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[Hepatic hydrothorax].

Hepatic hydrothorax is a rare complication of portal hypertension secondary to liver cirrhosis affecting approximately 5-10% of cirrhotic patients with ascites. Hepatic hydrothorax results from an accumulation of fluid migrating through a diaphragmatic defect from the abdominal cavity into the pleural cavities. The effusion of hepatic hydrothorax is typically transudative whereas the effusion of spontaneous bacterial empyema (SBEM) is exudative. The clinical management of hepatic hydrothorax is equivalent to that of ascites. Patients with persistent hepatic hydrothorax despite fluid and sodium restriction as well as the use of maximally tolerable doses of diuretics and repeated thoracentesis are considered to have refractory hepatic hydrothorax. SBEM is a frequent underlying condition. SBEM occurs in up to 13% of patients with hepatic hydrothorax and should be treated by antibiotic therapy. Refractory hydrothorax is observed in 10% of patients with hepatic hydrothorax. These patients should be considered for transjugular intrahepatic portal systemic shunt (TIPS) placement which is the most effective option for refractory hepatic hydrothorax with response rates ranging up to 80% in most studies. Suitable patients with hepatic hydrothorax should be considered as candidates for liver transplantation. TIPS may help to bridge the time to liver transplantation.

Empyema, Pleural↗

Long-term follow-up of thoracoscopic pleurodesis for hydrothorax complicating peritoneal dialysis.

BACKGROUND: Massive hydrothorax is a significant complication of continuous ambulatory peritoneal dialysis (CAPD) and its ideal management remains undefined. Conservative management in the form of intermittent peritoneal dialysis had limited success. The use of conventional pleurodesis and open thoracotomy were associated with morbidities and limitations. We retrospectively reviewed the long-term outcome of 8 patients with massive hydrothorax complicating CAPD, 6 of whom received thoracoscopic pleurodesis. METHODS: Among 397 patients undergoing continuous ambulatory peritoneal dialysis during the period from 1994 to 1998, hydrothorax developed in 8 patients. Four patients were first treated with temporary intermittent peritoneal dialysis using 1-L exchange cycles. Three of them had a recurrence of the hydrothorax whereas only one could resume continuous ambulatory peritoneal dialysis successfully. Two patients then underwent conventional pleurodesis but failed. One of them was switched to hemodialysis. Thoracoscopic pleurodesis was performed for the remaining 2 patients together with 4 other patients with hydrothorax once this complication developed. There were no gross abnormalities including pleuroperitoneal communication sites identified. Talc poudrage was performed in 2 patients and mechanical rub pleurodesis in the other 4 patients. All had uncomplicated procedure and uneventful recovery. RESULTS: One patient after thoracoscopic pleurodesis was soon switched to hemodialysis for an unrelated reason. The other 5 patients resumed continuous ambulatory peritoneal dialysis with no recurrence of hydrothorax for a mean period of 50 months (range 19 to 84). CONCLUSIONS: With thoracoscopic pleurodesis, patients resumed continuous ambulatory peritoneal dialysis without recurrence of hydrothorax on long-term follow-up.

Adult↗

Hepatic hydrothorax.

Hepatic hydrothorax is the accumulation of ascitic fluid in the pleural space and requires the same treatment as ascites: salt restriction, diuretics, and paracentesis. Refractory hydrothorax appears when there is no response to those measures and its management is not well established. Videothoracoscopy is a promising therapy that permits the detection and closure of diaphragmatic defects, and when used with pleurodesis resulted in long-lasting control of hydrothorax in six of eight patients without appreciable morbidity. The transjugular intrahepatic portosystemic shunt is an effective therapy in more than 75% of refractory hydrothorax cases. Hepatic encephalopathy and worsening of liver function in some patients are the main adverse effects. Spontaneous bacterial empyema, the infection of a hydrothorax, was reported in 13% of 120 cirrhotic patients with hydrothorax. Forty percent of the episodes of spontaneous bacterial empyema were not associated with spontaneous bacterial peritonitis. The sensibility of pleural fluid culture improves inoculating pleural fluid into a blood culture bottle at the bedside. Patients with refractory hydrothorax or those having an episode of spontaneous bacterial empyema should be considered candidates for liver transplantation.

