Scholarly article on topic 'Chronic Constrictive Pericarditis'

Chronic Constrictive Pericarditis Academic research paper on "Clinical medicine"

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Case Reports in Cardiology
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Academic research paper on topic "Chronic Constrictive Pericarditis"

Hindawi Publishing Corporation Case Reports in Cardiology Volume 2013, Article ID 957497, 4 pages

Case Report

Chronic Constrictive Pericarditis

Hossein Doustkami,1 Afshin Hooshyar,2 Nasrollah Maleki,2 Zahra Tavosi,3 and Iraj Feizi4

1 Interventional Cardiology, Department of Cardiology, Imam Khomeini Hospital, Ardabil University of Medical Sciences, Iran

2 Department of Internal Medicine, Imam Khomeini Hospital, Ardabil University of Medical Sciences, Ardabil, Iran

3 Department of Internal Medicine, Shohadaye Khalije Fars Hospital, Bushehr University of Medical Sciences, Bushehr, Iran

4 Department of Cardiothoracic Surgery, Imam Khomeini Hospital, Ardabil University of Medical Sciences, Ardabil, Iran

Correspondence should be addressed to Nasrollah Maleki; Received 4 August 2013; Accepted 25 August 2013 Academic Editors: K.-R. Chiou, M.-H. Jim, and M. B. Srichai

Copyright © 2013 Hossein Doustkami et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Constrictive pericarditis (CP) is a rare clinical entity that can pose diagnostic problems. The diagnosis of CP requires a high degree of clinical suspicion. The gold standard for diagnosis is cardiac catheterization with analysis of intracavitary pressure curves, which are high and, in end diastole, equal in all chambers. We present a patient with unexplained dyspnea, recurrent right-side pleural effusion, and ascites. Analysis of the ascitic fluid revealed a high protein content and an elevated serum-ascites gradient. Echocardiography, computed tomography, and cardiac catheterization revealed the diagnosis of CP. He underwent complete pericardiectomy and to date has made a good recovery. The diagnosis of CP is often neglected by admitting physicians, who usually attribute the symptoms to another disease process. This case exemplifies the difficulty in diagnosing this condition, as well as the investigation required, and provides a discussion of the benefit and outcomes of prompt treatment.

1. Introduction

Constrictive pericarditis (CP) is a disease characterized by the encasement of the heart by a rigid nonpliable pericardium due to dense fibrosis and adhesions. This causes impaired diastolic cardiac function [1]. Patients with pericardial constriction may present with two types of complaints: those related to fluid overload, ranging from peripheral edema to anasarca; and those related to diminished cardiac output response to exertion, such as fatigability and dyspnea on exertion. Pericardial constriction should be considered in any patient with an unexplained elevation in jugular venous pressure, particularly if there is a history of a predisposing condition [2]. The common cause of this disease is idiopathic or viral pericarditis. Other causes include tuberculosis, trauma, cardiac surgery, irradiation with mediastinum, septic infections, histoplasmosis, systemic lupus erythematosus, rheumatoid arthritis, malignancies, and chronic kidney disease along with chronic dialysis [2-5]. Pericardial disease rarely presents as the initial manifestation tuberculosis [69]. Cardiac CT and MRI can detect pericardial thickening and calcification with high accuracy [10]. Echocardiography

is very useful for differential diagnosis between CP and restrictive cardiomyopathy [11, 12]. The gold standard for diagnosis is cardiac catheterization. Pericardiectomy is the only definitive treatment of CP and should be as complete as possible [4,13,14].

2. Case Report

The patient is a 52-year-old man who gradually suffered since about 5 years from exertional dyspnea, weakness and lack of energy, fatigue feeling, pleuritic chest pain, distension of abdomen, and peripheral edema. Patient has a past history of hospitalization one year ago due to chest pain and received coronary angiography, and it was normal. The patient also received diagnostic thoracentesis 6 months before due to dyspnea and the presence of right-side pleural effusion, and he had exudative pleural effusion with lymphocyte-dominant and nondiagnostic cytology, and for this reason, he received thoracoscopy and pleural biopsy which were nondiagnostic. The patient referred to our hospital due to pain and progressive abdominal distention in the past 10 days was hospitalized. On physical examination, the patient was

hemodynamically stable (blood pressure was 110/80 mmHg and pulse was 78 beats per minute). JVP was very elevated. Heart sounds were muffle, and reduction of sound was found at the base of the right lung. In the examination, mild hepatomegaly with ascites and peripheral edema was seen. Primary laboratory evaluations were normal. Analysis of the ascitic fluid revealed a high protein content (4.1g/dL) and an elevated serum-ascites gradient (1.6g/dL). In abdominal sonography, congestive hepatomegaly, mild splenomegaly, ascites, and evidence of portal hypertension were seen. In upper endoscopy, esophageal varices were not seen and viral hepatitis serology was negative. In chest and abdominal CT, right pleural effusion, pericardial thickness and calcification, ascites, and inferior vena cava dilation were seen (Figure 1). To study abdominal vascular thrombosis, MRV (Magnetic Resonance Venography) was performed, and the results were normal. In the conducted echocardiography, enlargement of right atrium (44 mm), right ventricle (46 mm), and left atrium (42 mm) along with mild pericardial effusion, pericardial calcification, inferior vena cava dilation (28 mm) and septal bouncing was found (Figure 2).

