Pericardial effusion


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.


Is it serious if the fluid drained from pericardial effusion is red?
If the fluid drawn from pericardial effusion is red, it indicates that there is definitely bloody fluid seeping out. This situation is very serious, and it is recommended that hospitalization be chosen for treatment, as this can alleviate symptoms and improve the patient's cardiac function. If these symptoms persist, they may sometimes worsen, leading to heart failure. The patient may experience palpitations, chest tightness, difficulty breathing, and swelling in the lower limbs. Because pericardial effusion directly affects the function of the heart, treatment may involve the use of cardiotonic and diuretic medications. Mainly, medications that invigorate muscle strength are used to improve the myocardial oxygen consumption of the patient, thereby achieving the goal of alleviating clinical symptoms.


What position should be adopted for difficulty in breathing due to pericardial effusion?
If a patient frequently experiences difficulty in breathing, it is recommended to immediately adopt a sitting position, as this can reduce the load on the heart, thereby alleviating expansion. Currently, for the purpose of treating breathing difficulties, conditions like pericardial effusion are very serious, and puncture aspiration for examination can be chosen as a treatment. For heart failure caused by pericardial effusion, sometimes it is necessary to use some cardiotonic diuretics, thus improving the patient's breathing difficulties. Currently, symptomatic treatment is primarily adopted in therapy, mainly adopting a semi-recumbent position or dangling both legs, which can reduce the heart's afterload, thereby easing the patient's condition.


Can pericardial effusion cause shortness of breath?
If the patient has pericardial effusion, this situation is very serious, as pericardial effusion can lead to symptoms such as palpitations, chest tightness, and difficulty breathing. If the pericardial effusion is excessive, it can also cause heart failure in the patient. Sometimes, further pericardiocentesis may be needed to examine the fluid. In cases of pericardial effusion, it is important to assess the patient's condition, as mild pericardial effusion can cause shortness of breath. During treatment, the primary approach is usually to use anti-inflammatory medications or drugs that improve heart function. This can help alleviate symptoms. At the same time, it is important to monitor changes in the patient’s blood pressure and heart rate.


Can a large amount of pericardial effusion be cured?
If a patient presents with a large amount of pericardial effusion, surgical treatment is primarily chosen, yet the specific approach should be decided based on the patient's current condition. If the patient's symptoms of heart failure are severe, it is first necessary to actively correct the heart failure before addressing the large pericardial effusion, since a significant pericardial effusion can lead to cardiac tamponade, a very dangerous condition that requires immediate pericardiocentesis to alleviate the heart failure. Currently, symptomatic treatment is the main approach. For severe cases of extensive pericardial effusion, it is best for the patient to be hospitalized to alleviate their condition.


Can pericardial effusion cause chest pain?
Pericardial effusion is a type of cardiovascular disease, and if it is severe, it can cause chest pain. This is primarily due to changes in heart function, with patients mainly experiencing symptoms such as palpitations, chest tightness, and difficulty breathing. If chest pain occurs, it indicates that the symptoms are very severe, and it is recommended to seek active treatment at a hospital, using medications to control heart failure or performing fluid extraction for examination. For the treatment of pericardial effusion, percutaneous fluid drainage can be chosen, which can also alleviate the patient’s condition. Generally, chest pain could also be caused by pericardial effusion. During this period, it's important to monitor changes in the patient's blood pressure, heart rate, and pulse. If blood pressure is too high or heart rate is too fast, it needs to be addressed.


The causes of recurrent pericardial effusion
Pericardial effusion can be caused by many factors, such as acute pericarditis or chronic tuberculous pericarditis. Other causes include hypothyroidism, tumors, heart failure, and severe hypoproteinemia due to liver dysfunction, all of which can lead to pericardial effusion. Common pericardial effusion infections, hypothyroidism, or heart failure might improve after treatment. However, if the cause of certain intractable diseases cannot be removed, pericardial effusion may recur. For example, pericardial effusion caused by malignant tumors and hypoproteinemia is common in patients with cirrhosis, severe liver failure, or nephrotic syndrome. Such individuals often experience recurring pericardial effusions. Another example is patients with heart failure, who, in the terminal stages of heart disease, also frequently experience recurrences of pericardial effusion. Therefore, managing recurrent pericardial effusions in patients, particularly when not due to infectious factors, can be quite challenging.


What is the cause of pericardial effusion with persistent high fever?
If the patient presents with pericardial effusion and experiences elevated body temperature, it may indicate the presence of an infection, suggesting that the symptoms are worsening. Currently, the treatment for pericardial effusion primarily involves puncture, fluid extraction, and laboratory analysis. If the pericardial effusion is severe or abundant, fever may occur. Since fever is an indicator of inflammation, it is necessary to use antibiotics for active treatment in order to control this condition. If the body temperature continues to rise, sometimes it is also necessary to use antipyretic drugs to alleviate the symptoms. Persistent high fever indicates that the condition has become very serious, signaling that the infection indices are extremely severe.


Can pericardial effusion cause facial swelling?
If a patient has a history of pericardial effusion, this condition may present with eyelid edema. Because cardiac tamponade can cause the patient to experience sodium and water retention, this retention can manifest as eyelid edema, as well as edema in both lower limbs. In cases where the volume of pericardial effusion is substantial, surgical treatment, such as aspiration for fluid extraction, may sometimes be necessary. For minor and smaller volumes of pericardial effusion, the effusion can be absorbed on its own, with symptomatic treatment being the main approach. Eyelid edema can occur with pericardial effusion, and active treatment should be pursued. Using medications to improve symptoms can provide relief.


What should I do if pericardial effusion prevents me from lying down?
If pericardial effusion occurs and the patient cannot lie flat, it indicates that this heart failure has not been timely corrected. The patient should immediately go to the hospital to use medications, especially cardiovascular and diuretic drugs, to improve cardiac function and alleviate the current condition of the patient. Generally, it is still recommended that patients primarily adopt a semi-recumbent position to reduce the load on the heart muscle, thereby improving symptoms. If the patient cannot lie flat, do not force it; a semi-recumbent position will suffice as it makes no significant difference. With aggressive internal medicine treatment, pericardial effusion can be alleviated, and the patient's symptoms will improve. However, during this period, it is still necessary to monitor changes in the patient's heart rate, blood pressure, and pulse, and to address any issues promptly.