Subscribe
59
Zhang Zhi Gong
Cardiothoracic Surgery
About me
Zhang Zhigong, male, associate chief physician, with a postgraduate degree. He is the vice chairman of the Youth Academic Committee of Hunan Provincial People's Hospital and the secretary of the Thoracic Surgery Department. He has been engaged in thoracic surgery for over ten years and has visited Shanghai Pulmonary Hospital, Chest Hospital, and Henan Zhengzhou First Hospital for learning. In 2015, he was selected by the hospital to study abroad at the teaching hospital of University of Göttingen, Germany.
Proficient in diseases
Proficient in minimally invasive single-port thoracoscopy, lung bullae, pneumothorax, advanced lung cancer, thermal ablation, radioactive seed implantation, minimally invasive NUSS funnel chest surgery, and other minimally invasive surgeries. Also, was the first in the world to apply 3D printing to the treatment of rib fractures in cardiothoracic surgery. Has extensive clinical experience in congenital and acquired heart diseases.
Voices
Can funnel chest heal itself?
Actually, a portion of children with pectus excavatum can heal on their own, especially those who are newly born and discovered to have pectus excavatum. This is because children are curled up while in the mother's womb. In some cases, their hands and feet might be placed in front of the sternum, pressing it backward and inward, causing a deformity. However, once the mother gives birth and the child's limbs unfold, the pressure on the sternum is relieved. As the chest grows, it gradually returns to its normal shape, and these children with pectus excavatum can be cured. On the other hand, another group of patients do not have pectus excavatum at birth, but develop a noticeable chest indentation as they grow older. These patients, when they are young, can also be treated with conservative methods, such as using a vacuum bell for pectus excavatum to gradually draw the indentation outward. With its stabilizing effect, as the child grows, the deformity can be slowly corrected. Of course, there are also children who might have a more rapid skeletal development, and essentially become "set" in their ways. At this stage, they may require surgical intervention to treat the condition. In summary, a portion of pectus excavatum patients can be healed, while another portion requires active intervention and treatment.
Does pectus excavatum hurt?
The sternum of pectus excavatum caves inward and backward, directly compressing the patient's heart or lungs, causing a certain degree of chest pain. This chest pain is not caused by pectus excavatum itself, but by the compression of the heart or lungs due to pectus excavatum. Imagine a normal ribcage as an oval shape; its cross-section is also oval and is a ratio of the patient's left-right diameter, transverse diameter, and anterior-posterior diameter. In normal individuals, this ratio is less than 2.5. In pectus excavatum, since the anterior-posterior diameter is significantly reduced and the sternum is markedly pressed towards the spine, the patient's heart is entirely compressed and deformed. Therefore, the patient's coronary arteries or valves may be squeezed and deformed, resulting in about 60% of pectus excavatum patients experiencing chest pain.
Pneumothorax CT manifestations
Pneumothorax CT manifestations, we know that there is a potential gap between the lungs and the chest wall in normal individuals, but normally, this gap or cavity is under negative pressure. This negative pressure ensures that the lungs are pressed tightly against the chest wall and the pleura, also containing a certain amount of lubricating fluid which allows for movement during inhalation without excessive friction causing pain. However, if due to some reason, such as a burst large or small pulmonary bullae, air enters this potential cavity or the pleural space, it is referred to as pneumothorax. Moreover, on a CT scan, it is distinctly visible that part of the chest cavity shows an area devoid of air-containing lung structures, indicating the absence of normal lung in this region. Normally on CT, a healthy lung appears like a sponge, so this phenomenon reveals sponge-like tissue, referred to as lung texture. But when air enters, the pressure from the air can compress the lung, causing it to collapse, similar to a deflating balloon. In addition, part of the CT imaging presents as dark areas around the periphery where lung textures are absent or cavities appear, referred to as pneumothorax.
Pneumothorax recurrence symptoms
We know that normally there is no air in the pleural cavity, only a small amount of fluid or lubricant exists. However, in certain people, such as those who often smoke, tall and thin young people, and patients with chronic bronchitis, the alveoli in their lungs tend to be more fragile and can easily rupture. People experiencing a pneumothorax for the first time might feel this during certain situations like after a cold, coughing, sneezing, or playing sports, which can lead to a recurrence of the pneumothorax. Early symptoms of a recurrence, due to only a small amount of air compression, might not be very uncomfortable, just a slight sense of difficulty breathing. As the pneumothorax increases, symptoms like chest pain and difficulty breathing can develop. Therefore, the symptoms of a recurring pneumothorax are not identical each time, but there is a pattern; the severity can range from mild breathing difficulty to severe respiratory distress and chest pain.
How to check for hemothorax and pneumothorax?
Actually, the examination methods for hemothorax and pneumothorax are quite simple. From their definitions, we know that hemothorax means the abnormal presence of blood in the pleural cavity, and pneumothorax means the presence of gas in the pleural cavity where it shouldn't be. Therefore, the simplest examination is an X-ray, a standard frontal and lateral chest X-ray, which usually costs about 52 yuan, can detect whether a patient has pneumothorax. As for hemothorax, of course, it involves the use of a syringe. After injecting some lidocaine local anesthesia into the patient, if blood is withdrawn from the pleural cavity, then it indicates a hemothorax. Thus, the first step in examining for hemothorax and pneumothorax is to perform an X-ray to check for the presence of gas. If gas is detected, then it is pneumothorax. If liquid is found, a syringe under ultrasound guidance can be used to withdraw it. If the withdrawal yields fluid, it indicates pleural effusion; if blood is drawn, then it indicates hemothorax.