Anti-Bacterial Agents↗

Liver transplantation in patients with hepatic hydrothorax.

Hepatic hydrothorax is a uncommon complication of cirrhotic patients and the results of liver transplantation (OLT) in patients with this complication are not well defined. We studied postoperative complications and survival of 28 patients with hepatic hydrothorax transplanted at our center during a period of 12 years, comparing them with a control group of 56 patients transplanted immediately before and after each case. There were no differences between hydrothorax group and control group in days of mechanical ventilation after surgery, transfusion requirements, postoperative mortality and long-term survival (70% vs. 55% at 8 years, P = 0.11). Long-term evolution was similar between patients with refractory hepatic hydrothorax or spontaneous bacterial empyema and those with noncomplicated hepatic hydrothorax. Hepatic transplantation is an excellent therapeutic option for patients with hepatic hydrothorax. Presence of hepatic hydrothorax does not imply more postoperative complications, and long-term survival is similar to other indications of hepatic cirrhosis.

Adult↗

The persisting pneumatoenteric recess and the infracardiac bursa: possible role in the pathogenesis of right hydrothorax complicating peritoneal dialysis.

Hydrothorax, an uncommon complication of peritoneal dialysis (PD), results from the migration of dialysis fluid under pressure from the peritoneal cavity into the pleural space. The exact site of the transdiaphragmatic fluid leak remains obscure, but the right-sided predominance of the hydrothorax points to the presence of abnormalities in the right hemidiaphragm. Such abnormalities have occasionally been described. In a recent case of acute massive right hydrothorax at the start of PD, the autopsy revealed extensive changes of amyloidosis that were comparable in both hemidiaphragms, prompting us to revisit the accepted explanation for right hydrothorax. We propose that an embryonic remnant--namely, the persisting pneumatoenteric recess and the infracardiac bursa--provides a passage connecting the peritoneal cavity to the right pleural space. The potential presence of this mechanism is consistent with the recognized clinical features of right hydrothorax complicating PD. This proposed route for dialysis fluid to form a right hydrothorax during PD can be investigated by currently available high-definition imaging techniques. This novel mechanism may also be involved in the pathogenesis of right hydrothorax observed in other medical conditions with tense ascites (liver cirrhosis, Meigs syndrome).

Acute Disease↗

The successful treatment of symptomatic, refractory hepatic hydrothorax with transjugular intrahepatic portosystemic shunt.

Hepatic hydrothorax is a rare complication of portal hypertension. Conservative therapy may be successful but refractory hepatic hydrothorax is not uncommon. Management of refractory hydrothorax is usually ineffective and can result in a worsened clinical status. Transjugular intrahepatic portosystemic shunts (TIPS) lower portal pressure and have been used in the treatment of refractory ascites. The aim of this study was to determine the efficacy of TIPS in the treatment of symptomatic refractory hepatic hydrothorax. A TIPS was placed in 24 consecutive cirrhotic patients with symptomatic refractory hepatic hydrothorax. Five patients (20.8%) were Child's/Pugh class B and 19 (79.2%) were class C. All had undergone multiple thoracenteses and were hypoalbuminemic. Mean follow-up was 7.2 months (range, 0.25-49 months). Fourteen (58.3%) of 24 patients had complete relief of symptoms after shunt placement and did not require further thoracentesis. Five (20.8%) additional patients required fewer thoracenteses. Five (20.8%) patients developed worsening liver function and died within 45 days. In eight (66.7%) of 12 patients with > or = 60 days of follow-up, the serum albumin increased by a mean of 1.2 g/dL (range, 0.1-2.2 g/dL). The Child's-Pugh score improved in 7 (58.3%) of these 12 patients and two patients improved from class C to class A. These two patients no longer require liver transplantation. This study shows that TIPS can be effective in the management of symptomatic, refractory hepatic hydrothorax. Clinical and laboratory improvement may be seen and liver transplantation may become unnecessary.

