Paradoxical hemodynamic instability complicating pericardial window surgery for cardiac tamponade in a cancer patient

Paradoxical hemodynamic instability is defined as unexpected hemodynamic compromise that develops in a patient after pericardial fluid drainage. The overall incidence of the condition is about 5%, and it has a high in-hospital mortality rate. The condition has been reported to occur regardless of the approach that is used to drain the fluid or the underlying cause of the disease. The pathophysiology of paradoxical hemodynamic instability and the appropriate intervention are not very clear, and further studies are needed to identify appropriate preventive measures.We report a rare manifestation of paradoxical hemodynamic instability in a 65-year-old woman who had a history of stage IV lung cancer. She presented with a one-week history of pleuritic chest pain and shortness of breath on exertion. Echocardiography revealed a large circumferential pericardial effusion with right atrial and ventricular collapse during diastole, suggesting a compressive effect of the pericardial fluid; however, left ventricular systolic function was well preserved. The patient underwent the scheduled creation of a subxiphoid pericardial window. Immediately after the pericardial fluid was evacuated, her heart began to beat more vigorously, but this was abruptly followed by an episode of asystole. Pacing and medical therapy were unsuccessful in preventing repeated episodes of asystole, and the patient died.To our knowledge, this is the 2nd report of unexpected asystole after the creation of a subxiphoid pericardial window, and it is the first report of a takotsubo-like contractile pattern associated with paradoxical hemodynamic instability.

Pericardial effusions in the cancer population: prognostic factors after pericardial window and the impact of paradoxical hemodynamic instability

OBJECTIVE

In the cancer population, pericardial effusions are a common and potentially life-threatening occurrence. Although decompression benefits most patients, paradoxical hemodynamic instability (PHI) develops in some, with hypotension and shock in the immediate postoperative period. This study examines paradoxical hemodynamic instability after pericardial window and identifies prognostic factors in patients with cancer who are treated for pericardial effusion.

METHODS

Retrospective review of 179 consecutive pericardial windows performed for pericardial effusion in a tertiary cancer center over a 5-year period (January 2004 through March 2009). Demographic, surgical, pathologic, and echocardiographic data were analyzed for the end points of paradoxical hemodynamic instability (pressor-dependent hypotension requiring intensive care unit admission) and overall survival.

RESULTS

The most common malignancies were lung (44%), breast (20%), hematologic (10%), and gastrointestinal (7%). Overall survival for the group was poor (median, 5 months); patients with hematologic malignant disease fared significantly better than the others (median survival 36 months; P = .008). Paradoxical hemodynamic instability occurred in 19 (11%) patients. These patients were more likely to have evidence of tamponade on echocardiogram (89% vs 56%; P = .005), positive cytology/pathology (68% vs 41%; P = .03), and higher volume drained (674 mL vs 495 mL; P = .003). Overall survival was significantly shorter in those in whom paradoxical hemodynamic instability developed (median survival 35 vs 189 days; hazard ratio = 3; P < .001), and the majority of them (11/19, 58%) did not survive their hospitalization.

CONCLUSIONS

Postoperative hemodynamic instability after pericardial window portends a grave prognosis. Evidence of tamponade, larger effusion volumes, and positive cytologic findings may predict a higher risk of paradoxical hemodynamic instability and anticipate a need for invasive monitoring and intensive care postoperatively.

Iatrogenic intrapericardial diaphragmatic hernia diagnosed by cardiovascular magnetic resonance

Intrapericardial diaphragmatic hernias are very uncommon and are most typically caused by high-force blunt trauma. Other iatrogenic causes such as prior surgical formation of a pericardial window have been described, but are exceedingly rare. We present a case of an intrapericardial diaphragmatic hernia in a patient with a prior pericardial window in which the diagnosis was unclear using conventional imaging modalities, but was established using cardiovascular magnetic resonance.

Thorough clinical investigation of low cardiac output syndrome after subxiphoid pericardiostomy

The paradoxical hemodynamic response after surgical or catheter pericardial drainage for cardiac tamponade is an infrequent complication. This case report describes this occasional ominous consequence of surgical pericardial decompression and suggests possible physiological explanations of rapidly progressive heart failure and death.

