Pneumocephalus with headache complicating labour epidural analgesia: should we still be using air?

Unusual Presentation of Pneumocephalus With Late Onset During Labour Epidural Analgesia

A 36-year-old woman with no significant medical history was in active labour and requested labour analgesia. While the epidural technique was performed at the L4-L5 interspace, using the loss of resistance to air technique (LORA), inadvertent dural puncture occurred. Since the patient reported no headache or discomfort, the same procedure was repeated at the L3-L4 interspace successfully. Loss of resistance was reported at 3 cm and the epidural catheter was advanced uneventfully at 8 cm. Aspiration was negative for blood or cerebrospinal fluid (CSF) and a test dose of 2 ml lidocaine 2% was administered epidurally. Within five minutes the patient exhibited a mild hypotensive episode successfully treated with 2.5 mg ephedrine IV, a sensory blockade up to T6 level, and a motor blockade up to T10 level. Both the woman's and the baby's vital signs remained stable, no further drugs were administered epidurally and labour progressed painlessly and uncomplicated for 90 minutes with subsequent vaginal delivery of a healthy newborn. During the episiotomy incision repair, the patient complained of light dizziness and nausea. Her vital signs and the arterial blood gases (ABGs) ordered were within normal range, but the neurological examination revealed an isolated Babinski on the right foot. The head CT scan requested indicated a considerable quantity of air within the subarachnoid region. The patient was treated conservatively; symptoms showed steady improvement with total resolution on the sixth day, and the woman was discharged. This case reemphasizes the possibility of pneumocephalus, which may, in reality, occur more frequently than is commonly recognized without a CT confirmation.

Extensive tension pneumocephalus presented in the setting of a challenging etiology

Background

Pneumocephalus (PNC) is a well-described consequence in postoperative settings and skull fractures that is usually self-limiting. It can get complicated into tension PNC on some rare occasions, leading to an intracranial mass effect. PNC was also reported after unintentional dural puncture throughout the epidural anesthesia process. However, tension PNC resulting from epidural anesthesia procedures is an extremely rare outcome that implies urgent intervention to relieve the tension within the brain. Here, we report a case of an extensive tension intraventricular PNC 2 days following an epidural anesthesia procedure for a femur fixation surgery.

Case Description

A 23-year-old male presented to the emergency department with basal skull fractures and a femur fracture due to a motorcycle accident. His skull base fracture was managed conservatively then he underwent a femur fixation procedure under epidural anesthesia. Two days after, he developed a severe headache with a disturbed level of consciousness. Computed tomography of the brain revealed an extensive PNC that involved all the subarachnoid spaces down to the cervical region and compressing the cerebellum, which was not found in the initial imaging. The patient's status improved after the twist-drill burr-hole evacuation of air under the water seal.

Conclusion

Extensive tension PNC can occur after traumatic brain injury, especially after epidural anesthesia. Such cases should gain high focus because they may differ from simple PNC regarding diagnosis, treatment, and follow-up.

Pneumocephalus in thoracoabdominal aortic aneurysm repair after lumbar drain removal and blood patch

Lumbar spinal drain use during thoracic and thoracoabdominal aortic aneurysm repair has reduced the incidence of ischemic spinal cord injury with relatively low risk. We report a case of pneumocephalus in a 55-year-old woman who had undergone open repair of a 6.7-cm type IV thoracoabdominal aortic aneurysm. After lumbar spinal drain removal, she developed a postdural headache, which was subsequently treated with blood patch placement. After discharge, she had presented with transient headaches, perioral numbness, and left-hand weakness. Computed tomography revealed intraventricular gas within the lateral ventricles. Pneumocephalus is an exceedingly rare and potentially dangerous complication of lumbar spinal drains and blood patch placement.

Pneumocephalus and Chemical Meningitis after Inadvertent Dural Puncture during Lumbar Epidural Injection

Inadvertent dural puncture (IDP) is one of the complications of lumbar epidural steroid injections (ESIs). We report a case in which pneumocephalus and chemical meningitis developed at the same time after an IDP during a lumbar interlaminar ESI. A 60-year-old woman presented to the emergency room with thunderclap headache and febrile sensation 3 hours after receiving a lumbar interlaminar ESI. Brain computed tomography (CT) scan showed multiple small foci of air within the subarachnoid space and ventricle. After the admission, the patient was afebrile and reported mild improvement of headache with analgesics. However, 2 days after the admission, headache worsened and fever recurred. Follow-up brain CT scan revealed resolution of the pneumocephalus. A diagnostic lumbar puncture for cerebrospinal fluid (CSF) examination revealed the findings suggestive of aseptic (chemical) meningitis rather than bacterial meningitis. With symptomatic treatment, headache improved and there was no fever after 48 hours. No bacteria, Mycobacterium, or fungi grew in the CSF for 7 days. This case shows an IDP during a lumbar ESI can cause pneumocephalus and chemical meningitis at the same time and efforts should be made to reduce the risk of IDP during lumbar ESIs.