Female↗

Treatment of refractory hepatic hydrothorax with transjugular intrahepatic portosystemic shunt: long-term results in 40 patients.

BACKGROUND/AIMS: Hepatic hydrothorax is a complication of portal hypertension secondary to ascites. In this study, we investigated retrospectively the effects of the transjugular intrahepatic portosystemic shunt (TIPS) on hepatic hydrothorax refractory to diuretic treatment. METHODS: Forty patients (Child-Pugh class B, 24 patients; Child-Pugh class C, 16 patients) with hydrothorax refractory to diuretic treatment, pleurocenteses or pleurodesis were included. The TIPS implantation was successful in all patients, who were then followed for 16 +/- 14 months (range 1 day-54 months). RESULTS: TIPS reduced the portosystemic pressure gradient from 26 +/- 6 to 10 +/- 5 mmHg. In the 17 patients whom we followed for 12 months or longer, improvements were found for the Child--Pugh score (8.6 +/- 1.8 v. 6.7 +/- 1.5), serum albumin concentration (3.1 +/- 0.5 v. 3.6 +/- 0.5 g/l), and urinary sodium excretion (22 +/- 29 v. 89 +/- 43 mmol/24 h) (P< 0.05). Two patients developed severe hepatic encephalopathy requiring shunt occlusion. Hydrothorax improved in 82% of patients and resolved in 71% of patients. Fifty per cent of patients developed shunt insufficiency within 7 +/- 9 months, contributing to a probability of relapse-free 1-year survival of 35%. In these patients, shunt revision resulted in a secondary response rate of 82.3%. The 1-year survival was 64%. Both hydrothorax response and survival showed a significant inverse correlation with age over 60 years (P< 0.01 and P< 0.003, respectively) but not with other biomedical variables. CONCLUSION: TIPS is effective for hydrothorax refractory to diuretic treatment and other standard interventions to bridge the time to transplantation. Patients older than 60 years have a poor response and short survival.

Adult↗

The morphology of diaphragmatic defects in hepatic hydrothorax: thoracoscopic finding.

BACKGROUND: Until now, the pathophysiology of hepatic hydrothorax has been moot. We discuss (on the basis of gross videothoracoscopy findings in 11 cases and the literature) the pathogenesis and clinical presentation of this complex condition. METHODS: We prospectively studied 11 patients (age, 31-73 years; 6 men and 5 women) with refractory hepatic hydrothorax (Child-Pugh class B-C) who underwent thoracoscopic repair of diaphragmatic defects. The diaphragmatic defects were examined intraoperatively. RESULTS: The diaphragmatic defects stemming from hepatic hydrothorax were classified into 4 morphologic types: type I, no obvious defect (1 patient); type II, blebs lying on the diaphragm (4 patients); type III, broken defects (fenestrations) in the diaphragm (8 patients); and type IV, multiple gaps in the diaphragm (1 patient). The type of diaphragmatic defect did not correlate with the volume occupied by the pleural effusion in the preoperative chest radiograms. CONCLUSIONS: The finding of this study allowed hepatic hydrothorax pathophysiology to be directly visualized, and further studies concerning the treatment of hepatic hydrothorax might be based on these mechanisms.

Aged↗

Resistant hepatic hydrothorax: a successful case with treatment by nCPAP.