Successful Repair of a Diaphragmatic Hernia Through a Pericardial Window with Acellular Dermal Matrix

A successful placement of a transabdominal pericardial window is associated with diaphragmatic hernia. In this paper, we present the case of a 5-month-old ex-31-weeks-premature baby who developed a symptomatic diaphragmatic hernia following a chronic pericardial effusion who was treated successfully with a laparoscopic transabdominal pericardial window. Laparoscopy and a pericardial window were used to manage the symptomatic effusion that developed following a bilateral thoracotomy and median sternotomy for the patient's massive hygroma. The patient was followed before and after pericardial drainage with a serial examination, chest radiography, and echocardiography. In addition, computerized tomography was also used for long-term follow-up following the repair of the hernia. An acellular dermal matrix was utilized for patching the hernia with a laparotomy. The abdominal approach in both operations offered direct access to the pericardial space and hernia, thereby avoiding previously operated thoraces. A subsequent follow-up at 9 months following the creation of the window suggested a recurrent tamponade physiology. Plain radiographs and an echocardiogram showed herniation into the pericardial sac. The hernia was operatively reduced and repaired with an acellular dermal matrix. Recovery and subsequent followup at 1 year revealed no hernia, full symptom resolution, and no recurrence of the pericardial effusion. A pericardial window is an effective approach for the management of chronic pericardial effusion. Diaphragmatic herniation through a pericardial window can be successfully repaired with an acellular dermal matrix.

Comparative study of subxiphoid versus video-thoracoscopic pericardial "window"

BACKGROUND

It remains undefined whether surgical subxiphoid drainage or thoracoscopic pericardial "window" is the optimal operative approach to pericardial effusion. We hypothesized that the true window into the pleural space created by the latter might improve the duration of freedom from recurrent effusion.

METHODS

We conducted a retrospective chart review of indications, preoperative and intraoperative variables, morbidity, recurrence, and survival.

RESULTS

Fifty-six patients underwent the subxiphoid procedure and 15 underwent the thoracoscopic procedure. Echocardiographic evidence of tamponade was present before 8 of 10 thoracoscopic procedures (80%) and 43 of 56 subxiphoid procedures (81%) for which descriptions of hemodynamics were available. In addition, non-pericardial procedures were performed in 10 (67%) and 18 (32%) patients, respectively (p = 0.020). Anesthesia time was longer at thoracoscopy (117.1 +/- 32.4 vs 81.1 +/- 25.5 minutes; p < 0.001). Procedural morbidity was higher after thoracoscopy (4 [27%] vs 1 [2%]; p = 0.006), but was generally minor. Hospital mortality tended to be higher after the subxiphoid procedure (7 [13%] vs 0 [0%]; p = 0.332), but none of the deaths was procedure-related. Follow-up was complete for 65 patients (92%). Recurrence occurred in 1 thoracoscopy patient (8%) and 5 subxiphoid patients (10%) (p = 1.000). Mean time to recurrence by Kaplan-Meier analysis trends were longer after thoracoscopy (36.1 vs 11.4 months; p = 0.16), and multivariate analysis identified the thoracoscopic approach as an independent predictor of freedom from recurrence (relative risk, 0.41; p = 0.014).

CONCLUSIONS

Operative time and minor procedural morbidity are higher with thoracoscopic pericardial window, but long-term control of effusion seemed to be better than after subxiphoid surgical drainage.

Massive intrapericardial herniation of stomach following pericardial window

Herniation of intra-abdominal contents into the pericardial cavity is rare. We describe one such case occurring after creation of a pericardioperitoneal window for drainage of a pericardial effusion. The diagnosis of an intrapericardial hernia should be considered in patients presenting with gastrointestinal and/or cardiorespiratory symptoms following surgical procedures involving the diaphragm.

Occult cardiac lymphoma presenting with cardiac tamponade

Subxiphoid pericardiostomy is the procedure of choice for treatment of a pericardial effusion with tamponade. We report a case in which this procedure not only failed to reveal the presence of an occult malignancy, but also resulted in a recurrent symptomatic effusion.

Sudden death with malignant hemangioendothelioma originating in the pericardium--a case report

The authors report a rare case of a malignant hemangioendothelioma (MH) originating in the pericardium. In this case, a metastatic skin lesion was found first, and subsequently the existence of a primary cardiac lesion was confirmed. Generally, primary cardiac tumors grow slowly, and the prognosis of MH is relatively good. In this case, however, the patient died suddenly during the creation of a pericardial window for drainage. An autopsy showed that the MH originated from a pericardial lesion in the right atrium.

