When should the pericardial effusion drainage tube be removed?

Written by Di Zhi Yong
Cardiology
Updated on September 05, 2024
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If the patient has pericardial effusion and there is no apparent leakage from the drainage tube, and no fluid drainage, it is possible to consider removing the tube after two days.

In cases like this, active drainage is sometimes still necessary because pericardial effusion is a type of exudate, which can be inflammatory. Draining can help relieve the cardiac workload. If the drainage tube is clear and there is no fluid leakage, removing the tube after about two days can be considered.

However, there is a situation where the tube must not be removed. If there is fluid leaking from the pericardial effusion, or if the symptoms of pericardial effusion are still severe, and there is some fluid remaining in the pericardial cavity, the tube should not be removed.

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Written by Di Zhi Yong
Cardiology
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Pericardial effusion usually requires attention to the following aspects:

If the patient has pericardial effusion, it is still necessary to maintain a light diet, eat small meals frequently, and especially avoid spicy and irritating foods. Meanwhile, patients should pay attention to regular re-examinations of cardiac echocardiography and electrocardiograms, as the most effective and direct method for diagnosing pericardial effusion is puncture and fluid extraction for examination. For minor amounts of pericardial effusion, it is recommended that patients first observe and use medication, which can also help alleviate symptoms. During this period, it is important to monitor changes in the patient's blood pressure and heart rate. If blood pressure rises or heart rate increases rapidly, it can exacerbate pericardial effusion. However, it is still crucial to actively use medication for early intervention, which can also help alleviate symptoms, and actively prevent upper respiratory infections.

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Written by Cai Li E
Cardiology
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Why does pericardial effusion cause abnormal pulses?

Pulsus paradoxus refers to a condition where the pulse weakens significantly or disappears during inhalation, caused by a decrease in the left ventricular stroke volume. Normally, the strength of the pulse is not affected by the respiratory cycle. However, when cardiac tamponade, significant pericardial effusion, or constrictive pericarditis occurs, inhalation can restrict the relaxation of the right heart, leading to a reduced volume of blood returning to the heart and affecting the right heart’s output. Consequently, the amount of blood the right ventricle pumps into the pulmonary circulation is reduced. Furthermore, the pulmonary circulation is affected by the negative thoracic pressure during inhalation, causing pulmonary vessels to dilate and reducing the volume of blood returning from the pulmonary veins to the left atrium. Therefore, the output of the left heart also decreases. These factors lead to a weakened pulse during inhalation, which can sometimes be imperceptible, also known as pulsus paradoxus. This condition can be identified by a significant drop in systolic pressure by more than 10mmHg during inhalation compared to exhalation.

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Written by Li Hai Wen
Cardiology
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Can pericardial effusion cause chest pain?

Pericardial effusion can cause chest pain because patients with pericardial effusion have limited cardiac diastolic expansion, resulting in a restricted blood volume during the cardiac diastolic phase. This ultimately causes reduced cardiac pumping, leading to symptoms of ischemia and hypoxia, such as chest tightness or chest pain. Furthermore, as the amount of pericardial effusion decreases, for example from moderate or large volumes to a small amount, chest pain symptoms can also occur. This is because when the volume of pericardial effusion significantly reduces, there can often be friction between the visceral and parietal layers of the pericardium, thereby triggering chest pain. This condition is often accompanied by a pericardial friction rub, which can be felt by touching the precordial area.

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Written by Di Zhi Yong
Cardiology
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What position should be taken for pericardial effusion?

If the patient is diagnosed with pericardial effusion, it is generally recommended that the patient remain in a semi-recumbent position, or with legs dangling, to reduce cardiac load and improve symptoms. This is because the main complication of pericardial effusion is the occurrence of myocardial ischemia, or myocardial necrosis. Additionally, the primary treatment for pericardial effusion is still based on pericardiocentesis to improve cardiac function. During this period, it is also essential to actively monitor changes in the patient's blood pressure. If the patient's blood pressure is too high, antihypertensive medications should be used. Generally, a semi-recumbent position is still recommended for patients with pericardial effusion.

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Written by Li Hai Wen
Cardiology
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Is pericardial effusion related to pneumonia?

Pericardial effusion is generally not closely related to pneumonia. The common causes of pericardial effusion mainly include tuberculous pericarditis, as well as factors such as tumors, heart failure, and hypoproteinemia. The onset of pulmonary inflammation primarily affects the lungs, with symptoms often manifesting as cough and yellowish sputum. Some patients may also experience pleural effusion. Pulmonary CT scans typically show inflammatory exudative changes. If the pericardial effusion is minor, it is usually not a significant issue, but proper medical examination is necessary to rule out causes like tuberculosis or tumors that could lead to pericardial effusion.