Hepatic hydrothorax is defined as pleural effusion with liver cirrhosis but no primary cardiopulmonary disease. Hepatic hydrothorax is often resistant to various therapeutic interventions. The most likely cause is the transfer of ascites fluid from the abdomen to the pleural space via the diaphragm because of a negative intrathoracic pressure gradient. A 62-year-old man was diagnosed with hepatoma and cirrhosis. After a partial hepatectomy, he suffered with hepatic hydrothorax. He had snoring without obvious sleep apnea. The patient's hepatic hydrothorax markedly improved following nasal continuous positive airway pressure (nCPAP) treatment during sleep. The mechanism for the improvement may have been the intrathoracic positive pressure during sleep induced by the nCPAP treatment during sleep. nCPAP treatment may provide a new therapy for resistant hepatic hydrothorax.

Carcinoma, Hepatocellular↗

Treatment of hepatic hydrothorax with terlipressin in a cirrhotic patient.

Hepatic hydrothorax is a complication of cirrhosis that is uncommon and difficult to treat. Diuretic therapy, thoracentesis, transjugular intrahepatic portosystemic shunt and liver transplantation are the main therapeutic options. Here, we report on a 47-year-old man with decompensated liver cirrhosis related to hepatitis B and D virus infections and who had complications of hepatic hydrothorax and hepatorenal syndrome. In this case, the hepatic hydrothorax, which was refractory to thoracic tube drainage and octreotide treatment, could be controlled with 5 days of terlipressin therapy associated with albumin. Terlipressin administration resulted in both improvement in renal function and successful resolution of hepatic hydrothorax. Splanchnic vasoconstrictor agents that reduce splanchnic blood flow, increase both central volume and effective renal blood flow. Thus they improve renal function. In our case, terlipressin, known to be beneficial in hepatorenal syndrome, was also effective in the treatment of hepatic hydrothorax probably by similar mechanisms. This is the first case in the literature.

Albumins↗

Delayed hydrothorax following percutaneous central venous cannulation.

Isolated cases of delayed complications associated with prolonged use of percutaneous central venous lines have been reported. We report four patients who developed hydrothorax more than 24 h after central venous cannulation due to perforation of an intrathoracic vein wall by the catheter tip. The patients were all adults of average body habitus. Left-sided catheters were placed in the operating room after anesthetic induction by experienced personnel using the Seldinger technique and secured in position with a dressing and tape. Chest x-rays taken in the recovery room showed all catheter tips terminated in the central vein and no evidence of hydrothorax. Hydrothorax was manifested in the post-operative period and occurred 1-7 days postcannulation. We are left with the conclusion that the delayed hydrothorax resulted from gradual penetration of the vein wall by the catheter tip. We feel a combination of factors probably contributed to the vein wall erosion. First, the insecure fixation of the catheter combined with head, neck, and cardiopulmonary motion has been shown to result in the back-and-forth movement of the catheter tip. Second, the stiff catheters in the left jugular system take a curved course to the superior vena cava bringing the catheter tip into close proximity to the wall of the superior vena cava. We therefore conclude that late developing hydrothorax can be minimized by using a soft, pliable catheter, sutured firmly in place. Right-sided line placement is preferable to left-sided placement because of the anatomic relationships.

Adult↗

Hepatic hydrothorax--pathophysiology, diagnosis and treatment--review of the literature.

Hepatic hydrothorax is defined as the accumulation of significant pleural effusion in a cirrhotic patient without primary pulmonary or cardiac disease. Hydrothorax is uncommon occurring in up to 4-6% of all patients with cirrhosis and up to 10% in patients with decompensated cirrhosis. Although ascites is usually present, hydrothorax can occur in the absence of ascites. Patients with hepatic hydrothorax usually have advanced liver disease with portal hypertension and most of them will require liver transplantation. Over the last few years, new insights into the pathogenesis of this entity have lead to improved treatment modalities such as portosystemic shunts (TIPS) and video-assisted thoracoscopy for closure of diaphragmatic defects. These modalities may be of help as a bridge to transplantation. The aim of this review is to describe recent developments in the pathogenesis, diagnosis and treatment of hepatic hydrothorax.

Humans↗

Acute hydrothorax in continuous ambulatory peritoneal dialysis--a collaborative study of 161 centers.