Teardrop sign: echocardiographic features in cardiac herniation

Cardiac herniation through an acquired pericardial defect is potentially fatal. Typically, symptoms manifest within days of a surgical procedure. We describe a patient with late ventricular herniation after surgical formation of an apical pericardial window.

VATS-guided epicardial pacemaker implantation. Hand-sutured fixation of atrioventricular leads in an experimental setting

BACKGROUND

In neonates and infants epicardial stimulation may be preferred to endocardial stimulation because of growth-associated lead problems and the risk of vascular complications associated with transvenous electrodes. This study analyzes the feasibility of atrioventricular implantation of a new epicardial lead using the video-assisted thoracic surgical (VATS) technique in an animal model.

METHODS

Bipolar steroid-eluting epicardial leads were implanted in seven young white pigs. In five animals bipolar atrial and ventricular pacing leads (n = 10) were inserted and fixed by the VATS technique, while two animals served as controls and underwent implantation through anterolateral thoracotomy. Surgical feasibility, pacing, and sensing thresholds of the leads as well as hemodynamic parameters during pacing were studied. Histological changes beneath the electrodes were evaluated 1 week after the implantation.

RESULTS

All animals survived the pacemaker lead implantation. One animal which underwent thoracotomy died because of irreversible ventricular fibrillation induced by rapid ventricular pacing. One animal in the VATS group exhibited intraoperative herniation of the heart through the pericardial window. All animals with left-sided VATS implantations demonstrated good individual pacing and sensing threshold values. The mean cardiac output was 1.6 times higher during AAI-mode pacing as compared to VVI-mode pacing at a heart rate of 140/min. One animal died postoperatively due to respiratory failure. No displacements of the pacemaker leads were observed in the survivors.

CONCLUSION

While VATS-guided implantation of epicardial, atrial, and ventricular leads is feasible, technical improvements of the system are mandatory for safe clinical application.

Subxiphoid pericardial window for pericardial effusion in end-stage renal disease

Fifty-seven patients with end-stage renal disease who were on maintenance dialysis underwent pericardial fluid drainage surgically between January 1980 and December 1991. All patients had echocardiographically proven pericardial effusion of more than 300 to 500 mL. Seven patients had pericardiectomy by left thoracotomy under general anesthesia in the first 2 years. Subsequently, 50 patients underwent a subxiphoid pericardial window by a left subcostal incision. A pericardial drainage tube was inserted at surgery and removed after 4 to 5 days. All but five patients undergoing subxiphoid pericardial window surgery received local anesthesia. The xiphoid process was not resected during surgery and steroids were not instilled in the pericardial cavity. There were minimal complications, no surgery-related deaths, and no recurrence of fluid in patients after pericardial window surgery. With our present experience, we advise a subxiphoid pericardial window with pericardial drainage under local anesthesia for all end-stage renal disease patients on dialysis who have a symptomatic or large pericardial effusion of more than 300 to 500 mL. Steroid instillation is not necessary for the prevention of recurrence of effusion.

Late cardiac strangulation due to an iatrogenic pericardial defect

A 14-year-old boy developed broad posterolateral myocardial infarction. During cardiac surgery at age five, a small pericardial window had been made. Autopsy revealed an extensive left-sided pericardial defect and necrosis of the left ventricular free wall, which had herniated and strangulated through the enlarged pericardial defect.

Pericardiocentesis

Cardiac tamponade is a life-threatening condition resulting from compression of the cardiac chambers by a pericardial effusion. The principal cause of pericardial effusion is malignant disease of the pericardium, but infectious causes and cardiac trauma are common as well. The patient with cardiac tamponade demonstrates an abnormal pulsus paradoxus, and clinical signs of shock and impending cardiovascular collapse occur with very severe cardiac compression. Relief of the increased intrapericardial pressure is mandatory to establish adequate cardiac output. The definitive treatment of cardiac tamponade is emergent removal of enough pericardial fluid to acutely lower intrapericardial pressure. Echocardiographic guidance may be used if immediately available, but is not required to perform pericardiocentesis in a critical situation. Placement of a pulmonary artery catheter prior to pericardiocentesis is not indicated in cardiac tamponade. Once cardiac output and tissue perfusion have been restored, further drainage procedures such as pericardial catheter placement or surgical drainage are indicated. Therapeutic measures to address the underlying disease process should be initiated after pericardial drainage is accomplished.