Right and left cardiac catheterization were performed for the patient in which elevation and equalization of right atrial pressure (29 mmHg), pulmonary capillary wedge pressure (30 mmHg), mean pulmonary arterial pressure (33 mmHg), right ventricular diastolic pressure (30 mmHg), and left ventricular diastolic pressure (30 mmHg) were found. Curves recorded in right heart catheterization indicate increase of superior vena cava pressure at time of breath and descending, and then horizontal curve of right ventricular pressure (square root sign) was evident (Figure 3). Coronary angiography was normal. All of the findings were consistent with CP.

The patient underwent cardiac surgery during which pericardium was fully thick and calcified (Figure 4(a)), and received pericardiectomy. Pathological study of pericardial sample indicated fibrous pericarditis without granuloma (Figure 4(b)). Gram's staining, staining for acid-fast bacilii, and culture of the pericardium for bacteria, fungus and acid-fast bacilli were negative.

One year after the operation, the patient reported a dramatic improvement in his exertion tolerance, along with decrease of dyspnea and distension of abdomen.

3. Discussion and Conclusion

This case illustrates an unusual cause of ascites. The most common cause of ascites in the United States is cirrhosis, followed distantly by cancer, right-sided heart failure, tuberculosis, pancreatic disease, and various rare infection and hematologic diseases [15]. A serum-ascites albumin gradient >1.1g/dL and an ascites fluid total protein >2.5g/dL are typical of CP and other postsinusoidal causes of ascites. Sinusoidal diseases, such as liver cirrhosis, exhibit a serum-ascites albumin gradient >1.1g/dL but an ascites fluid total protein <2.5 g/dL [16]. When ascites is present, estimation of the jugular venous pressure is critical, since it can frequently separate cardiac from noncardiac causes. Elevated jugular

venous pressure can be challenging to detect, even when the assessment is made by experienced clinicians. The overall correlation between clinical assessment of the jugular venous pressure direct measurement of central venous pressure by central venous catheterization is poor; an overall accuracy of 56% has been reported in classifying the central venous pressure as low, normal, or high, with a sensitivity for detection of a high central venous pressure (>10 cm of water) of less than 60% [17-19]. In this case, the failure to recognize the elevated jugular venous pressure led to a delay in diagnosis and extensive diagnostic testing. Symptoms of CP are typically related to systemic venous congestion and low cardiac output. Whereas elevated jugular venous pressure was present in nearly all patients with CP in a large case series, peripheral edema was absent in approximately 25% of patients, particularly early in the disease process, and less than 6% of patients presented with predominantly abdominal symptoms [2]. Therefore, a high index of suspicion is required to diagnose this entity, especially in patients with elevated protein-count ascites, jugular venous distention, and no cardiopulmonary symptoms. Pleural effusion occurs in 4450% of patients with CP [4, 20]. Tomaselli and coworkers retrospectively analyzed 30 patients who presented with CP and found that 60% (18 patients) had pleural effusion [21]. Bilateral and symmetrical effusions were found in 12 patients, and the remaining 6 had unilateral pleural fluid (3 had right-side effusion and 3 had left-side effusion). Our patient had left side pleural effusion. Pericardial thickening detected on CT or MRI is absent in up to 28% of patients with surgically proven CP [13]. Our patient had right side heart failure and a typical cardiac CT calcification. Typical echocardiographic findings, such as normal systolic function, a plethoric inferior vena cava, a restrictive mitral inflow pattern with respiratory variation, reversal of expiratory hepatic vein flow, a septal motion suggestive of enhanced ventricular interaction, or an elevated early diastolic mitral annular velocity (E') detected by tissue Doppler imaging, may not be observed if images are poor or if CP is not explicitly noted as a potential diagnosis [22,23]. Elevated and equalized diastolic pressures on cardiac catheterization are the rule for CP. Ventricular filling is rapid early and blunted late by the stiffened pericardial sac, leading to the characteristic steep y descent of right atrial pressure and the dip and plateau of ventricular pressure [24, 25]. Although these hemodynamic patterns can be observed in other causes of heart failure such as restrictive cardiomyopa-thy, discordance between changes in right and left ventricular systolic pressures during respiration, known as ventricular interdependence, reliably distinguishes CP from these other conditions [13, 26]. Most patients with CP required surgical pericardiectomy. Removal of densely adherent pericardium is usually successful but can be extremely challenging [2]. Moreover, recovery can be delayed for several weeks, and patients in whom the constriction has progressed to the point of abnormal ventricular function, severely reduced cardiac output, cachexia, or end-organ dysfunction derive the least benefit from the procedure [4,27], an observation that underscores the importance of prompt diagnosis and treatment.

The diagnosis of CP in our patient was probably delayed from two reasons: the rarity of the diagnosis and the failure

(a) (b) (c)

Figure 1: Chest CT showing pleural effusion, cardiac calcification, ascites, and IVC dilation.

(a) (b) (c)

Figure 2: Echocardiography showing septal bouncing (a), dilation of IVC (b), pericardial effusion, and calcification (c).

Figure 3: The equalization of diastolic pressures and "square root sign" or "dip and plateau sign" of the left ventricular waveforms.

The arrows indicate thickened pericardium Paucicellular fibrosis

(a) (b)

Figure 4: Surgical and pathological findings.

to recognize the elevated jugular venous pressure on initial examination. This case reminds us that reconsideration of clinical information from a different angel can facilitate the diagnostic process in patients with complex conditions. In conclusion, in case there is any calcification in a cardiac CT with right-sided heart failure symptoms, we should consider the diagnosis of constrictive pericarditis and performing further cardiac investigations.


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