Follow-up studies on 3,195 patients from 161 centers in Japan undergoing continuous ambulatory peritoneal dialysis (CAPD) were performed for 1-104 months to clarify the incidence as well as the clinical features of acute hydrothorax. In these studies, 50 patients (1.6%) developed this complication. Twenty-seven (54%) were men, and 23 (46%) were women, ranging in age from 6 to 79 (average 49) years. The interval between onset of CAPD and hydrothorax ranged from 1 day to 8 years. Four had left-sided, and 2 had bilateral hydrothorax, but the majority (88%) were right-sided. Dyspnea was experienced by 37 of these 50 patients, but the remaining 13 (26%) patients were asymptomatic. Hydrothorax was fully resolved in 27 of them following a brief interruption of CAPD or the combined use of small exchange volumes in a semi-sitting position and pleurodesis with tetracycline or other agents. The remaining 23 patients (46%) were switched to hemodialysis permanently. Despite recurrence, 1 patient continued successfully on CAPD. It was concluded that acute hydrothorax is one important possible complication, although the risk may be low. Constant surveillance is necessary to detect pleural effusions in patients during CAPD.

Acute Disease↗

Echocardiographic evaluation of fetal hydrothorax: the effusion ratio as a diagnostic tool.

OBJECTIVE: Fetal hydrothorax may lead to hydrops and is associated with mortality as high as 50%. The objective of this study was to define the pathophysiology of fetal hydrothorax and its relation to hydrops. METHODS: Measurements from echocardiograms of 33 fetuses diagnosed with hydrothorax were made, and included diameters of the thorax, heart, inferior vena cava, right ventricle (RV), left ventricle (LV) and aortic and pulmonary valves. Doppler-derived velocities were measured in the aorta and pulmonary artery just above the aortic and pulmonary valves. The ratio of the area of the effusion to the area of the thorax (effusion ratio) was calculated. Variables were converted into Z-scores from regression equations based on normal data. Features of fetuses with and without hydrops were compared. RESULTS: Higher effusion ratios were noted in hydropic versus non-hydropic fetuses. Compared to a normal population, study subjects had smaller dimensions of LV, RV and aortic and pulmonary valves. They also had higher pulmonary artery peak velocities. The comparison between non-hydropic and hydropic fetuses revealed lower values for LV and pulmonary valve dimensions, and peak aortic velocity in hydropic fetuses. The severity of LV compression correlated significantly with effusion ratio. CONCLUSION: Fetal hydrothorax is accompanied by compression of the cardiac structures, resulting in altered cardiac hemodynamics. Echocardiographic assessment, including the measurement of effusion ratio, may be a useful tool in guiding fetal therapy.

Blood Flow Velocity↗

Percutaneous ethanol injection via an artificially induced right hydrothorax for hepatocellular carcinoma in the hepatic dome.

To evaluate the efficacy of sonographically (US) guided percutaneous ethanol injection (PEI) via an artificially induced right hydrothorax (transthoracic PEI) to treat US-invisible hepatocellular carcinoma (HCC) in the hepatic dome. Five cirrhotic patients with US-invisible HCC in the hepatic dome, who were poor surgical candidates, underwent transthoracic PEI. An artificial right hydrothorax was created by instilling 500 ml saline, and absolute ethanol was injected transhydrothoracically into the hepatic dome lesion under local anesthesia. The success and complications were assessed radiologically. The patients were followed up serologically and radiologically for 12-44 (mean 28.4) months. Twenty-five hydrothoraces were induced. All hydrothoraces enabled US visualization of the entire hepatic dome. Eight of the nine small lesions were treated successfully by the treatment. Two of the three local recurrences were eradicated by repeat transthoracic PEI. One large lesion was treated by a combination of transthoracic and regular PEI. The only complication was one clinically insignificant pneumothorax. Induction of a right hydrothorax is feasible and safe. The hydrothorax enables US visualization of the entire hepatic dome and permits US-guided PEI for HCC in the hepatic dome that otherwise would not be possible.