Percutaneous pericardial catheter drainage in childhood

The clinical course of 41 consecutive pediatric patients (mean age 7.6 +/- 5.8 years, weight 27 +/- 22 kg) who underwent percutaneous pericardial drain placement during a 3-year period were reviewed. The most common diagnoses were malignancy (20%), postpericardiotomy syndrome (17%), aseptic pericarditis (12%), and patients recovering from a Fontan type of operation (12%). Indications for drainage included increasing effusion size determined by 2-dimensional echocardiogram (48%), clinical deterioration (33%) and echocardiographic evidence of hemodynamic compromise (12%). Only 3 (7%) patients had clinical evidence of cardiac tamponade. Drainage catheter placement was accomplished percutaneously from the subxiphoid approach. Insertion was successful in all but 1 patient (98%) and successful evacuation of the pericardial space was achieved in 93% of patients. There was 1 death in a critically ill 2-week-old infant and 4 complications, 3 of which occurred in patients aged less than 2 years. Drainage catheters remained in position from 1 to 18 days (mean 3 +/- 3 days) with no late complications. There were 3 instances (7%) of drainage catheter occlusion. These data support the notion that placement of a percutaneous pericardial catheter is safe and effective in providing definitive drainage of the pericardial space in the pediatric age group. Children younger than age 2 years may be at increased risk for complications.

Subxiphoid pericardiastomy in the management of pericardial effusions

Subxiphoid pericardiostomy for diagnosis and treatment of pericardial effusion was used in 21 patients. Total evacuation of the pericardial contents, direct inspection to break down loculations, simultaneous biopsies of the pericardium and pericardial fluid samples for diagnostic tests were achieved while avoiding the need for repeated pericardiocentesis and more invasive and difficult open drainage methods. Complete drainage without recurrence was obtained in 19 patients with one death and recurrence of effusion in another one. Two of these 19 cases developed constrictive pericarditis on follow-up and required a pericardiectomy. No other complications were encountered. The procedure can be done safely under local anaesthesia for all types of pericardial effusions providing prompt and long term relief of the abnormal haemodynamics.

Subxiphoid pericardiostomy in the management of pericardial effusions

Subxiphoid pericardiostomy for diagnosis and treatment of pericardial effusion was used in 21 patients. Total evaluation of the pericardial contents, direct inspection to break down loculations, simultaneous biopsies of the pericardium and pericardial fluid samples for diagnostic tests were achieved while avoiding the need for repeated pericardiocentesis and more invasive and difficult open drainage methods. Complete drainage without recurrence was obtained in 19 patients with one death and recurrence of effusion in another one. Two of these 19 cases developed constrictive pericarditis on follow-up and required a pericardiectomy. No other complications were encountered. The procedure can be done safely under local anaesthesia for all types of pericardial effusions providing prompt and long term relief of the abnormal haemodynamics.

Pericardial drainage: subxiphoid vs. transthoracic approach

The optimal management of effusive pericardial disease remains controversial. Subxiphoid drainage has been criticized for a high recurrence rate while transthoracic procedures (window or pericardiectomy) are more invasive operations with greater potential for morbidity. We compared subxiphoid (SX group) and transthoracic (TT group) drainage in 131 patients (age range from 1 month to 81 years) treated from 1979 to the present. The etiology of effusion included cancer (38), uremia (24), infection (27), radiation (9), and other (33) causes. The two groups had similar age and sex distribution, etiology, and fluid volume. There was no difference in the operative mortality between the two groups (SX 15%, TT 13%, p = NS). Patients undergoing thoracotomy for treatment of effusive pericardial disease had a higher incidence of respiratory complications as defined by the presence of pneumonia, pleural effusion, prolonged ventilation, and need for reintubation (SX 11%, TT 35%, p less than 0.005). This may account, in part, for the longer mean hospital stay in transthoracic group (14.4 vs. 11.4 days). Nine patients were lost to follow-up after hospital discharge. The remaining 104 hospital survivors were followed for between 1 month and 11 years (mean 34 months, cumulative of 297 patient years). Three patients in each group experienced fluid recurrence and all but one were successfully treated by needle aspiration or percutaneous catheter placement. Following discharge, no patient required reoperation for effusive or constrictive pericardial disease or died from tamponade. There were no significant differences in 5-year actuarial survival (SX 54%, TT 49%) or actuarial freedom from recurrence (SX 89%, TT 93%).(ABSTRACT TRUNCATED AT 250 WORDS)