common.
During performance of the transhiatal esopha­geal mobilization, constant communication be­tween the surgeon and the anesthetist is crucial. As the hand is advanced upward into the medi­astinum through the diaphragmatic hiatus, both the surgeon and the anesthetist must monitor the radial artery blood pressure in order to minimize untoward hypotension associated with displace­ment of the heart by the surgeon’s hand. If the surgeon’s hand is kept well posteriorly against the spine, hypotension from anterior displace­ment of the heart is less. After 5–10 s of hypoten­sion in the patient who is not hypovolemic, the blood pressure should quickly return to the nor­mal range within seconds of removing the hand from the mediastinum. This is NOT the time for the anesthesiologist to be correcting hypotension with pressor agents. Persistent hypotension after the surgeon’s hand is withdrawn from the mediastinum signals either the need for volume replacement or unrecognized mediastinal hemor­rhage, not the need for pressors.
40 M. B. Orringer
Conduct of the Operation
It cannot be overemphasized that THE is not a random wrenching of the esophagus from the posterior mediastinum. The operation has com­ponent parts that have been well described else­where [14] and will only be briefly mentioned here:
1. the abdominal phase: exploration, assessment of the suitability of the stomach as an esoph­ageal replacement, gastric mobilization, a Kocher maneuver, pyloromyotmy, and inser­tion of a feeding jejunostomy tube;
2. the cervical phase: mobilizing and encircling the cervical esophagus, blunt dissection of the upper thoracic esophagus in the superior me­diastinum;
3. the mediastinal dissection of the esophagus (to be discussed further below);
4. preparation of the gastric conduit, transposi­tion through the posterior mediastinum, and abdominal wound closure;
5. the cervical esophagogastric anastomosis.
Considerations about potential major intraop­erative bleeding or airway injury are related to the mediastinal dissection of the esophagus. The dissection begins in the abdomen through the diaphragmatic hiatus as the surgeon palpates the esophagus to assess its mobility. Fixation to the spine, descending thoracic aorta, or the air­way is a “red flag” that a persistent attempt at resecting the esophagus transhiatally may end in disaster. In the typical case, however, the surgeon inserts one hand through the diaphragmatic hia­tus posterior to the esophagus. This hand is ad­vanced superiorly along the prevertebral fascia, constantly against the spine to minimize anterior displacement of the heart and untoward hypo­tension (Fig. 4.1). Simultaneously, the encircled cervical esophagus is retracted anteriorly as a “sponge-on-a-stick” is advanced through the cer­vical incision and down into the superior medi­astinum dissecting the esophagus free from the prevertebral fascia. Eventually the stick sponge being advanced downward into the mediastinum from “above” meets the fingers inserted through the hiatus from “below,” and the first phase of the posterior mediastinal “tunnel” is created
Fig. 4.1 The transhiatal esophageal mobilization begins posteriorly, the surgeon’s hand inserted through the hiatus with the volar aspect of the fingers sweeping the esopha­gus away from the prevertebral fascia and a similar pos­terior dissection of the upper thoracic esophagus through the cervical incision. (Reproduced with permission from [9] © Elsevier)
(Fig. 4.2). The 28 French Argyle Saratoga sump catheter is inserted through the cervical incision into the mediastinum along the spine, is used to evacuate blood and assess for unusual bleeding, and is then removed. The posterior dissection of the esophagus is generally through relatively avascular tissue planes.
Anterior dissection of the esophagus through the hiatus is a mirror image of the posterior dis­section. The esophagogastric junction is retracted inferiorly by gentle downward traction on the mobilized stomach. The surgeon’s hand is placed against the anterior surface of the esophagus palm downward and is advanced superiorly into the mediastinum, gently dissecting the esophagus from the posterior pericardium and then the ca­rina (Fig. 4.3). In the neck, the cervical esopha­gus is retracted superiorly and laterally as two fingers dissect progressively downward along the anterior surface of the esophagus, mobilizing it away from the posterior membranous trachea (Fig. 4.4). The force of the dissection, no matter
414 Transhiatal Esophagectomy—Intraoperative Disasters
Fig. 4.2 A “half-sponge-on-a-stick” is advanced down- ward through the cervical incision along the prevertebral fascia until it can be palpated by the fingers inserted from “below” through the hiatus, thereby establishing the first portion of the posterior mediastinal tunnel. (Reproduced with permission from [9] © Elsevier)
how gentle, most be directed posteriorly to avoid a tear of the airway. When the fingers inserted through the cervical wound meet those inserted through the hiatus, the “anterior tunnel” is com­plete, and the Saratoga sump catheter is again in­serted to monitor for untoward bleeding and then removed. Lateral periesophageal attachments are
divided between long (13ʺ) right-angle clamps
inserted through the hiatus and ligated, minimiz­ing the “blunt” dissection.