Symptomatic Pneumocephalus as a Complication of Lumbar Epidural Anaesthesia

Introduction

Lumbar epidural anaesthesia is a commonly used technique for analgesia during labour. One of the rare complications of this technique is pneumocephalus.

Case description

We report the case of a 35-year-old female admitted to the Emergency Department with severe headache associated with fast head movements. Five days previously she had a eutocic delivery and lumbar epidural anaesthesia was performed. A brain computed tomography (CT) scan showed pneumocephalus and she was admitted to the hospital ward. A brain CT scan on the fourth day of hospitalization showed resolution of ventricular pneumocephalus.

Discussion

The most frequently occurring symptom with pneumocephalus is headache associated with fast brain motion resulting from air injection and meningeal irritation. When there is clinical suspicion of pneumocephalus, a brain CT scan should be performed for the diagnosis.

LEARNING POINTS

Pneumocephalus is the presence of air in the intracranial cavity and its development after spinal or epidural anaesthesia is extremely infrequent.Headache that occurs in the setting of lumbar epidural anaesthesia should not be labelled as post-dural puncture headache.The suspicion of pneumocephalus, based on the characteristics of the headache, should be maintained to obtain an emergent brain CT scan.

Cardiac arrest associated with pneumorrhachis and pneumocephalus after epidural analgesia: two case reports

Background

Epidural analgesia has become a common procedure to provide excellent pain relief with few complications. Pneumorrhachis and pneumocephalus are rare complications of unintentional dural puncture and injection of air into the subarachnoid or subdural space. No cases of cardiac arrest associated with these complications have been reported in the literature previously.

Case presentation

We report cases of pneumorrhachis and pneumocephalus in two Korean women who previously visited a local pain clinic and underwent epidural analgesia. Thereafter, they were admitted to the emergency department with cardiac arrest. Cardiopulmonary resuscitation was performed on these patients, and return of spontaneous circulation was achieved. The brain and spine computed tomographic scans showed pneumorrhachis and pneumocephalus, respectively. These cases demonstrate that pneumorrhachis and pneumocephalus may occur after epidural analgesia, which may be associated with cardiac arrest in patients.

Conclusions

If cardiac arrest occurs after epidural analgesia, pneumocephalus and pneumorrhachis should be considered as its cause. Although epidural analgesia is a common procedure, caution is warranted during this procedure.

Pneumocephalus associated with epidural and spinal anesthesia for labor

Headache resulting from dural puncture in epidural and spinal anesthesia is usually secondary to a CSF leak. Pneumocephalus may also occur in this setting but has not been well-characterized. Although the risk factors for a CSF leak and pneumocephalus may overlap, their rates, clinical features, and treatments may be different. Our retrospective review of 182 patients with acute headache in the antepartum, peripartum, and postpartum settings yielded a 5:1 ratio of postdural puncture headache to pneumocephalus. The 3 patients with pneumocephalus had the defining characteristic of thunderclap headache during anesthesia. Early diagnosis is helpful as treatment with supplemental oxygen may hasten recovery. Pneumocephalus should be considered as a possible etiology of thunderclap headache in the setting of epidural and spinal anesthesia.

Case Report: Pneumocephalus after labor epidural anesthesia

Lumbar epidural anesthesia is commonly used for labor analgesia. The 'loss-of- resistance' to air technique (LORA) is generally employed for recognition of the epidural space. One of the rare complications of this technique is pneumocephalus (PC). Here we describe the case of a parturient who developed a frontal headache when locating the epidural space using LORA. On the second day after epidural injection, the patient exhibited occipital headaches with gradual worsening. Computed tomography scans of the brain indicated PC. Following symptomatic treatment, our patient was discharged on the 13th day. We concluded that the amount of air used to identify the epidural space in LORA should be minimized, LORA should not be used after dural puncture and the use of saline avoids PC complications.

Pneumocephalus in a patient with no cerebrospinal fluid leakage after lumbar epidural block - a case report -

Several complications are possible after a lumbar epidural block. However pneumocephalus are rare. In this case, we report a case of pneumocephalus. A 68-year-old male patient received lumbar epidural block with the loss of resistance technique using air, and after 35 minutes, apnea, unconsciousness, hypotension, and bradycardia occurred. Immediately, brain CT was done, and we found pneumocephalus. The patient complained of severe occipital headache and itchiness due to pneumocehalus. After conservative treatment, the patient recovered without neurologic complications, and on the seventh day of his hospitalization, he was discharged from the hospital.