Aged↗

Noninvasive management of isolated bilateral fetal hydrothorax.

Fetal outcome was studied in eight cases of isolated bilateral fetal hydrothorax. All patients were referred because of polyhydramnios. Spontaneous resolution of pleural effusion was observed twice. No remarkable change in the degree of hydrothorax was demonstrated in the remaining six cases. All eight cases resulted in the birth of a live infant without other abnormalities. Postnatal intubation, which was carried out in all six fetuses with hydrothorax, was always followed by spontaneous respiration. Subsequent thoracocentesis resulted in the collection of 50 to 500 ml of serous fluid. Sustained intubation (7 days) was necessary in only two infants because of developing respiratory distress as a result of prematurity or recurrent pleural fluid accumulation. All eight infants were alive and well at the age of 1 month. Although in the present study noninvasive management of isolated fetal hydrothorax seems to have been justified, a larger multicenter study is needed to compare survival with and without pleuroamniotic shunting.

Adult↗

Transient severe unilateral and subsequent bilateral primary fetal hydrothorax with spontaneous resolution at 34 weeks' gestation associated with normal neonatal outcome.

Unilateral primary fetal hydrothorax with spontaneous resolution is a rare occurrence. We present a case in which severe unilateral primary fetal hydrothorax was visualized at 28 weeks' gestation. Two weeks later bilateral primary fetal hydrothorax was documented. Ultrasonographic follow-up demonstrated further dynamic changes in the fetal condition, with an isolated unilateral hydrothorax 1 week later and subsequent complete resolution at 34 weeks' gestation. Delivery resulted in a normal neonate with no signs of pulmonary hypoplasia.

Adult↗

Management of ascites with hydrothorax.

Hydrothorax occurs in 5.3 percent of ascitic patients. Our experience with 22 cases forms the basis of this report. Of the 22 cases, 21 were spontaneous and 1 was due to transdiaphragmatic incision. Eighteen occurred on the right side. Usually fluid enters the chest through tiny defects in the diaphragm. These defects are often covered by pleuroperitoneum, but the high abdominal pressure raises a bleb on the superior surface of the diaphragm. Rupture produces hydrothorax. The ascites is often relieved with the onset of the hydrothorax. Blockage of the thoracic duct has produced chylous ascites. The thoracoabdominal communication is immediately confirmed by a scan of the chest and abdomen after intraperitoneal injection of technetium-99 colloid. Fluid is tapped from the chest immediately before intraperitoneal injection. The rate at which the technetium-99 enters the chest is related to the size of the defect in the diaphragm. A significant transfer should occur within 12 hours. Immediate transfer occurs with large defects. The ruptured blister on the diaphragm forms a one-way valve. Intrathoracic injection does not migrate into the peritoneal cavity. The valvular characteristics of the leak force ascitic fluid into the thorax because the differential pressure between the abdominal and pleural cavities is intensified by inspiration. If tension hydrothorax has occurred, urgent thoracocentesis and paracentesis may be required. A chest tube should not be introduced. The main principle of surgery is to supply a low resistance pathway for the return of fluid to the venous system and to eliminate the diaphragmatic defect by obliteration of the pleural space. A LeVeen peritoneovenous shunt is performed after emptying the abdomen of its fluid load. After completion of the shunt operation, the chest is emptied of fluid, and a sclerosing agent (tetracycline or nitrogen mustard) is injected into the pleural cavity. Closure of the defect is verified by technetium-99 labeled scans which also confirm shunt patency. With this regime, the defect closed or was rendered insignificant in 18 of 22 patients. One patient had a post-transdiaphragmatic surgical defect which was too extensive to be closed by the aforementioned procedures. One patient remained well but did not have closure of the defect, one patient with a ruptured hiatal hernia did not have closure, and one patient who had previous placement of a chest tube could not be closed. Therefore, 18 of 22 patients were successfully treated.

Ascites↗