With the anterior and posterior esophageal at­tachments now divided, the cervical esophagus is progressively elevated out of the neck wound as the lateral attachments of the upper thoracic esophagus are swept away by blunt dissec­tion (Fig. 4.5). This results in an approximately 5–8 cm length of circumferentially mobilized upper thoracic esophagus. The hand-inserted palm downward through the diaphragmatic hia­tus is advanced upward along the anterior surface
Fig. 4.3 Anterior dissection of the esophagus is per- formed as a “mirror image,” this time with the volar as­pects of the finger against the anterior esophageal wall. The posterior membranous trachea is vulnerable to injury as the esophagus is mobilized away from the airway from “below” and “above.” (Reproduced with permission from [9] © Elsevier)
of the esophagus until the circumferentially mobilized upper thoracic esophagus is identi­fied by palpation (Fig. 4.6). The esophagus is “trapped” against the spine by the fingers, and with a progressive downward “raking” motion, the remaining lateral esophageal attachments and vagal branches are gently avulsed (Fig. 4.7). Larger vagal branches can be delivered down­ward until visible through the hiatus and divided using a long right-angle clamp and electrocautery (Fig. 4.7 inset). With mobilization of the thoracic esophagus now completed, the cervical esopha­gus is elevated several centimeters out of the neck wound, the cervical esophagus divided with a stapler (Fig. 4.8), and the esophagus drawn downward and out of the mediastinum by gentle traction on the stomach.
While it is tempting at this point to “admire” the resected esophagus and for all present at the table to palpate a tumor if present, this should be resisted. As soon as the esophagus is out of the posterior mediastinum, a Deaver retractor is
42 M. B. Orringer
Fig. 4.4 The attachments between the trachea and esoph- agus are generally flimsy and avascular. As the dissection proceeds, the fingers must exert their force posteriorly, away from the membranous trachea, to avoid a tear. (Re­produced with permission from [9] © Elsevier)
Fig. 4.5 After establishing the anterior and posterior esophageal “tunnels,” the additional mobility of the esoph­agus allows it to be elevated out of the cervical wound for several centimeters by one finger “hooked” beneath it as the index finger of the opposite hand sweeps the lateral esophageal attachments aside. The upper thoracic esopha­gus is thus entirely circumferentially mobilized and is re­leased back down into the upper mediastinum for the next phase of the esophageal mobilization. (Reproduced with permission from [9] © Elsevier)
inserted into the hiatus and an inspection made for unusual bleeding and entry into one or both pleural cavities (requiring chest tube placement). Routinely, one or two large abdominal lapa­rotomy pads are packed through the hiatus into the mediastinum with long forceps, and while protecting the recurrent laryngeal nerve in the cervical wound, two narrow thoracic packs are advanced downward into the superior medias­tinum against the packs placed from below. All packs placed into the mediastinum through either the abdominal or thoracic incisions are “tagged” with a hemostat to avoid inadvertent intraopera­tive loss and an incorrect count at the end of the case. Once the mediastinum has been packed to allow both pressure and natural hemostatic mechanisms to control any oozing that might be present, and any required chest tubes have been inserted in the appropriate anterior axillary lines and connected to drainage, attention can then
be turned to removing the esophagus and upper stomach and fashioning the gastric conduit.
Bleeding Scenarios During THE
In the rare situation in which sudden unex­plained, prolonged severe hypotension occurs
during with the esophageal mobilization, even after the surgeon removes his/her hand from the posterior mediastinum, unrecognized bleeding must be suspected. If there is no sign of exces­sive bleeding from the hiatus or the cervical in­cision, bilateral 28 French chest tubes should be placed quickly low in the anterior axillary lines, advanced to the apices, connected to suction, and an assessment made for internal bleeding into a chest cavity by evaluating chest tube output. Intravascular volume replacement is achieved through two large bore peripheral IVs placed routinely in these operations. If on retraction of
434 Transhiatal Esophagectomy—Intraoperative Disasters
Fig. 4.7 Lateral esophageal attachments and smaller vagal fibers are avulsed by a downward “raking” motion of the fingers that are kept against the spine. Inset—More substantial vagal fibers can be pulled downward until vis­ible through the retracted hiatus and divided using a long right-angle clamp and electrocautery. (Reproduced with permission from [9] © Elsevier)
Fig. 4.6 The hand inserted through the diaphragmatic hiatus is advanced superiorly behind the trachea until the segment of completely circumferentially mobilized upper thoracic esophagus can be identified by palpation and “trapped” against the spine between the index and middle fingers. (Reproduced with permission from [9] © Elsevier)
the hiatus and inspection of the mediastinum, it is determined that appreciable “high” mediastinal bleeding is occurring and draining into the chest through an opening in the pleura (generally on the right and from a torn azygos vein), the posterior mediastinum should be packed quickly through the hiatus with two large laparotomy packs from “below” and two narrow thoracic packs placed behind the esophagus through the cervical wound (Fig. 4.9) (The recurrent laryngeal nerve in the tracheoesophageal groove is protected with the fingers as the packing is carried out.) (Fig. 4.9 inset). The abdomen is quickly closed with 4–5
through and through No. 2 sutures and the inci­sion covered with an adhesive surgical drape (Fig. 4.10 inset). Similarly, the cervical wound is quickly closed with a running nylon suture and covered with an adhesive surgical drape. The pa­tient is turned to the left side, positioned and pad­ded for a right posterolateral thoracotomy. The chest is entered through a fifth intercostal space incision and the bleeding site identified and con­trolled (usually by ligating and suture-ligating the torn azygos vein). Exposure may be facilitated by palpating the carina and having the anesthesiolo­gist advance the endotracheal tube as it is guided into the left mainstem bronchus by the surgeon’s fingers. Single lung ventilation of the left lung can then be instituted. If the esophagus has not been removed yet, the esophageal mobilization is completed. The patient is then turned supine once again, positioned as before, and the esopha­geal replacement with the stomach completed