Postoperative care for pectus excavatum
Pectus excavatum surgery involves implanting a metal plate in the patient's body; however, this type of metal plate cannot be welded to normal bones or muscles. It is only fixable using stainless steel wires or sutures. Therefore, postoperative care is crucial. Good post-surgical care significantly reduces the chances of the metal plate shifting. We recommend that patients lie flat on their backs for 3 to 5 days after the surgery, avoid bending, twisting their bodies, or rolling over in bed for a week. For a month, it's important for patients to keep their bodies straight and stand flush against a wall. Since the chest will be quite painful after the surgery, standing against a wall helps the patient maintain a proper posture. Otherwise, due to the pain, the patient may stoop forward, resulting in a hunched posture, which is unappealing and not good for the spine. Within two months post-surgery, the patient should avoid bending over to lift heavy objects as this can lead to uneven distribution of force that may cause the metal plate to shift. Intense physical activities should be avoided for three months. The patient should ideally rest in a supine position and avoid external injuries and contact or impact sports like basketball, soccer, or football. Generally, the metal plate should be removed 2 to 3 years after the surgery depending on the circumstances, so regular clinic visits are necessary to monitor the situation of the plate. If the patient experiences difficulty breathing or chest pain after being discharged from the hospital, they should immediately go to the nearest hospital to have their chest x-rayed to check the status of the metal plate.
Can pneumothorax be inherited?
In fact, medicine has found that most diseases, other than traumatic ones caused by injuries or car accidents, are related to genes or heredity. For instance, diseases like diabetes and hypertension clearly have a familial hereditary history. Pneumothorax is no exception, as it also tends to cluster in certain families, or has a higher tendency than in normal families. Therefore, pneumothorax does possess a certain hereditary nature, particularly in families prone to connective tissue disorders such as Marfan Syndrome. Additionally, pneumothorax often occurs in families with mutations in the human leukocyte antigen, and in those with conditions such as homocystinuria or antitrypsin deficiency, where pneumothorax is more prevalent. Of course, there are also conditions like Marfan Syndrome and Birt-Hogg-Dube (BHD) Syndrome in these families, which also tend to develop renal cysts, renal tumors, and skin fibrofolliculomas. Thus, the more frequent occurrence of pneumothorax in these families demonstrates that pneumothorax is genetically related and has a certain degree of heredity.
How to treat recurrent pneumothorax for the second time?
Patients with recurrent pneumothorax, we recommend proactive minimally invasive surgical intervention. For patients experiencing their first recurrence of pneumothorax, the likelihood of a second recurrence is about 20-30%. For those who have had two episodes of pneumothorax, it indicates the presence of a small rupture on the lung, or an area that has not healed well, or is particularly weak. Thus, for patients who have had two episodes or a second occurrence of pneumothorax, if they do not receive active treatment, the probability of a third recurrence rises to about 70-80%. Whether using minimally invasive surgery or the conservative method of simple tube insertion, both are certainly burdensome for the patient. However, for patients with a second occurrence of pneumothorax, undergoing a small minimally invasive surgery, which involves a small incision of one to two centimeters under the armpit to treat the pneumothorax, dramatically reduces the likelihood of subsequent occurrences from the previous 70-80% to below 10%. Therefore, the best treatment for a second pneumothorax episode is through minimally invasive surgical intervention.
The difference between tension pneumothorax and open pneumothorax.
The main difference between a tension pneumothorax and an open pneumothorax lies in the relative pressures of the pleural cavity compared to the atmospheric pressure. An open pneumothorax occurs when the pleural cavity is in an open state due to some reason. During inhalation, gas can enter the pleural cavity, and during exhalation, the gas can be expelled through this opening or another opening, resulting in pleural cavity pressure that is roughly equal to the atmospheric pressure. In a tension pneumothorax, due to some reason, a one-way valve is formed. The gas enters the pleural cavity easily but encounters resistance during expulsion, causing the pressure in the patient's pleural cavity to increase progressively. The gas can only enter the pleural cavity and cannot be effectively expelled. Therefore, the main difference between a tension pneumothorax and an open pneumothorax is the level of pleural cavity pressure compared to atmospheric pressure; in a tension pneumothorax, the pressure in the pleural cavity is significantly higher than the atmospheric pressure, while in an open pneumothorax, the pressures are roughly equal.
Pectus excavatum should see which department?
If the patient is relatively young, under 14 years old, and wishes to consult about pectus excavatum care, pediatric healthcare can be considered. However, if the patient is older, or in addition to pediatric healthcare advice, seeks information on how to treat pectus excavatum, it is advisable to consult with a local thoracic surgery department, if available. This is because thoracic surgeons offer not only information on the causes or care of pectus excavatum but also treatment options. Both conservative treatment plans and surgical interventions are available from thoracic surgeons. Of course, not all hospitals have a department of thoracic surgery, but general top-tier hospitals typically do; if there is no thoracic surgery available locally, considering general surgery might be the only alternative.